CN115358051A - Method for verifying candidate items of recommendation of main minimum equipment list of aviation product - Google Patents

Abstract

The invention provides a candidate item verification method for an aviation product main minimum equipment list recommendation, which comprises the following steps: the method comprises the steps of establishing a verification scheme and a verification plan, establishing verification specifications and requirements, establishing a verification object list, establishing a verification team and required resource guarantees, establishing a verification task book and a verification outline, executing verification, recording in the verification process, evaluating verification results, establishing a verification report for the verification task, and recording verification data. The technical scheme of the embodiment of the invention integrates the details of the verification program, defines the selection principle of the verification object, standardizes the classification and selection principles of the verification method, provides the judgment standard of the verification result, standardizes the compilation method of the verification record sheet, improves the feasibility and the integrity of PMMEL verification, ensures the scientific and efficient promotion of the verification work, solves the problem of temporary canonicalization program in the technical field of PMMEL candidate project verification, breaks through the technical blank of the field, and improves the safety and economic technical grade of the aviation industry.

Description

Method for verifying candidate items of recommendation of main minimum equipment list of aviation product

Technical Field

The invention relates to the technical field of verification of reliability and safety of aviation products, in particular to a method for verifying candidate items of a recommendation of a main minimum equipment list of the aviation products.

Background

The Main Minimum Equipment List (MMEL) is a list of items determined by the China civil aviation administration that may not work under certain operating conditions, but the aircraft still maintains an acceptable level of safety and performs the corresponding tasks. The Main minimum equipment List recommendation (PMMEL) is a draft of the Main minimum Equipment List drafted by the manufacturer, and is submitted to the flight operations review Board (FOEB) of the China civil aviation administration aircraft review group (AEG) as the basis for making the Main minimum Equipment List. To verify the fact that certain items of equipment in PMMEL are operating in an inoperative state, manufacturers provide the necessary forms of verification including simulation, ground-on-board testing, etc. By setting the airplane system, the system and equipment faults are simulated, the safety level of the airplane can be kept when certain systems and equipment do not work, and the workload of a crew member is not increased excessively.

At present, the master minimum equipment list of the aviation product can be obtained only through an open information channel, but the master minimum equipment list obtained through what verification method and verification process is difficult to know. The civil aviation authority AEG requires that all candidate items of PMMEL be validated, and validation work is also a necessary process to ultimately determine whether a PMMEL item affects the safety level of the aircraft. Related technical patents of the main minimum equipment list candidate item analysis method are disclosed in China at present, but domestic civil aviation product manufacturers do not have an operation method or principle which is general in the industry in the aspect of verification of the main minimum equipment list proposal candidate item. And (4) each aviation product manufacturer self-draws up a verification method for the candidate project of the proposal of the main minimum equipment list by referring to publicly released data and past experience.

Disclosure of Invention

The purpose of the invention is as follows: in order to safely operate an aircraft and improve economy and market competitiveness, the embodiment of the invention provides a method for verifying candidate items of a main minimum equipment list recommendation of an aviation product, so as to solve the problem that no related verification mode exists for the candidate items in the main minimum equipment list recommendation and break through the technical blank in the field.

The technical scheme of the invention is as follows: the embodiment of the invention provides a candidate item verification method for an aviation product main minimum equipment list recommendation, which comprises the following steps: aiming at a main minimum equipment list recommendation (PMMEL), realizing the verification of each candidate item in the PMMEL through each operation respectively executed in a verification planning stage, a verification preparation stage, a verification implementation stage and a verification summary stage; the method specifically comprises the following steps:

step 1, the operations executed in the verification planning stage include: establishing and releasing a verification scheme and a verification plan of PMMEL, establishing a verification specification and a verification requirement, compiling a verification object list and establishing a verification team;

step 2, the operation executed in the verification preparation stage includes: verifying resource guarantee preparation, and compiling a verification task book and a verification outline;

step 3, the operation executed in the verification implementation stage includes: verifying the verification objects of the PMMEL to obtain the evaluation verification result of each verification object, and judging whether to verify again;

step 4, the operations executed in the verification summary stage include: and compiling a verification report based on the verification result, and filing the verification data record so as to form a support material for compliance verification.

Optionally, in the method for verifying candidate items in the aviation products main minimum equipment list proposal as described above,

the step 1 of formulating and issuing a PMMEL verification scheme and verification plan includes: and according to the compiled PMMEL, combining the model trial flight plan, making a PMMEL verification scheme and a verification plan, and determining the verification mode, the verification opportunity, the verification unit, the verification personnel and the verification location of each candidate item in the PMMEL.

Optionally, in the method for verifying candidate items in the aviation products main minimum equipment list proposal as described above,

the step 1 of formulating the verification specification and the verification requirement comprises the following steps: writing a verification specification of each candidate item in the PMMEL, wherein the content of the verification specification at least comprises: verification purposes, verification conditions, airplane configurations, system state setting, test procedures (including preparation work, verification implementation and normal recovery), test and record requirements and acceptable criteria;

the plurality of validation requirements in the validation specification comprises: verifying aircraft requirements, verifying personnel requirements, and verifying record requirements.

