Aeroflot Flight 8641 - Misplaced Pages

1982 aviation accident

Aeroflot Flight 8641
Accident
An Aeroflot Yak-42 in 1981, similar to the accident aircraft
Date	28 June 1982 (1982-06-28)
Summary	Jackscrew failure due to metal fatigue; design flaw
Site	Near Mazyr, Byelorussian SSR, Soviet Union 52°0′N 29°13′E / 52.000°N 29.217°E / 52.000; 29.217
Aircraft
Aircraft type	Yakovlev Yak-42
Operator	Aeroflot
IATA flight No.	SU8641
ICAO flight No.	AFL8641
Call sign	AEROFLOT 8641
Registration	СССР-42529
Flight origin	Pulkovo Airport, Leningrad, Russian SFSR, Soviet Union
Destination	Kiev (now Kyiv)-Zhuliany International Airport, Kiev, Ukrainian SSR, Soviet Union
Occupants	132
Passengers	124
Crew	8
Fatalities	132
Survivors	0

Aeroflot Flight 8641 was a Yakovlev Yak-42 airliner on a domestic scheduled passenger flight from Leningrad (now Saint Petersburg) to Kiev (now Kyiv). On 28 June 1982, the flight crashed south of Mazyr, Byelorussian 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 СССР-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 flight crew consisted of:

Captain Vyacheslav Nikolaevich Musinskiy
Co-pilot Alexander Sergeevich Stigariev
Flight engineer Nikolai Semyonovich Vinogradov
Navigator-trainee Viktor Ivanovich Kedrov
Flight Attendant Anna Nikolaevna Sheykina
Flight Attendant Tamara Mikhailovna Vasishcheva
Flight Attendant Olga Pavlovna Pavlova
Flight Attendant Yury Borisovich Ryabov

Sequence of events

The aircraft took off from Pulkovo Airport at 9:01 Moscow time, having been delayed one minute because of a late passenger. At 10:45 it entered the zone of Kiev/Boryspil air traffic control Center. The crew started the landing checklist at 10:48:01. At 10:48:58 the crew informed the air traffic controller they reached the planned top of descent point, the controller clearing them for descent to FL255 (approximately 25,500 feet (7,800 m)). The crew confirmed the flight path; no further communications were heard from Flight 8641.

At 10:51:20 the autopilot gradually brought about a horizontal stabilizer angle of up 0.3° for descent for landing. At 10:51:30 the stabilizer angle sharply increased, exceeding the 2° limit within half a second. The sudden change resulted in a negative g-force of -1.5 g, but the autopilot adjusted the controls to lower it to -0.6 g. As the stabilizer did not respond to commands and the plane went on diving, the autopilot switched off after 3 seconds. The pilots pulled back on the yoke trying to level out the plane, but it continued into a steep dive; soon it rolled 35° left and the dive achieved 50°. As it rolled counterclockwise with over -2 g of overload, the aircraft disintegrated at 10:51:50 at the altitude of 5,700 metres (18,700 ft) and the instrument speed of 810 kilometres per hour (440 kn; 500 mph).

The wreckage was found on the outskirts of Verbavychi village, 10 kilometres (6.2 mi) southeast of the district center Naroulia (itself being further 18 km south/west of the larger Mozyr which is often listed.) Fragments of the plane were scattered across an area of 6.5 by 3.5 kilometres (4.0 by 2.2 mi). All 132 people on board perished.

Cause

The cause was determined to be a failure of the jackscrew mechanism in the aircraft's tail due to metal fatigue, which resulted from flaws in the Yak-42's design. The investigation concluded that among the causes of the crash were poor maintenance, as well as the control system of the stabilizer not meeting basic aviation standards. Three engineers who signed the jackscrew drawings were convicted.

As for the official cause of the crash: "the spontaneous movement of the stabilizer was due to disconnection in flight of the jackscrew assembly due to the almost complete deterioration of the 42M5180-42 thread-nuts due to structural imperfections in the mechanism." Due to the accident, all Yak-42s were withdrawn from service until the design defect was rectified in October 1984.

