Aeroflot Flight 25 - Event - avia.wikisort.org

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Aeroflot Flight 25 (Russian: Рейс 25 Аэрофлота Reys 25 Aeroflota) was a scheduled domestic passenger flight that crashed on 4 April 1963 in the region of Rybnaya Sloboda, Tatar ASSR, Russian SFSR the while en route from Moscow-Sheremetyevo to Krasnoyarsk Airport, Russian SFSR. All 67 people aboard were killed in the accident.[1]

Aeroflot Flight 25
Accident
An Aeroflot Il-18V, similar to the one involved in the accident
Date	4 April 1963 (1963-04-04)
Summary	Engine malfunction
Site	Pestrechinsky District, Tatar ASSR, Russian SFSR 55°28′12″N 50°23′50″E
Aircraft
Aircraft type	Ilyushin Il-18V
Operator	Aeroflot
Registration	СССР-75866
Flight origin	Sheremetyevo International Airport, Moscow
Destination	Yemelyanovo Airport, Krasnoyarsk Krai
Occupants	67
Passengers	59
Crew	8
Fatalities	67
Survivors	0

Aircraft

The aircraft involved in the accident was an Ilyushin Il-18V registered CCCP-75866 to Aeroflot. At the time of the accident, the aircraft had sustained only 154 flight hours and 68 pressurization cycles because it had been released from the factory just in March that same year.[2]

Description of accident

Flight 25 departed from Moscow-Sheremetyevo at 03:12 local time and held an altitude of 6000 meters after takeoff. 59 passengers and 8 crew members were aboard the aircraft. Due to the rate of fuel consumption the crew requested permission from the controller to increase altitude to 8000 meters, but the request was initially denied because there was a Tu-104 at that altitude in the same air corridor. At 04:15 the Tu-104 reported passing Kanash and was approximately 40-50 kilometers past the Il-18. The air traffic controller then gave the Il-18 permission to climb to an altitude of 8000 meters at 04:22. The crew confirmed receiving the permission, and at 04:26 the flight reported passing Laishevo at an altitude of 7500 meters while ascending to the altitude of 8000 meters. This was the last communication from the aircraft and when the controller attempted to reach the aircraft at 04:30, no response was heard.[3][4] The No. 4 engine malfunctioned in such a way that it initiated reverse thrust causing severe drag on the right wing; pilots had to feather both propellers on the right wing because they could not figure out which propeller was responsible for the failure in time. The severe drag led to the aircraft descending sharply until it briefly retained controlled flight at altitudes between 150–200 meters; the harsh aerodynamic loads the aircraft endured tore off both ailerons and the aircraft then plummeted into the ground. The aircraft crashed into a field in Pestrechinsky at 04:30 at a speed of 500–600 km/h, killing all 67 people on board.[3]

Conclusions

The commission responsible for the investigation of the accident determined that the most likely cause of the accident was the failure of the No. 4 propeller pitch control mechanism on the right wing, which malfunctioned and created severe drag. The failure of the pitch control mechanism led to the subsequent failure of the speed regulator while in the lower position causing the screw to initiate thrust reversal. Because the crew was unable to establish which of the right props was causing drag, both propellers had to be feathered. The amount of drag on the right wing had put the aircraft in a sharp descent, in which the aircraft recovered from briefly before both ailerons tore off the aircraft and the aircraft crashed. Laboratory simulation showed that the failure of the pitch control mechanism was caused by a defect in the oil sealing rubber gasket on the oil transporter of the screw which was caused by incorrect assembly of the AV-68I propeller at the factory. The defect in the mechanism could not be detected in flight and only could be seen by examining the screw and checking it for defects during maintenance.[1][3][5]

References

"ASN Aircraft accident Ilyushin 18 CCCP-75866 Urakhcha, Rybnaya Sloboda district, Tatarstan". aviation-safety.net. Retrieved 2017-12-23.
"Ильюшин Ил-18В Бортовой №: СССР-75866". russianplanes.net. Retrieved 2017-12-23.
"Катастрофа Ил-18В Красноярского управления ГВФ близ Казани". www.airdisaster.ru. Retrieved 2017-12-23.
"Crash of an Ilyushin II-18V near Urakhcha: 67 killed | Bureau of Aircraft Accidents Archives". www.baaa-acro.com. Retrieved 2017-12-23.
"ACCIDENT DETAILS". www.planecrashinfo.com. Retrieved 2017-12-23.