Optionally, in the method for verifying candidate items in the aviation products main minimum equipment list proposal as described above,

the step 1 of compiling the verification object list comprises the following steps: compiling a verification object list of the PMMEL by analyzing the respective characteristics of each candidate item in the PMMEL so as to clearly show the content of the required verification in each candidate item in the PMMEL; the items to be verified in the verification object list are part or all of candidate items selected from the candidate items of the PMMEL;

the step 1 of establishing a verification team group includes: and forming a verification team according to the verification specification, the verification requirement and the verification object list, and clearly verifying the work content and the responsibility of the verification team.

Optionally, in the method for verifying candidate items in the aviation products main minimum equipment list proposal as described above,

the preparation of the verification resource guarantee of step 2 specifies the condition requirements of the verification resource guarantee, and the condition requirements include: verifying the requirements of implementing personnel, facilities and time;

wherein, the requirement of the verification implementer specifies the requirements of the implementer for respectively performing written verification, simulator test verification, flight test verification and ground test verification;

the verification facility requirements are: the verification device configuration used for verifying the item to be verified in the PMMEL is consistent with the configuration specified by the verification requirement;

the verification opportunity requirement is as follows: according to the candidate project verification requirements and scheduling suggested by the PMMEL, sufficient time is reserved in the model development stage for carrying out verification work.

Alternatively, in the method for verifying candidate items in the recommendation of the aircraft owner minimum device list as described above,

the step 2 of compiling the verification task book comprises the following steps: according to the verification mode of a verification object, the verification task book can be divided into a simulator verification task book, a ground test verification task book and a flight test verification task book; the verification task book at least comprises: verifying purposes, supporting conditions, contents, qualified criteria, verification completion forms, personnel division and requirements;

the step 2 of compiling the verification outline comprises the following steps: determining verification working details through a verification schema, and completing special safety evaluation of a PMMEL verification object and support in the aspect of verification safety; the verification schema at least comprises the following contents: verifying an object, verifying a subject list, verifying requirements and verifying task arrangement; the verification task schedule includes at least: verification purpose, verification method, acceptable criterion, verification result record, weather requirement, setting up and risk analysis.

Optionally, in the method for verifying candidate items in the aviation products main minimum equipment list proposal as described above,

the process of implementing verification in step 3 includes:

and (3) implementing PMMEL verification on the simulation training equipment or the airplane according to the verification outline compiled in the step (2), recording the verification process in the verification implementation process, and judging to implement verification again or perform verification summary through evaluating the verification result.

Alternatively, in the method for verifying candidate items in the recommendation of the aircraft owner minimum device list as described above,

the PMMEL verification method in step 3 includes: written verification, simulation machine test verification and on-machine test verification; alternatively, the first and second electrodes may be,

the PMMEL verification method in step 3 includes: written verification and operation verification; wherein the operation verification comprises: a simulation machine test, a ground test and a flight test;

the content of the written verification comprises at least: the method comprises the steps of verifying system main function elaboration accuracy, verifying system composition description accuracy, verifying component position information accuracy, verifying system schematic diagram accuracy, verifying control indication description accuracy, verifying system interface description accuracy, verifying whether terms are accurate and consistent, verifying fault description accuracy, verifying fault influence description accuracy, verifying route concurrent fault influence description accuracy, verifying (M) program description accuracy, verifying (O) program description accuracy and verifying limitation information description accuracy;

the content of the operation verification at least comprises: verifying fault influence analysis, verifying (M) program operability, verifying (O) program operability and evaluating unit workload;

the PMMEL verification mode selection principle in the step 3 includes: the method comprises the steps of fault influence analysis and verification mode selection, maintenance (M) program verification mode selection, operation (O) program verification mode selection and unit workload verification mode selection.

Optionally, in the method for verifying candidate items in the aviation products main minimum equipment list proposal as described above,

in step 3, evaluating the criteria of the verification result includes: design related information verification standard, fault influence verification standard, (M) program verification standard, (O) program verification standard, pilot load evaluation verification standard, and verification conclusion judgment standard.

Optionally, in the method for verifying candidate items in the recommendation of the aircraft product main minimum equipment list as described above, the step 4 includes:

step 41, compiling a verification report, and archiving a verification data record; wherein the verification report includes at least: the verification method comprises the steps of verifying general profiles, verifying contents, verifying modes, verifying data processing modes and results, verifying personnel evaluation and verifying conclusions;

and step 42, summarizing the problems found by verification in time according to the verification report of each verification object in the PMMEL to complete a verification analysis report.

The invention has the beneficial effects that: the embodiment of the invention provides a candidate project verification method for an aviation product main minimum equipment list proposal, which is based on a PMMEL verification logic diagram, advances a verification program, namely, a verification scheme and a verification plan are formulated, a verification specification and requirements are formulated, a verification object list is formulated, a verification team and required resource guarantees are formulated, a verification task book and a verification outline are formulated, verification is executed and recording is carried out in the verification process, the verification result is evaluated, a verification report is formulated for the verification task, and verification data are recorded. The candidate project verification method of the PMMEL is suitable for requirements, methods, flows, guarantee conditions, judgment standards and record reports of verification of a main and lowest equipment list recommendation of an airplane, and provides a basis for flight mission guarantee.

