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1987 aviation accident

Aeroflot Flight U-505
Accident
An Aeroflot Yak-40, similar to the one involved.
Date	16 January 1987 (1987-01-16)
Summary	Wake turbulence (from an Il-76)
Site	Tashkent Airport, Tashkent, Uzbekistan
Aircraft
Aircraft type	Yakovlev Yak-40
Operator	Aeroflot
Registration	CCCP-87618
Flight origin	Tashkent Airport, Soviet Uzbekistan, USSR
Destination	Shahrisabz, Soviet Uzbekistan, USSR
Occupants	9
Passengers	5
Crew	4
Fatalities	9
Survivors	0

Aeroflot Flight U-505 crashed just after takeoff in Tashkent on 16 January 1987. Flight 505 was an early morning flight from Tashkent to Shahrisabz, both in the Uzbek Soviet Socialist Republic, now the Republic of Uzbekistan. The flight took off just one minute and 28 seconds after an Ilyushin Il-76, thus encountering its wake vortex. The Yakovlev Yak-40 then banked sharply to the right, struck the ground, and caught fire. All 9 people on board died.

Aircraft and crew

The aircraft involved, a Yakovlev Yak-40, was registered to Aeroflot as CCCP-87618. At the time of the accident, the aircraft had sustained 17,132 flight hours and 20,927 cycles (one cycle equals one takeoff and landing).

The crew consisted of the following:

Captain T. Yunusbek (Юнусбеков Т.)
Co-pilot Valery Strunin (Струнин Валерий Александрович)
Flight engineer R. F. Davydov (Давыдов Р. Ф.)

Sequence of events

The plane was scheduled to ferry cargo from Tashkent to Shakhrisabz. On board were 1,200 kilograms of mail and 35 kilograms of personal luggage, along with four passengers seated in the cabin. Takeoff weight was 14.4 tons, within the acceptable range. The crew was in a hurry to depart because the cargo was not loaded until 6:00 local time and they were scheduled to depart Tashkent at 5:55; hence the crew took less than a minute to complete the preflight checklist instead of the usual five minutes. They proceeded to start taxiing on taxiway three to Runway 8L. At 6:09:40 the Il-76 (CCCP-76482) took off from the runway. Immediately they contacted the control tower and requested clearance for takeoff. After receiving permission to taxi onto the runway, and at 6:10:58 they took off without explicit permission to take off, in violation of procedure. The crew put the engines to full power accelerating at 124.2 knots; but at 6:11:04 when the aircraft was no more than 20 meters off the ground it started to bank sharply to the right and at 6:11:15 it crashed into the ground, killing all nine people aboard.

Cause

The Yak-40 took off 1 minute and 28 seconds after an Ilyushin Il-76. When investigating the causes of the disaster the commission found that despite the IL-76's position it still would have left wake turbulence. The wind was only 1 mph, leading to the conclusion that the behavior of the aircraft Yak-40 can be explained only by hitting the wake turbulence of a much heavier Il-76 taking off from the same runway in just 1 minute 15 seconds before the Yak-40. Tashkent Airport had a minimum takeoff interval of only one minute, regardless of aircraft type, leading to the relatively small Yak-40 quickly losing control and crashing upon encountering the wake vortex.

References

"ASN Aircraft accident Yakovlev 40 CCCP-87618 Tashkent-Yuzhny Airport (TAS)". aviation-safety.net. Aviation Safety Network. Archived from the original on 2005-04-06. Retrieved 2017-12-29.
^ "Яковлев Як-40 Бортовой №: СССР-87618" [Yakovlev Yak-40 Board number: USSR-87618]. russianplanes.net (in Russian). Archived from the original on 2012-10-30. Retrieved 2017-01-09.
"160187 - Авиакатастрофы - - Каталог статей - Любителям гражданской авиации посвящается..." [160187 - Plane accidents - Catalog of articles - Dedicated to fans of civil aviation...]. dream-air.ru (in Russian). Archived from the original on 2017-12-29. Retrieved 2017-12-29.
^ "Катастрофа Як-40 Узбекского УГА в а/п Ташкент-Южный" [Accident of Yak-40 of the Uzbek UGA at the airport Tashkent-Yuzhny]. www.airdisaster.ru (in Russian). Archived from the original on 2009-03-03. Retrieved 2017-01-09.

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 1987 (1987)
Jan 3 Varig Flight 797Jan 15 SkyWest Airlines Flight 1834Jan 16 Aeroflot Flight U-505Mar 4 Northwest Airlink Flight 2268Apr 4 Garuda Indonesia Flight 035May 8 American Eagle Flight 5452May 9 LOT Flight 5055May 19 Air New Zealand Flight 24Jun 11 Bakhtar Afghan Airlines Antonov An-26 shootdownJun 19 Aeroflot Flight N-528Jun 26 Philippine Airlines Flight 206Jul 24 Air Afrique Flight 056Jul 30 Mexico City Boeing C-97 crashAug 16 Northwest Airlines Flight 255Aug 31 Thai Airways Flight 365Oct 11 Burma Airways Fokker F27 crashOct 15 Aero Trasporti Italiani Flight 460Oct 20 Ramada Inn Corsair crashNov 15 Continental Airlines Flight 1713Nov 28 South African Airways Flight 295Nov 29 Korean Air Flight 858Dec 7 Pacific Southwest Airlines Flight 1771Dec 8 Alianza Lima disasterDec 13 Philippine Airlines Flight 443Dec 21 Air Littoral Flight 1919Dec 23 Finnair Flight 915
1986 ◄ ► 1988

Aviation accidents and incidents in 1987 (1987)

Jan 3 Varig Flight 797Jan 15 SkyWest Airlines Flight 1834Jan 16 Aeroflot Flight U-505Mar 4 Northwest Airlink Flight 2268Apr 4 Garuda Indonesia Flight 035May 8 American Eagle Flight 5452May 9 LOT Flight 5055May 19 Air New Zealand Flight 24Jun 11 Bakhtar Afghan Airlines Antonov An-26 shootdownJun 19 Aeroflot Flight N-528Jun 26 Philippine Airlines Flight 206Jul 24 Air Afrique Flight 056Jul 30 Mexico City Boeing C-97 crashAug 16 Northwest Airlines Flight 255Aug 31 Thai Airways Flight 365Oct 11 Burma Airways Fokker F27 crashOct 15 Aero Trasporti Italiani Flight 460Oct 20 Ramada Inn Corsair crashNov 15 Continental Airlines Flight 1713Nov 28 South African Airways Flight 295Nov 29 Korean Air Flight 858Dec 7 Pacific Southwest Airlines Flight 1771Dec 8 Alianza Lima disasterDec 13 Philippine Airlines Flight 443Dec 21 Air Littoral Flight 1919Dec 23 Finnair Flight 915

1986 ◄ ► 1988

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 Uzbekistan
Uzbek SSR	Tashkent Tupolev ANT-20bis crash (December 1942) Aeroflot Flight U-45 (February 1970) Aeroflot Flight 5143 (July 1985) Aeroflot Flight U-505 (April 1987) Navoiy Aeroflot Antonov An-24 crash (March 1991)
Uzbekistan	Uzbekistan Airways Flight 1154 (January 2004)
This includes accidents in the Uzbek SSR and post-independence Uzbekistan

Categories:

Aircraft and crew

Sequence of events

Cause

See also

References