Aeroflot

Part of the SkyTeam alliance

Subsidiaries

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

Fleet

Accidents and
incidents

1950s	Flight 04 Тu-104 Kanash crash Flight 120 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 N-826
1970s	Flight U-45 Flight 1661 Flight 3630 CCCP-11000 crash CCCP-12996 crash Flight 1969 Flight 1912 Flight 773 Flight 2174 Flight 1491 Flight 558 Flight 1036 Flight 217 Flight 6263 Flight 141 Flight 630 Flight 6551 Flight 109 Flight A-13 Flight 3932 Flight 964 Flight 19 Flight 2022 CCCP-75559 crash Flight 662 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 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 3519 Flight 7841 1985 Zolochiv mid-air collision Flight 7425 Flight 101/435 Flight 2306 Flight 6502 Flight 892 Flight U-505 Flight N-528 Flight 699 Flight 3739
since 1990s	Flight 2808 Flight 593 Flight 821 Flight 1492

Sheremetyevo International Airport
List of Aeroflot destinations

Aviation accidents and incidents in 1963

Jan 13 Elephant Mountain B-52 crash
Feb 1 1963 Ankara mid-air collision
Feb 12 Northwest Orient Airlines Flight 705
Mar 5 Aeroflot Flight 191
Mar 5 Camden PA-24 crash
Apr 4 Aeroflot Flight 25
Jun 3 Northwest Orient Airlines Flight 293
Jul 2 Mohawk Airlines Flight 112
Jul 3 NZ National Airways Flight 441
Jul 13 Aeroflot Flight 012
Jul 27 United Arab Airlines Flight 869
Aug 21 Aeroflot Flight 366
Aug 24 Aeroflot Flight 663
Sep 4 Swissair Flight 306
Oct 22 BAC One-Eleven test crash
Nov 8 Aero Flight 217
Nov 22 Poonch IAF helicopter crash
Nov 29 Trans-Canada Air Lines Flight 831
Dec 8 Pan Am Flight 214

1962 ◀ ▶ 1964

Aviation accidents and incidents in the Soviet Union and Russia

Soviet
Union

1930s	Osoaviakhim-1 SSSR-V6 Osoaviakhim
1940s	1948 Aeroflot Ilyushin Il-12 crash
1950s	1950 Sverdlovsk plane crash Aeroflot Flight 04 1958 Aeroflot Tu-104 Kanash crash Aeroflot Flight 315 (1959) Aeroflot Flight 120
1960s	Aeroflot Flight 315 (1960) Aeroflot Flight 207 Aeroflot Flight 036 Austrian Airlines Flight 901 Aeroflot Flight 068 Aeroflot Flight 245 Aeroflot Flight 902 Aeroflot Flight 415 Aeroflot Flight 213 (1962) Aeroflot Flight 191 Aeroflot Flight 03 Aeroflot Flight 25 Aeroflot Flight 012 Aeroflot Flight 366 Aeroflot Flight 663 Aeroflot Flight 721 Aeroflot Flight 101/X-20 Aeroflot Flight 542 Aeroflot Flight 513 Aeroflot Flight 99 Aeroflot Flight 065 Aeroflot Flight 2723 Aeroflot Flight 5003 (1967) Aeroflot Flight 2230 Aeroflot Flight L-51 Aeroflot Flight 15 1969 Yukhnov mid-air collision Aeroflot Flight N-826
1970s	Aeroflot Flight U-45 Aeroflot Flight 1661 Aeroflot Flight 3630 1971 January 22 Surgut Aeroflot Antonov An-12 crash 1971 January 31 Surgut Aeroflot Antonov An-12 crash 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 Air Lines Flight 446 Aeroflot Flight 6263 Aeroflot Flight 141 Aeroflot Flight 630 Balkan Bulgarian Airlines Flight 307 Aeroflot Flight 6551 Aeroflot Flight 109 Aeroflot Flight A-13 Aeroflot Flight 3932 Aeroflot Flight 964 Aeroflot Flight 19 Aeroflot Flight 2022 1974 Leningrad Aeroflot Il-18 crash 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 N-36 Aeroflot Flight 3843 Aeroflot Flight 5003 (1977) Aeroflot Flight 331 1977 Aeroflot Tupolev Tu-134 hijacking Aeroflot Flight B-2 Aeroflot Flight 6709 1978 Yegoryevsk Tu-144 crash 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 Korean Air Lines Flight 007 Aeroflot Flight 601 Aeroflot Flight 3352 Aeroflot Flight 3519 Aeroflot Flight 7841 1985 Zolochiv mid-air collision Aeroflot Flight 7425 Aeroflot Flight 101/435 Aeroflot Flight 2306 Aeroflot Flight 6502 Aeroflot Flight 892 Aeroflot Flight U-505 Aeroflot Flight N-528 Aeroflot Flight 699 Aeroflot Flight 3739 (1988)