According to the technical scheme provided by the embodiment of the invention, the verification program details are integrated through the PMMEL verification logic diagram, the verification object selection principle is determined, the classification and selection principles of the verification method are standardized, the verification result judgment standard is provided, the verification record compiling method is standardized, the feasibility and the integrity of PMMEL verification are positively improved, the scientific and efficient promotion of verification work is ensured, the safety of flight products of aviation manufacturers is improved, the economy of airplanes is greatly ensured by improving the attendance rate, and the healthy and rapid development of the aviation industry is promoted.

Drawings

The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and are not intended to limit the invention.

FIG. 1 is a logic diagram illustrating a method for verifying candidate items in an aviation product main minimum equipment list recommendation according to an embodiment of the present invention;

fig. 2 is a schematic flow chart illustrating a specific process of performing validation in the method for validating candidate items of an aviation product main minimum equipment list recommendation according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

As described in the background art, currently, the main minimum equipment list of the aviation product can only be obtained through the public information channel, but it is difficult to know what verification method and verification process the main minimum equipment list is obtained. It is known that in the process of checking the main minimum equipment list recommendation (PMMEL), in order to obtain the required evidentiary data to indicate the compliance of the relevant rule terms, manufacturers usually need to perform verification checking on the PMMEL in different verification ways, and these methods are collectively called compliance verification methods (compliance methods for short). In order to examine the knowledge of both parties uniformly and facilitate information exchange, the conformity methods are summarized into ten kinds on the basis of collating the previous examination experience and referring to the foreign management results. In the examination, one or more combinations of the terms are selected according to the specific requirements of the terms to carry out compliance verification so as to meet the requirements of the terms.

The current model qualification and conformity verification modes are MOC0 (conformity statement), MOC1 (explanatory document), MOC2 (analysis/calculation), MOC3 (safety assessment), MOC4 (laboratory test), MOC5 (ground test), MOC6 (flight test), MOC7 (aircraft inspection), MOC8 (simulator test) and MOC9 (equipment qualification), respectively. In the process of conducting PMMEL review, a compliance method in airworthiness review can be used for reference, and according to the PMMEL review characteristics, one or more combinations of the methods can be selected according to the specific requirements of the regulation clauses to verify whether the review submission files of the relevant review units meet the requirements of the regulation. In order to verify the correctness of the contents of the evaluation documents of the PMMEL submitting relevant evaluation units, manufacturers need to make a corresponding compliance verification method according to compliance requirements of the evaluation submission documents, so as to verify the documents submitted to the evaluation of the relevant evaluation units, and arrange a final verification report and a verification work order generated in the verification process as a supporting material for the PMMEL bureau evaluation.

In order to safely operate an aircraft, improve the economy and market competitiveness, solve the problem that no relevant verification mode exists for candidate items in the main minimum equipment list recommendation, break through the technical blank in the field and break through relevant technical difficulties of foreign technical blockade, the embodiment of the invention provides a method for verifying the candidate items in the main minimum equipment list recommendation of an aviation product.

The present invention provides that several embodiments may be combined, and that the same or similar concepts or processes may not be described in detail in connection with certain embodiments.

The method for verifying the candidate items of the recommendation of the main minimum equipment list of the aviation product is used for verifying whether equipment which has certain influence on the safety and the task of an airplane can be continuously released and ensuring the safe flight to execute the task under the condition of fault. The method mainly comprises the following steps: aiming at the PMMEL, the verification of each candidate item in the PMMEL is realized through each operation respectively executed in a verification planning stage, a verification preparation stage, a verification implementation stage and a verification summarization stage. The following steps are respectively executed in the four stages:

step 1, the operations executed in the verification planning stage include: establishing and releasing a verification scheme and a verification plan of PMMEL, establishing a verification specification and a verification requirement, compiling a verification object list and establishing a verification team;

step 2, the operation executed in the verification preparation stage includes: verifying resource guarantee preparation, compiling a verification task book and a verification outline;

step 3, the operation executed in the verification implementation stage includes: verifying the verification objects of the PMMEL to obtain the evaluation verification result of each verification object, and judging whether to verify again;

step 4, the operations executed in the verification summary stage include: and compiling a verification report based on the verification result, and filing the verification data record so as to form a support material for compliance verification.

The candidate project verification method for the recommendation of the main minimum equipment list of the aviation product, provided by the embodiment of the invention, is based on a PMMEL verification logic diagram, and is used for advancing a verification program, namely, making a verification scheme and a verification plan, making verification specifications and requirements, making a verification object list, establishing a verification team and required resource guarantees, making a verification task book and a verification outline, executing verification, recording in the verification process, evaluating a verification result, making a verification report for the verification task, and recording verification data. The candidate project verification method of the PMMEL is suitable for requirements, methods, flows, guarantee conditions, judgment standards and record reports of verification of the main and lowest equipment lists of the airplane, and provides a basis for flight mission guarantee.

According to the technical scheme provided by the embodiment of the invention, the verification program details are integrated through the PMMEL verification logic diagram, the verification object selection principle is defined, the classification and selection principle of the verification method is standardized, the verification result judgment standard is provided, the verification record compiling method is standardized, the feasibility and the integrity of PMMEL verification are positively improved, the scientific and efficient promotion of verification work is ensured, the safety of flight products of aviation manufacturers is improved, the economy of airplanes is greatly ensured by promoting the attendance rate, and the healthy and rapid development of the aviation industry is promoted.

The following is a schematic illustration of a specific implementation process of the method for verifying candidate items in the recommendation of the main minimum equipment list of the aviation product according to the present invention by using a specific embodiment.

