Aeroflot Flight 846

Aeroflot Flight 846
	RA-85667, the aircraft involved in the accident seen in December 2007
Accident
Date	30 June 2008
Summary	Uncontained engine failure due to the destruction of the compressor disc
Site	Pulkovo Airport, Russia
Aircraft
Aircraft type	Tupolev Tu-154M
Operator	Aeroflot
Registration	RA-85667
Flight origin	Pulkovo Airport, St Petersburg, Russia
Destination	Sheremetyevo International Airport, Moscow, Russia
Passengers	103
Crew	9
Fatalities	0
Survivors	112

Aeroflot Flight 846 was a scheduled passenger flight from Pulkovo Airport, St Petersburg, to Sheremetyevo International Airport, Moscow. On 30 June 2008, the Tupolev Tu-154M aircraft operating the route suffered an engine failure during takeoff from Pulkovo Airport.^[1] There were no fatalities as a result of this accident. Subsequently, Aeroflot made a decision to withdraw all of the remaining Tu-154s from their fleet and replace them with Airbus A320 aircraft.

Aircraft[edit]

The aircraft was built in 1990 by Aviakor, factory number 89A825 and MSN (manufacturer's serial number) 0825. It was first delivered to Aeroflot's Magadan flight division on 8 February 1990 with the registration number СССР-85667. After the collapse of the USSR the aircraft was transferred to the newly-formed MAVIAL Magadan Airlines in 1994 and was re-registered as RA-85667. In 2002 the aircraft was leased out to Kish Air (briefly re-registered as EP-LCD), then in 2004 returned to Russia and leased out to Vladivostok Air. The aircraft returned to MAVIAL in 2005 where it flew until 19 March 2007, when it was acquired by Aeroflot. At the time of the accident this Tupolev Tu-154M accumulated 21690 hours and 8414 cycles.^[2]

Accident[edit]

The aircraft was operating a domestic flight in Russia from Pulkovo Airport, St Petersburg, to Sheremetyevo International Airport, Moscow. There were 103 passengers and 9 crew members onboard. The captain on this flight was S. Yepryntsev. At 15:48 local time the aircraft began its takeoff roll, when at the speed of 60 km/h (37 mph) the crew felt a bang from the rear of the aircraft, after which the left engine flamed out. The crew aborted the takeoff when they realized that the left engine had failed.^[3] The fire extinguishing system activated, preventing a fire.

Investigation[edit]

Federal State Institution State Centre "Flight Safety on Air Transport" investigated the destroyed compressor disc to find the reason behind its failure. On 21 October 2008 the investigation concluded that the low pressure compressor disc developed fatigue cracks, which formed as a result of strain caused by the difference in vibration frequencies. This made the compressor disc's material become too weak.

On 23 December 2008 a final report was released by the authorities, whereby the destruction of the first stage compressor disc was caused by a structural and manufacturing defect rather than incorrect aircraft maintenance. The blame was put on the engine manufacturer "Saturn", which produced the engines for RA-85667.

Aftermath[edit]

Aircraft's aftermath[edit]

The aircraft involved in the accident was subsequently scrapped in August 2009, as repairs of the engine were not deemed economically viable.^[4]

Retirement of Tu-154s[edit]

Following the outcome of this accident, Aeroflot decided to retire the remainder of its Tupolev fleet and replace them with modern Airbus aircraft. This marked a new trend for Russian airlines to replace older Soviet-built aeroplanes with Boeing 737s and Airbus A320s.

After two more accidents with Tu-154s at Domodedovo and Izhma, in March 2011 Rosaviatsiya recommended Russian airlines to temporarily suspend operations of the aircraft until a series of flaws was eliminated.^[5]

As of May 2020 there is only one Tupolev Tu-154 left that is used for passenger services in Russia — RA-85757 flying for Alrosa.^[6]

References[edit]

↑ Ranter, Harro. "ASN Aircraft accident Tupolev Tu-154M RA-85667 Saint Petersburg-Pulkovo Airport (LED)". aviation-safety.net. Retrieved 2020-05-08.
↑ "✈ russianplanes.net ✈ наша авиация". russianplanes.net. Retrieved 2020-05-08.
↑ "Вылет самолета Ту-154 из Петербурга был отменен из-за разрушения двигателя" [Takeoff of the Tu-154 from St. Petersburg cancelled due to engine failure]. www.lastflight.info (in Russian). Retrieved 8 May 2020.CS1 maint: Unrecognized language (link)
↑ Fomin, Andrei (September 2008). ""Аэрофлот" приступает к списанию Ту-154" (PDF). "Взлёт" ("Take-Off") (in Russian). 45: 16.CS1 maint: Unrecognized language (link)
↑ "Росавиация рекомендует авиакомпаниям приостановить полеты Ту-154М". Авиатранспортное обозрение (in русский). 2011-03-11. Retrieved 2020-05-08.
↑ "✈ russianplanes.net ✈ наша авиация". russianplanes.net. Retrieved 2020-05-08.

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[1] Ranter, Harro. "ASN Aircraft accident Tupolev Tu-154M RA-85667 Saint Petersburg-Pulkovo Airport (LED)". aviation-safety.net. Retrieved 2020-05-08.

[2] "✈ russianplanes.net ✈ наша авиация". russianplanes.net. Retrieved 2020-05-08.