References

^ "ASN Aircraft accident Yakovlev 42 СССР-42529 Mozyr". aviation-safety.net. Retrieved 2017-12-29.
"УПАВШИЕ С НЕБА. Архив БГ. №29 (345) 29 июля 2002 г. БелГазета. Новости Беларуси. Белорусские новости" [FALLEN FROM THE SKY. BG archive. No. 29 (345) July 29, 2002 BelGazeta. News of Belarus. Belarusian news]. www.belgazeta.by (in Russian). Retrieved 2017-01-11.
^ "Яковлев Як-42 Бортовой №: СССР-42529" [Yakovlev Yak-42 Bortovoy No.: USSR-42529]. russianplanes.net (in Russian). Retrieved 2017-12-29.
Documentary detective (2014-09-15). "Документальный детекти полёт..." [Documentary detective flight...]. YouTube (in Russian). Retrieved 2017-01-11.
^ "Катастрофа Як-42 Ленинградского УГА близ Наровли, Белоруссия" [Accident of the Yak-42 of the Leningrad UGA near Narovlya, Belarus]. www.airdisaster.ru (in Russian). Retrieved 2017-01-11.
Gordon, Komissarov and Komissarov 2005, p. 315.

Aeroflot

Part of SkyTeam alliance

Subsidiaries

Active	Pobeda Rossiya
Inactive	Dobrolet Donavia Orenair SAT Airlines Vladivostok Air
Exited	Aurora Nordavia (now Smartavia)

Fleet

Accidents and
incidents

1940s	G-2 Alma-Ata crash ANT-20bis crash CCCP-Л1450 crash Flight 17
1950s	Il-12 Karaganda crash Il-12 Novosibirsk crash Kemerovo mid-air collision Flight 229 Flight 783 Flight 10 Flight 136 Flight 214 Flight 229 Kiev mid-air collision Flight 11 Flight 10 Flight 105 Flight 04 Flight 365 Flight 164 Il-12 Lazo crash Тu-104 Kanash crash Flight 200 Flight 315
1960s	Flight 315 Flight 207 Flight 036 Flight 068 Flight 245 Flight 902 Flight 415 Flight 03 Flight 213 Flight 191 Flight 25 Flight 012 Flight 366 Flight 663 Flight 721 Flight 101/X-20 Flight 542 Flight 513 Flight 99 Flight 065 Flight 2723 Flight 5003 Flight 2230 Flight L-51 Flight 1668 Flight 15 Flight 831 Flight F-28 Flight N-826
1970s	Flight U-45 Flight 1661 Flight 3630 CCCP-11000 crash CCCP-12996 crash Flight 1969 Flight 1912 Flight 773 Flight N-63 Flight 2174 Flight 1491 Flight 558 Flight 1036 Flight 217 Flight 6263 Flight 141 Flight 630 Flight X-167 Flight 6551 Flight 109 Flight A-13 Flight 3932 Flight 964 Flight 19 Flight 2022 Flight 2420 CCCP-75559 crash Flight 662 Flight E-15 Flight A-53 Flight 2003 Flight 3739 Flight 909 Flight 1802 Flight 418 Flights 7957 and 31 Flight 2415 Flight N-36 Flight 3843 Flight 5003 Flight 331 Flight B-2 Flight 6709 Flight 1080 Flight 6515 Flight 1691 Flights 7628 and 7880 Flight 5484
1980s	Flight 4225 Flight 498 Flight 811 Flight 3603 Flight 8641 Flight 411 Flight 343 Flight 5463 Flight 601 Flight 3352 Flight F-637 Flight 3519 Flight 7841 Zolochiv mid-air collision Flight 5143 Flight 101/435 Flight F-77 Flight 2306 Flight 6502 Flight 892 Flight U-505 Flight N-528 Flight 699 Flight 3739
since 1990s	Flight E-35D CCCP-46472 crash Flight 2808 Flight 593 Flight 521 Flight 821 Flight 1492

v t e Aviation accidents and incidents in 1982 (1982)
Jan 13 Air Florida Flight 90Jan 18 Thunderbirds Indian Springs diamond crashJan 23 World Airways Flight 30Feb 6 Korean Air Force C-123 crashFeb 9 Japan Air Lines Flight 350Feb 21 Pilgrim Airlines Flight 458Mar 11 Widerøe Flight 933Mar 20 Garuda Fokker F28 crashMar 26 Aeropesca Colombia Flight 217Apr 26 CAAC Flight 3303May 25 RAF Jaguar shootdown incidentMay 25 VASP Flight 234Jun 6 British Army Gazelle friendly fire incidentJun 8 VASP Flight 168Jun 12 TABA Fairchild FH-227 accidentJun 21 Air India Flight 403Jun 24 British Airways Flight 009Jun 28 Aeroflot Flight 8641Jul 6 Aeroflot Flight 411Jul 9 Pan Am Flight 759Jul 23 Twilight Zone accidentAug 11 Pan Am Flight 830Aug 14 Sukhumi Dranda Airport runway collisionAug 26 Southwest Air Lines Flight 611Sep 1 Aerocondor DHC-4 Caribou accidentSep 13 Spantax Flight 995Sep 13 Bristow Helicopters Bell 212 accidentSep 17 Japan Airlines Flight 792Sep 29 Aeroflot Flight 343Dec 9 Aeronor Flight 304Dec 24 CAAC Flight 2311
1981 ◄ ► 1983