As shown in fig. 1, a logic diagram for verifying candidate items of an aviation product main minimum equipment list recommendation provided by an embodiment of the present invention is shown. The specific implementation steps comprise: the four phases of verification planning 1, verification preparation 2, verification implementation 3 and verification summary 4 are executed in sequence.

Wherein the verification plan 1 comprises: a verification scheme and plan 5 is formulated and issued, which means that a verification worker formulates a PMMEL verification scheme and plan; formulating verification specifications and requirements 6, namely verifying the verification requirements of compiling the PMMEL project by a person in charge of the verification work; compiling a verification object list 7, namely compiling a PMMEL verification object list by a verification work responsible person; and (4) establishing a verification team 8, namely, organizing related technicians to form the verification team by a verification work responsible person. The verification preparation 2 includes: resource guarantee preparation 9, which is to provide guarantee preparation work of related equipment technology and personnel for verification work; compiling a verification task book 10 refers to compiling a verification task book by a verification team; compiling a verification outline 11 refers to compiling the verification outline by a verification team and determining the details of verification work. The verification implementation 3 includes: performing verification 12, namely performing PMMEL verification on simulation training equipment or an airplane according to a verification outline, and making verification process records; evaluating the verification result 13 and whether to verify 14 again refers to evaluating the verification effect by a verification team and judging whether to verify again; verification summary 4 includes: compiling a verification report 15, namely compiling a verification summary report after a verification team analyzes the verification record; and 6, verification data record archiving, namely recording and archiving the verification data by a verification team, and modifying and finishing data input for the PMMEL file.

The following is a detailed description of the operation contents respectively executed in the above four stages in the method for verifying the candidate item of the recommendation of the main minimum equipment list of the aviation product according to the embodiment of the present invention.

1 verification planning

1.1 formulating and issuing PMMEL verification schemes and verification plans

In the stage, according to the compiling situation of the PMMEL, relevant regulation requirements of bureaus are followed, a model trial flight plan is combined, a PMMEL verification scheme and a verification plan are formulated, and the verification mode, the verification opportunity, the verification unit, the verification personnel, the verification location and the like of each candidate item in the PMMEL are determined.

It should be noted that the verification scheme and plan formulated in this step need to complete company-level internal review, and the review board should be composed of members of the research and development team, members of the trial flight team, members of the airworthiness team, and members of the customer service team.

1.2 formulating authentication Specifications and authentication requirements

In the stage, a verification specification of each candidate item in the PMMEL is compiled, the verification specification comprises each verification requirement, and the purpose of formulating the verification specification and the requirement is as follows: the verification purpose, the verification condition, the aircraft configuration, the system state setting, the test program (preparation work, verification implementation and normal recovery), the test and record requirements, the acceptable criterion and the like of each candidate item in the PMMEL are specified in detail.

PMMEL validation requirements include:

a) Verifying aircraft requirements: in order to ensure the smooth operation of the verification work and the accuracy of the result, the configuration of the airplane is verified by using the verification requirements. Because PMMEL verification requires simulation of the airline operating environment, the aircraft used for verification should be consistent with the delivery configuration. If the verification requirements cannot be completely met, configuration difference evaluation is carried out, and the validity of verification is confirmed. The PMMEL verifying machine is required to be consistent with the delivery configuration at least in a system related to a verification candidate item, and other systems do not influence the verification. The evaluation comprises pattern configuration evaluation, hardware configuration evaluation and software configuration evaluation, the existing difference and the caused influence are analyzed, and whether the verification machine meets the PMMEL verification requirement or not is comprehensively judged.

b) The requirement of the verification personnel: the staff members include examiner personnel, personnel related to the authentication enforcement unit, personnel related to the manufacturer, and the like. The verification implementing personnel carry out the test according to the PMMEL verification outline; if the examiner has special requirements, the operation is carried out according to the requirements of the examiner, and the test result is recorded according to the relevant requirements.

c) Verification of the recording requirement: and recording key parameters of the airplane, the completion state of the verification task, problems and suggestions existing in verification, comprehensive comments of verification personnel and the like during verification according to the requirements of the verification outline. And judging the validity of the verification work by analyzing the recorded content.

The verification standard and the verification requirement compiled in the step need to complete company-level internal review, and the review board is composed of a research and development team member, a trial flight team member, a airworthiness team member and a customer service team member.

1.3 compiling verification object list

In the stage, a verification object list of the PMMEL is compiled, and contents needing to be verified in each candidate item in the PMMEL are clarified, such as verification of a maintenance (M) program and an operation (O) program, verification of pilot load and the like. This step of selecting an authentication object from the PMMEL candidates may be based on the following considerations:

a) May have a greater impact on flight safety;

b) The first application of a brand-new system or equipment;

c) Adding an operating procedure not contained in an Aircraft Flight Manual (AFM);

d) A specific maintenance procedure is added;

e) The unit workload may be increased significantly.

Through the analysis of the respective characteristics of each candidate item in the PMMEL, a suggested PMMEL verification item list initial draft is provided, and the verification object list is determined through coordination with related units.

The verification object list compiled in the step needs to be submitted to a relevant review unit to finish the review; in addition, each object item (namely, an item to be verified) in the compiled verification object list is selected from candidate items of the PMMEL.

