Дослідний Завод N409 Міністерства Цивільної Авіації
Опытный завод № 409 Министерства гражданской авиации
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Priority to UA4850068ApriorityCriticalpatent/UA13189A/en
Publication of UA13189ApublicationCriticalpatent/UA13189A/en
Ladder contain chassis, flight of stairs established on it, which consists of two sections, and upper gangway with extending part. The flight of stairs is equipped with third section executed in the form of hollow U-shaped frame, and the first and second sections are established with possibility of displacement in the latter in opposite directions.