Aviation accidents and incidents in 1982 (1982)

Jan 13 Air Florida Flight 90Jan 18 Thunderbirds Indian Springs diamond crashJan 23 World Airways Flight 30Feb 6 Korean Air Force C-123 crashFeb 9 Japan Air Lines Flight 350Feb 21 Pilgrim Airlines Flight 458Mar 11 Widerøe Flight 933Mar 20 Garuda Fokker F28 crashMar 26 Aeropesca Colombia Flight 217Apr 26 CAAC Flight 3303May 25 RAF Jaguar shootdown incidentMay 25 VASP Flight 234Jun 6 British Army Gazelle friendly fire incidentJun 8 VASP Flight 168Jun 12 TABA Fairchild FH-227 accidentJun 21 Air India Flight 403Jun 24 British Airways Flight 009Jun 28 Aeroflot Flight 8641Jul 6 Aeroflot Flight 411Jul 9 Pan Am Flight 759Jul 23 Twilight Zone accidentAug 11 Pan Am Flight 830Aug 14 Sukhumi Dranda Airport runway collisionAug 26 Southwest Air Lines Flight 611Sep 1 Aerocondor DHC-4 Caribou accidentSep 13 Spantax Flight 995Sep 13 Bristow Helicopters Bell 212 accidentSep 17 Japan Airlines Flight 792Sep 29 Aeroflot Flight 343Dec 9 Aeronor Flight 304Dec 24 CAAC Flight 2311

1981 ◄ ► 1983

v t e Aviation accidents and incidents in the Soviet Union in the 1980s and 1990s
1980	Aeroflot Flight Sh-88 (June 1980) Aeroflot Flight 4225 (July 1980)
1981	Pushkin Tu-104 crash (February 1981) Aeroflot Flight 498 (June 1981) Armenia mid-air collision (July 1981) Aeroflot Flight 811 (August 1981) Zheleznogorsk mid-air collision (September 1981) Aeroflot Flight 3603 (November 1981)
1982	Aeroflot Flight 8641 (June 1982) Aeroflot Flight 411 (July 1982) Sukhumi Dranda Airport runway collision (August 1982)
1983	Aeroflot Flight E-46 (April 1983) Aeroflot Flight 5463 (August 1983) Korean Air Lines Flight 007 (September 1983) Aeroflot Flight 601 (December 1983)
1984	Aeroflot Flight 3352 (October 1984) Aeroflot Flight 3519 (December 1984)
1985	Aeroflot Flight 7841 (February 1985) Zolochiv mid-air collision (May 1985) Aeroflot Flight 5143 (July 1985) Aeroflot Flight 101/435 (December 1985)
1986	Aeroflot Flight F-77 (March 1986) Aeroflot Flight 2306 (July 1986) Aeroflot Flight 6502 (October 1986)
1987	Aeroflot Flight N-528 (June 1987) Aeroflot Flight U-505 (July 1987)
1988	Aeroflot Flight 699 (18 January 1988) Aeroflot Flight 29674 (24 January 1988) Aeroflot Flight 3739 (March 1988) Soviet Air Force Il-76 crash (December 1988)
1989	Soviet Air Force Ilyushin Il-76 crash (October 1989) Aeroflot Flight 37577 (November 1989)
1990	Aeroflot Flight 6246 (January 1990) Navoiy Aeroflot An-24 crash (March 1990)
1991	Aeroflot Flight 8556 (May 1991) Yugavia Flight S-519 (7 November 1991) Azerbaijani Mil Mi-8 shootdown (20 November 1991)
1970–1979 ◄ 1980–1991 ► 1990–1999 (Russia) Aviation incidents in other Post-Soviet states: Armenia · Azerbaijan · Belarus · Georgia · Kazakhstan · Kyrgyzstan · Tajikistan · Ukraine · Uzbekistan

v t e Aviation accidents and incidents in Belarus
Byelorussian SSR	Aeroflot Flight 8641 (June 1982) Aeroflot Flight 7841 (February 1985)
Belarus	Teddybear Airdrop Minsk 2012 (July 2012) Ryanair Flight 4978 (May 2021)
This includes accidents in the Byelorussian SSR and post-independence Belarus

52°3′0″N 29°16′0.12″E / 52.05000°N 29.2667000°E / 52.05000; 29.2667000

Categories:

Aircraft and crew

Sequence of events

Cause

See also

References