1.4 build verification team

In the stage, related technical personnel are organized to form a verification team according to verification specifications, verification requirements and a verification object list, work content and responsibility of the verification team are determined, and necessary training is carried out on the verification team. Verification teams include, but are not limited to, development designers, airworthiness technicians, test flight technicians, customer service technicians, etc., with team members having to include pilots and maintenance engineers.

2 authentication preparation

2.1 verification of resource guarantee preparation

The condition requirements for verifying resource guarantee include the following:

a) Verifying enforcement personnel requirements

1) The written verification is responsible for a PMMEL analysis team, the item analysis to be verified is implemented by item analysts suggested in the PMMEL of the related system, and the security analysis is implemented by a security team;

2) The simulation machine test verification implementers provide corresponding support for technical pilots and flight engineers with corresponding qualifications, PMMEL analysis teams, training engineering teams (or simulation machine development teams) and system integration teams;

3) Flight test verification enforcers are test flight units and test flight engineers with corresponding qualifications;

4) Ground test verification is to select personnel with the qualification of operating the airplane to carry out verification according to the state of the test airplane and the verification requirements.

b) Verifying facility requirements

The verification facility comprises simulation equipment, a testing machine and other test equipment for verifying the item to be verified in the PMMEL, and the configuration of the verification facility is consistent with the configuration required by verification. If the configuration of the test equipment does not meet the corresponding requirement, but the actual configuration can realize the same function of the required configuration, the configuration can also meet the requirement of the test.

c) Validating timing requirements

According to the verification requirements and the schedule of the candidate project suggested by the PMMEL, the verification management group coordinates and ensures that sufficient time is left in the model development stage for carrying out verification work, and the verification requirements and the schedule comprise the following requirements:

1) The written verification is implemented according to the configuration state reached in the model development stage and the issued engineering documents;

2) The test flight verification plan is included in the test flight plan, and if the aircraft model development needs to be subjected to supplementary verification, the test flight verification plan is executed according to the model development plan;

3) The relevant evaluation unit provides verification requirements for the PMMEL proposal candidate items passing evaluation and can be combined with the functional reliability test flight in the functional reliability test flight stage;

4) The verification is ensured to be completely verified before the aircraft model qualification (TC) is proved as much as possible, and for the part of projects which are possibly subjected to TC supplementary examination after the TC, the verification is combined with the supplementary examination;

5) The flight test is mainly carried out in a mode of combining special verification and combined verification in the test flight process, wherein the combined verification refers to the verification carried out by combining the verification and normal tasks to be executed by the airplane research and development test flight, and the special verification refers to the verification carried out on verification objects by independently arranging resources and time.

2.2 compiling verification task book

The step of compiling the verification task book can be divided into a simulator verification task book, a ground test verification task book and a flight test verification task book according to the verification mode of a verification object. The verification task book at least comprises verification purposes, verification support conditions, verification content steps, verification qualified criteria, verification completion forms, personnel division, requirements and the like. The verification task book compiled in the step needs to be submitted to a relevant review unit to complete the review.

2.3 compiling verification schema

In the stage, according to the verification requirements, a verification implementation unit is coordinated, the details of verification work are determined, and the compiling of the verification outline is completed. The verification schema should at least include the following: verifying an object, verifying a subject list, verifying requirements and verifying task arrangement; wherein, each verification task schedule should include: verification purposes, verification methods, acceptable criteria, verification result records, meteorological requirements, setting up, risk analysis and the like.

And completing the special safety evaluation of the PMMEL verification object, providing safety support for the development of the PMMEL flight test verification object, and ensuring the safety of verification work.

And inviting the related review units, the verification implementation units and the manufacturer representatives to review the verification schema in the form of a conference and confirm that the verification schema meets the requirements of the related review units.

3 verification of implementation

3.1 Overall flow of validation

At this stage, PMMEL verification is implemented on simulation training equipment or an airplane according to the verification outline compiled in the steps, a verification process record is made in the verification implementation process, the verification result is evaluated, and whether the verification needs to be performed again is judged based on the verification result obtained by evaluation. Fig. 2 is a schematic diagram illustrating a specific flow of verification implemented in the method for verifying candidate items in the recommendation of the lowest equipment list of an airline product according to an embodiment of the present invention.

