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Aeroflot Flight 7841 was a scheduled Soviet domestic passenger flight from Minsk to Leningrad (now Saint Petersburg), which crashed on 1 February 1985 killing fifty eight people on board.[1] Twenty-two people (including three crew members) survived the accident.[1] The crash was caused by engine failure brought on by ice ingestion. On 8 May 1985 the Tupolev Tu-134A was officially written off.[2]

Aeroflot Flight 7841
Soviet Aeroflot Tupolev Tu-134A, similar to that involved in the accident
Occurrence
Date1 February 1985 (1985-02-01)
SummaryDouble engine failure, due to ice ingestion
SiteMinsk-2 International Airport (MSQ/UMMS), Byelorussian SSR
53°52′44.76″N 28°11′42.36″E
Aircraft
Aircraft typeTupolev Tu-134A
OperatorAeroflot
RegistrationCCCP-65910
Flight originMinsk-2 International Airport (MSQ/UMMS), Byelorussian SSR
DestinationLeningrad-Pulkovo Airport (LED/ULLI) Russian SSR
Occupants80
Passengers74
Crew6
Fatalities58
Survivors22

Aircraft


The Tupolev Tu-134A, registration number CCCP-65910, serial number 63969, involved in the accident was manufactured on 11 May 1982 and had 448 completed flight cycles prior to the accident, having entered service on 8 June 1982.[2][1] Tu-134s are equipped with two tail-mounted Soloviev D-30 turbofan engines.[3]


Crash


Six seconds after takeoff, at an altitude of 35 metres (115 ft) and with a speed of 325 km/h (175 kn; 202 mph), a rapid loss of power occurred, accompanied by pops and Jet Pipe Temperature (JPT) overheating.[1] The crew levelled the wings and continued climbing, when the co-pilot reported a failure of the left engine to air traffic control.[1] At 65 seconds after takeoff, an excessive vibration alarm indicated failure of the right engine.[1] Then, at an altitude of 240 metres (790 ft) and a speed of 325 km/h (175 kn; 202 mph), the right engine failed, while the aircraft was still in the clouds.[1] In an attempt to retain speed, the captain initiated a descent with a vertical speed of 7 metres per second (23 ft/s).[1] The aircraft was descending onto forest, with some trees up to 30 m in height.[1] At an altitude of 22 m (72 ft) and with a five-degree right bank angle, the aircraft impacted the tree tops. The aircraft continued hitting the trees and ultimately burned down except the aft portion.

The crash site was located 10 kilometres (6.2 mi; 5.4 nmi) east of Minsk National Airport by search groups after three hours.[4][1]


Investigation


The investigation concluded that both engines failed due to ice ingestion, which led to compressor stall, destruction of the compressors and over-temperature of the turbine blades.[1] Citing significant damage to the aircraft and engines, the investigators were unable to determine where the ice came from.[1]


References


  1. Катастрофа Ту-134А Белорусского УГА в районе а/п Минск-2 (in Russian). Airdisaster.ru. Retrieved 21 July 2014.
  2. "Туполев Ту-134АК Бортовой №: CCCP-65910" (in Russian). Russianplanes.net. Retrieved 21 July 2014.
  3. "Tu-134". Tupolev. Archived from the original on 31 January 2015. Retrieved 31 January 2015.
  4. "Accident description". Aviation Safety Network. Retrieved 21 July 2014.

На других языках


[de] Aeroflot-Flug 7841

Am 1. Februar 1985 musste eine Tupolew Tu-134 auf dem innersowjetischen Linienflug Aeroflot-Flug 7841 von Minsk nach Leningrad (heute: Sankt Petersburg) nach dem Ausfall beider Triebwerke im Gelände notlanden, wobei 58 der 80 Insassen starben. Es ist nach dem Aeroflot-Flug 8641 der zweitschwerste Flugunfall im heutigen Belarus.
- [en] Aeroflot Flight 7841

[fr] Vol Aeroflot 7841

Le vol Aeroflot 7841 était un vol transportant des passagers de Minsk à Leningrad (actuelle Saint-Pétersbourg). L'avion s'est écrasé le 1er février 1985, tuant 58 personnes[1]. 22 personnes (dont trois membres de l'équipage) survécurent à l'accident[1]. Le crash a été causé par une panne moteur à la suite de l'ingestion de glace. Le 8 mai 1985, l'avion fut déclaré irrécupérable[2].

[ru] Катастрофа Ту-134 под Минском

Катастрофа Ту-134 под Минском — крупная авиационная катастрофа, произошедшая 1 февраля 1985 года в Минской области (БССР). Авиалайнер Ту-134АК предприятия «Аэрофлот» выполнял рейс SU-7841 по маршруту Минск—Ленинград, но через несколько секунд после взлёта у него отказал один двигатель, а затем и второй. Не имея возможности вернуться обратно в аэропорт вылета, экипаж совершил жёсткую посадку в лесу. При столкновении с деревьями самолёт разрушился, из находившихся на его борту 80 человек (74 пассажира и 6 членов экипажа) погибли 58.



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