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Aeroflot Flight 8641
Aeroflot Flight 8641 was a Yakovlev Yak-42 airliner on a domestic scheduled passenger flight from Leningrad to Kyiv. On 28 June 1982, the flight crashed south of Mozyr, Belorussian SSR, killing all 132 people on board. The accident was both the first and deadliest crash of a Yakovlev Yak-42, and remains the deadliest aviation accident in Belarus. The cause was a failure of the jackscrew controlling the horizontal stabilizer due to a design flaw. Aircraft and crew The Yakovlev Yak-42 involved in the accident was registered to Aeroflot as CCCP-42529 (manufacturer number 11040104, series number 04-01). The aircraft made its maiden flight on 21 April 1981 and was delivered to Ministry of Civil Aviation on 1 June 1981. At the time of the accident it had 795 flight hours and 496 takeoff and landing cycles. All 124 passenger seats were filled, 11 by children. The cockpit crew consisted of: * Captain Vyacheslav Nikolaevich Musinsky * Co-pilot Alexandr Sergeevich Stigarev * Navigat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jackscrew
A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderately and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses. Description A screw jack consists of a heavy-duty vertical screw with a load table mounted on its top, which screws into a threaded hole in a stationary support frame with a wide base resting on the ground. A rotating collar on the head of the screw has holes into which the handle, a metal bar, fits. When the handle is turned clockwise, the screw moves further out of the base, lifting the load resting on the load table. In order to support large load forces, the screw is usually formed with Acme threads. Advantages An advantage of jackscrews over some other types of jack is that they are ''self-locking'', which means when the rotational force on the screw is removed, it will rema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