Fig. 2 shows a logic diagram of PMMEL verification implementation, which is divided into two parts of operation verification and written verification, wherein the operation verification part comprises: the operation verification preparation 1 is to clearly verify the purpose, select a test method, organize a verification staff group and determine a verification flight stage and verification content; the step 2 of verifying the fault influence analysis refers to verifying the fault influence analysis, and judging whether the fault influence analysis is accurate or not after the verification team completes corresponding operation; verifying (M) program operability 3 and verifying (O) program operability 4 refer to verifying (M) and (O) programs by a verification team, and judging whether the program description is accurate and operable after completing corresponding operations; and the unit workload evaluation 5 is to judge the increase condition of the operating program to the unit workload after the corresponding operation is finished by the crew members in the verification team. Wherein the written verification comprises: the verification system main function elaboration accuracy 6 refers to the verification team judging whether the main function part of the system can be accurately described; the verification system component description accuracy 7 is that a verification team judges whether the system component characters can be accurately described; verifying the accuracy 8 of the position information of the part refers to judging whether part of characters of the position information of the part can be accurately described by a verification team; verifying the accuracy 9 of the system schematic diagram refers to verifying whether the team judges part of the system schematic diagram information can clearly and accurately express the system principle; the verification control instruction description accuracy 10 refers to the verification team judging whether the system control instruction part of characters can be accurately described; the verification system interface description accuracy 11 refers to a verification team judging whether the system interface part characters can be accurately described; verifying whether the terms are accurate or not, wherein the step 12 of verifying whether the terms in the file are accurate or not and whether the full text is consistent or not is judged by a verification team; verifying the fault description accuracy 13 refers to verifying whether the team judges whether the characters of the fault description part can be accurately described; verifying the fault influence description accuracy 14 refers to verifying whether the team judges whether the text of the fault influence description part can be accurately described; verifying the accuracy 15 of the description of the concurrent route fault refers to verifying whether the team judges whether the text of the concurrent route fault can be accurately described; verifying the description accuracy 16 of the concurrent route fault influence refers to verifying whether the team judges whether the characters of the concurrent route fault influence part can be accurately described; verifying (M) program description accuracy 17 and verifying (O) program description accuracy 18 means that a verification team verifies the literal descriptions of the (M) program and the (O) program and judges whether the program descriptions are clear and accurate; the verification limit information description accuracy 19 refers to the verification team judging whether the limit information part characters can be accurately described; summarizing the verification conclusion 20 means that the verification team summarizes the verification process and judges that the verification is passed.

The verification work at the stage is combined with a verification mode, and a proper verification opportunity is selected and determined, such as flight test verification, and can be combined with model qualification approval test flight or function and reliability test flight development; in addition, the review board of the relevant review unit needs to be coordinated to confirm whether the witness needs to be verified.

3.2 authentication mode

According to different verification requirements and required conditions, PMMEL verification modes can be mainly divided into 3 types: written verification (main verification flow, analysis process, principle, integrity and the like), simulation machine test verification (main verification O program and unit load), onboard test verification (flight test verification and ground test verification, wherein the flight test verification mainly verifies the O program and the unit load, and the ground test verification mainly verifies the M program), and simulation verification can also be carried out according to actual requirements. For those specialized verification projects that have already been conducted during aircraft development, if it can be determined that the verification requirements and content are consistent with the PMMEL verification requirements, a test report can be provided without re-verification after approval by the relevant review entity.

For example, the AG600 airplane PMMEL verification method for content correctness of the AEG review submission file can be divided into two main categories of written verification and operation verification due to different verification contents.

The written verification is to compare the content of the submitted document of the PMMEL in the AEG review with the design data, the test flight data, the actual technical state of the airplane and the like in writing, review the technical basis and the data source of the document content and ensure the correctness of the content of the submitted document of the PMMEL in the AEG review.

The operation verification is performed through operation of specific content, and specifically includes: simulation machine test, ground test and flight test.

a) And (3) simulation machine test: simulating the flight with faults, and showing that the fault influence analysis is consistent with the actual situation, and/or the working load of the unit is acceptable, and/or the operation program is effective and operable;

b) And (3) ground test: the airplane in the ground state is used, the fault state is set on the airplane, the working state of the system after the fault is demonstrated, the fault influence analysis is consistent with the actual situation, and the airplane is also suitable for performing actual operation demonstration on maintenance or operation programs, and the effectiveness and operability of the programs are demonstrated;

c) Flight test: and (3) demonstrating fault flight, wherein the fault influence analysis is consistent with the actual condition, and/or the workload of the unit is acceptable, and/or the operation program is effective and operable.

And aiming at the elements of the PMMEL suggested project which need to be verified, selecting a proper verification mode according to the following principle 1.

Table 1 selection principle of corresponding verification mode of PMMEL suggested verification object

As shown in table 1, the selected verification mode of the item to be verified is listed as the minimum requirement. Higher requirements of the verification can be actually or according to the requirements of the relevant review units. The basic principle of selecting the verification mode comprises the following steps:

a) Determining a proper (in a form of selecting one or more methods) verification mode according to the content of the verification object;

b) Except for the requirements of related review units, the operation verification is selected according to the priority of the simulation machine test verification, the ground test verification and the flight test verification;

c) Arranging the verification of a plurality of verification objects in one verification activity as much as possible;

d) Before operation verification, the configuration of equipment is required to be ensured to meet the requirement;

e) The selection of the verification mode should ensure that the fault state can be reproduced and the verification result is valid;

f) The suggested revisions may be evaluated and supplemental verification may be conducted as needed.

3.3 evaluation of the validation results

The requirements for verifying the evaluation criteria and conclusions are as follows:

a) Design-related information validation criteria

Through written verification, the contents of system principle, system description, system design data, unit alarm system (CAS) information and the like in a verification object of the PMMEL are evaluated and are consistent with a design configuration.

b) Failure impact validation criteria

Through written verification and operation verification, the fault influence verification standard mainly comprises the following steps:

1) The equipment fault phenomenon and the fault influence are consistent with the result of the system safety analysis;

2) No other unforeseen faults or effects;

3) The impact level meets the MMEL-related requirements.

c) (M) program verification Standard

By written verification and operation verification, (M) program verification criteria include:

1) (M) the program can achieve the effect of reducing the fault influence level;

2) (M) the program is operable.

d) (O) program verification Standard

By written verification and operation verification, (O) program verification criteria include:

1) The (O) program can achieve the effect of reducing the influence level of the fault;

2) The (O) procedure is operational and does not place a large load on the pilot.

e) Pilot load assessment validation criteria

Through operation verification, the pilot load assessment verification criteria include:

1) The relevant restrictions do not affect the safety and operating standards;

2) And relevant limit loads meet requirements under the condition of actual measurement of a pilot.

f) PMMEL validation conclusions

1) And (4) passing. The content of the verification object is consistent with the actual content without modification.