[3] "Вылет самолета Ту-154 из Петербурга был отменен из-за разрушения двигателя" [Takeoff of the Tu-154 from St. Petersburg cancelled due to engine failure]. www.lastflight.info (in Russian). Retrieved 8 May 2020.CS1 maint: Unrecognized language (link)

[4] Fomin, Andrei (September 2008). ""Аэрофлот" приступает к списанию Ту-154" (PDF). "Взлёт" ("Take-Off") (in Russian). 45: 16.CS1 maint: Unrecognized language (link)

[5] "Росавиация рекомендует авиакомпаниям приостановить полеты Ту-154М". Авиатранспортное обозрение (in русский). 2011-03-11. Retrieved 2020-05-08.

[6] "✈ russianplanes.net ✈ наша авиация". russianplanes.net. Retrieved 2020-05-08.

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v t e Aviation accidents and incidents in the Soviet Union and Russia
1950s	1950 Sverdlovsk plane crash Aeroflot Flight 4 1958 Aeroflot Tu-104 Kanash crash Aeroflot Flight 315 (1959) Aeroflot Flight 120
1960s	Aeroflot Flight 315 (1960) Aeroflot Flight 207 Austrian Airlines Flight 901 Aeroflot Flight 68 Aeroflot Flight 245 Aeroflot Flight 902 Aeroflot Flight 415 Aeroflot Flight 191 Aeroflot Flight 3 Aeroflot Flight 25 Aeroflot Flight 12 CCCP-45021 Aeroflot Flight 663 Aeroflot Flight 721 Aeroflot Flight 20 Aeroflot Flight 513 Aeroflot Flight 99 Aeroflot Flight 65 Aeroflot Flight 2723 Aeroflot Flight 5003 (1967) Aeroflot Flight 2230 Aeroflot Flight 51 Aeroflot Flight 15 Aeroflot Flight 831 Aeroflot Flight 826 1969 Yukhnov mid-air collision
1970s	Aeroflot Flight U-45 Aeroflot Flight 1661 CCCP-11000 CCCP-12996 Aeroflot Flight 1969 Aeroflot Flight 1912 Malév Flight 110 Aeroflot Flight 773 Aeroflot Flight 2174 Aeroflot Flight 1491 Aeroflot Flight 558 Aeroflot Flight 1036 Aeroflot Flight 217 Japan Airlines Flight 446 Aeroflot Flight 6263 Aeroflot Flight 141 Aeroflot Flight 630 Balkan Bulgarian Airlines Flight 307 Aeroflot Flight 6551 Aeroflot Flight 109 Aeroflot Flight 13 Aeroflot Flight 3932 Aeroflot Flight 964 Aeroflot Flight 19 Aeroflot Flight 2022 CCCP-75559 1974 Surgut mid-air collision Aeroflot Flight 2003 Aeroflot Flight 3739 (1976) Aeroflot Flight 909 Aeroflot Flight 1802 Aeroflot Flight 418 1976 Anapa mid-air collision Aeroflot Flight 2415 Aeroflot Flight 36 (1976) Aeroflot Flight 3843 Aeroflot Flight 5003 (1977) Aeroflot Flight 331 CCCP-65639 Aeroflot Flight 2 Korean Air Lines Flight 902 Aeroflot Flight 1080 Aeroflot Flight 1691 1979 Dniprodzerzhynsk mid-air collision Aeroflot Flight 5484
1980s	Aeroflot Flight 4225 1981 Pushkin Tu-104 crash Aeroflot Flight 498 1981 Armenia mid-air collision Aeroflot Flight 811 Aeroflot Flight 3603 Aeroflot Flight 8641 Aeroflot Flight 411 Aeroflot Flight 343 Aeroflot Flight 5463 Aeroflot Flight 601 Aeroflot Flight 3352 Aeroflot Flight 3519 Aeroflot Flight 7841 Aeroflot Flight 8381 Aeroflot Flight 7425 Aeroflot Flight 101/435 Aeroflot Flight 2306 Aeroflot Flight 6502 Aeroflot Flight 892 Aeroflot Flight 505 Aeroflot Flight 528 Aeroflot Flight 3739 (1988) Korean Air Lines Flight 007
1990s	Aeroflot Flight 2808 (1992) Sakha Avia Flight 301 (1993) Aeroflot Flight 593 (1994) Stavropolskaya Aktsionernaya Avia Flight 1023 (1997)
2000s	Vladivostok Air Flight 352 (2001) Siberia Airlines Flight 1812 (2001) Pulkovo Aviation Enterprise Flight 9560 (2002) 2004 Russian aircraft bombings (2004) Armavia Flight 967 (2006) S7 Airlines Flight 778 (2006) Aeroflot Flight 821 (2008)
2010s	Smolensk air disaster (2010) Dagestan Airlines Flight 372 (2010) Kolavia Flight 348 (2011) RusAir Flight 9605 (2011) Lokomotiv Yaroslavl plane crash (2011) Red Wings Airlines Flight 9268 (2012) Tatarstan Airlines Flight 363 (2013) 2014 Vnukovo Airport Falcon 50 crash (2014) Flydubai Flight 981 (2016) 2016 Russian Defence Ministry Tupolev Tu-154 crash (2016) Khabarovsk Airlines Flight 463 (2017) Saratov Airlines Flight 703 (2018) Aeroflot Flight 1492 (2019) Ural Airlines Flight 178 (2019)

Aeroflot Flight 846

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