2) And passing after modification. The suggested project maintains a safety level which still meets the requirement, the re-verification is not required to be arranged, only partial content needs to be modified, and the verification can be passed:

the fault impact analysis is substantially accurate, allowing for partial information errors or deletions that do not affect the final conclusion (whether the proposed project can be retained), and/or; not causing a crew workload that results in the proposed project not being dispatchable, and/or; the procedure may achieve the goal of mitigating or eliminating security impacts, and may be accomplished in a predictable environment, allowing for partial information errors or deletions that do not affect the final conclusion.

3) And if not, verifying after modification. The verification object content does not match the reality, and the planned modified content needs to rearrange verification:

under the condition of dispatching with faults, the operation influence caused by subjective judgment of the faults is unacceptable, but other relieving measures exist theoretically and/or; the working load of the unit is greatly increased, and a complete flight task cannot be completed, but other relieving measures exist theoretically and/or; the procedure cannot be completed in the expected environment, but there are theoretically other mitigation measures.

4) Otherwise, the item is cancelled. Verifying that the content of the object does not conform to the reality, evaluating the safety level that the suggested item is regarded as reserved and cannot meet the requirement:

under the condition of dispatching with faults, the operation influence caused by the faults is subjectively judged to be unacceptable, and effective relieving measures and/or effective relieving measures are not available; the workload of the unit is greatly increased, a complete flight task cannot be completed, and effective relieving measures and/or effective relieving measures are/is not provided; the procedure cannot be completed in a predictable environment without effective mitigation.

4 summary of verification

The main task at this stage is to compile a verification report and to archive verification data records; the verification report includes: the verification system comprises a verification overview, verification contents, a verification mode, a verification data processing mode and result, verification personnel evaluation and verification conclusion and the like.

In the specific implementation process, according to the verification report of each verification object in the PMMEL, problems found in verification are summarized in time, and the verification analysis report is completed. The verification analysis report is used for specifically analyzing the verification condition of each verification object, and comprehensively judging whether the expected effect is achieved by verification from the aspects of implementation difference of verification modes, whether the verification purpose is achieved, the influence analysis on PMMEL and the like. And perfecting the PMMEL as required, and submitting the verification process record and the verification result to a relevant review unit for review.

The authentication record and the authentication report in this phase require the following:

a) Authentication record

1) The verification implementing personnel collects and truly records data generated in the verification process, and the verification records are mainly character records and assisted by modes of camera shooting, sound recording and the like;

2) The verification record should be complete and faithfully reflect the state and results at the time of verification.

b) Verification reporting

1) After the verification records are analyzed, a PMMEL verification team needs to compile a verification summary report;

2) The verification report should be compiled from the aspects of verification purpose, object, requirement, resource guarantee, implementation, supplier verification situation (as required), verification result analysis and conclusion, and other necessary supporting materials (such as verification record sheet and evaluation sheet), etc., and it should be determined whether the content of PMMEL meets the requirement, what aspects need to be improved, and the accuracy, rationality and operability of the content of the suggested project should be judged.

3) The verification report needs to pass company-level internal review, and the review team at least comprises a research and development team member, a trial flight team member, a seaworthy team member and a customer service team member and needs to pass the review of related review units.

c) Authentication record management

1) The PMMEL verification team is responsible for checking data such as verification records and the like;

2) All checklists, verification notes and verification reports must be kept archived to ensure data integrity and traceability, PMMEL written verification notes are shown in table 2 and PMMEL operational verification notes are shown in table 3.

TABLE 2 PMMEL written verification notes

TABLE 3 PMMEL operation verification record sheet

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A method for verifying candidate items of an aviation product main minimum equipment list proposal is characterized by comprising the following steps: aiming at a main minimum equipment list recommendation (PMMEL), realizing the verification of each candidate item in the PMMEL through each operation respectively executed in a verification planning stage, a verification preparation stage, a verification implementation stage and a verification summary stage; the method specifically comprises the following steps:

step 1, the operations executed in the verification planning stage include: establishing and releasing a verification scheme and a verification plan of PMMEL, establishing a verification specification and a verification requirement, compiling a verification object list and establishing a verification team;

step 2, the operation executed in the verification preparation stage includes: verifying resource guarantee preparation, compiling a verification task book and a verification outline;

step 3, the operation executed in the verification implementation stage includes: verifying the verification objects of the PMMEL to obtain the evaluation verification result of each verification object, and judging whether to verify again;

step 4, the operations executed in the verification summary stage include: and compiling a verification report based on the verification result, and filing the verification data record so as to form a support material for compliance verification.

2. The method of validating a candidate item in an airline product master minimum equipment list recommendation according to claim 1,

the step 1 of formulating and issuing a verification scheme and a verification plan of PMMEL includes: and according to the compiled PMMEL, combining the model trial flight plan, making a PMMEL verification scheme and a verification plan, and determining the verification mode, the verification opportunity, the verification unit, the verification personnel and the verification location of each candidate item in the PMMEL.

3. The method of validating a candidate item in an airline product master minimum equipment list recommendation according to claim 1,

the step 1 of formulating the verification specification and the verification requirement comprises the following steps: writing a verification specification of each candidate item in the PMMEL, wherein the content of the verification specification at least comprises the following steps: verification purposes, verification conditions, airplane configuration, system state setting, test procedures, test and record requirements and acceptable criteria; the test program comprises preparation work, verification implementation and normal recovery;

the plurality of validation requirements in the validation specification comprises: verifying aircraft requirements, verifying personnel requirements, and verifying record requirements.

4. The method of claim 1, wherein the method of validating a candidate item of an airline product master minimum equipment inventory recommendation,

the step 1 of compiling a verification object list comprises the following steps: compiling a verification object list of the PMMEL by analyzing the respective characteristics of each candidate item in the PMMEL so as to clearly show the content of the required verification in each candidate item in the PMMEL; the items to be verified in the verification object list are part or all of the candidate items selected from the candidate items of the PMMEL;

the step 1 of establishing a verification team group includes: and forming a verification team according to the verification specification, the verification requirement and the verification object list, and clearly verifying the work content and the responsibility of the verification team.

5. The method of claim 1, wherein the method of validating a candidate item of an airline product master minimum equipment inventory recommendation,

the preparation of the verification resource guarantee of step 2 specifies the condition requirements of the verification resource guarantee, and the condition requirements include: verifying the requirements of implementing personnel, facilities and time;

wherein, the requirement of the verification implementers specifies the requirements of the implementers for respectively performing written verification, simulator test verification, flight test verification and ground test verification;

the verification facility requirements are: the verification device configuration used for verifying the item to be verified in the PMMEL is consistent with the configuration specified by the verification requirement;

the verification opportunity requirement is as follows: according to the verification requirements and the schedule of the candidate project recommended by the PMMEL, sufficient time is reserved in the model development stage to carry out verification work.

6. The method of validating a candidate item in an airline product master minimum equipment list recommendation according to claim 1,

the step 2 of compiling the verification task book comprises the following steps: according to the verification mode of a verification object, the verification task book can be divided into a simulator verification task book, a ground test verification task book and a flight test verification task book; the verification task book at least comprises: verifying purposes, supporting conditions, contents, qualified criteria, verification completion forms, personnel division and requirements;

the step 2 of compiling the verification outline comprises the following steps: determining verification working details through a verification outline, and completing special safety evaluation of a PMMEL verification object and support in verification safety; the verification schema at least comprises the following contents: verifying an object, verifying a subject list, verifying requirements and verifying task arrangement; the verification task schedule includes at least: verification purpose, verification method, acceptable criterion, verification result record, meteorological requirement, setting up and risk analysis.

7. The method of claim 1, wherein the method of validating a candidate item of an airline product master minimum equipment inventory recommendation,

the process of implementing verification in step 3 includes:

and (3) implementing PMMEL verification on the simulation training equipment or the airplane according to the verification outline compiled in the step (2), recording the verification process in the verification implementation process, and judging to implement verification again or perform verification summarization according to the evaluation verification result.

8. The method of claim 7, wherein the method of validating a candidate item of an airline product master minimum equipment inventory recommendation,

the PMMEL verification method in step 3 includes: written verification, simulation machine test verification and on-machine test verification; alternatively, the first and second electrodes may be,

the PMMEL verification method in step 3 includes: written verification and operation verification; wherein the operation verification comprises: a simulation machine test, a ground test and a flight test;

the content of the written verification comprises at least: the method comprises the steps of verifying system main function elaboration accuracy, verifying system composition description accuracy, verifying component position information accuracy, verifying system schematic diagram accuracy, verifying control indication description accuracy, verifying system interface description accuracy, verifying whether terms are accurate and consistent, verifying fault description accuracy, verifying fault influence description accuracy, verifying route concurrent fault influence description accuracy, verifying (M) program description accuracy, verifying (O) program description accuracy and verifying limitation information description accuracy;

the content of the operation verification at least comprises: verifying fault influence analysis, verifying (M) program operability, verifying (O) program operability and evaluating unit workload;

the PMMEL verification mode selection principle in the step 3 includes: the method comprises the steps of fault influence analysis and verification mode selection, maintenance (M) program verification mode selection, operation (O) program verification mode selection and unit workload verification mode selection.

9. The method of claim 8, wherein the method of validating a candidate item of an airline product master minimum equipment inventory recommendation,

in step 3, evaluating the criteria of the verification result includes: design related information verification standard, fault influence verification standard, (M) program verification standard, (O) program verification standard, pilot load evaluation verification standard, and verification conclusion judgment standard.

10. The method of claim 1, wherein said step 4 comprises:

step 41, compiling a verification report, and archiving a verification data record; wherein the validation report includes at least: the verification method comprises the steps of verifying general profiles, verifying contents, verifying modes, verifying data processing modes and results, verifying personnel evaluation and verifying conclusions;

and step 42, summarizing the problems found by verification in time according to the verification report of each verification object in the PMMEL to complete a verification analysis report.

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