Russia

1990s	Aeroflot Flight 2808 (1992) Sakha Avia Flight 301 (1993) Baikal Airlines Flight 130 (1994) Pulkovo Aviation Enterprise Flight 9045 (1994) Aeroflot Flight 593 (1994) Khabarovsk United Air Group Flight 3949 (1995) Stavropolskaya Aktsionernaya Avia Flight 1023 (1997) Irkutsk Antonov An-124 crash (1997)
2000s	Omsk An-70 crash (2001) Vladivostok Air Flight 352 (2001) Grozny Mi-8 crash (2001) Siberia Airlines Flight 1812 (2001) Armed Forces of the Russian Federation Flight 9064 (2001) Shelkovskaya Mi-8 crash (2002) Pulkovo Aviation Enterprise Flight 9560 (2002) Khankala Mi-26 crash (2002) Russian aircraft bombings (2004) Armavia Flight 967 (2006) S7 Airlines Flight 778 (2006) UTair Flight 471 (2007) Shatoy Mi-8 crash (2007) Moskovia Airlines Flight 9675 (2008) Aeroflot Flight 821 (2008) Makhachkala Il-76 collision (2009) Yakutia Ilyushin Il-76 crash (2009)
2010s	Aviastar-TU Flight 1906 (2010) Smolensk air disaster (2010) Katekavia Flight 9357 (2010) Alrosa Flight 514 (2010) Dagestan Airlines Flight 372 (2010) Kolavia Flight 348 (2011) Garbuzovo Antonov An-148 crash (2011) RusAir Flight 9605 (2011) Angara Airlines Flight 9007 (2011) Avis-Amur Flight 9209 (2011) 2011 Lokomotiv Yaroslavl plane crash (2011) UTair Flight 120 (2012) Petropavlovsk-Kamchatsky Air Flight 251 (2012) Red Wings Airlines Flight 9268 (2012) Polar Airlines Flight 9949 (2013) Tatarstan Airlines Flight 363 (2013) Unijet Flight 074P (2014) Flydubai Flight 981 (2016) Russian Ministry of Emergency Situations Il-76 crash (2016) Skol Airlines Flight 9375 (2016) Russian Defence Ministry Tupolev Tu-154 crash (2016) Khabarovsk Airlines Flight 463 (2017) Saratov Airlines Flight 703 (2018) UTair Flight 579 (2018) Aeroflot Flight 1492 (2019) Angara Airlines Flight 200 (2019) Ural Airlines Flight 178 (2019)
2020s	Volga-Dnepr Airlines Flight 4066 (2020) Kemerovo parachute Let L-410UVP-E crash (2021) Petropavlovsk-Kamchatsky Air Flight 251 (2021) Siberian Light Aviation Flight 42 (2021) Siberian Light Aviation Flight 51 (2021) Menzelinsk parachute Let L-410UVP-E crash (2021) Grodno Aviakompania Flight 1252 (2021)

This includes accidents and incidents in the Soviet Union, and Russia only. It does not include accidents in other post-Soviet states after the breakup of the Soviet Union.

На других языках

[de] Aeroflot-Flug 25

Am 4. April 1963 verunglückte eine Iljuschin Il-18 auf dem innersowjetischen Linienflug Aeroflot-Flug 25 von Moskau nach Krasnojarsk, wobei alle 67 Insassen, darunter auch der sowjetische Schachspieler Igor Georgijewitsch Rubel, starben.

- [en] Aeroflot Flight 25

[it] Volo Aeroflot 25

Il volo Aeroflot 25 era un volo di linea della Aeroflot operato il 4 aprile 1963 da un Ilyushin Il-18 tra l'aeroporto di Mosca-Šeremet'evo e l'aeroporto di Krasnojarsk-Emel'janovo. A causa di un guasto tecnico, l'Ilyushin si schiantò a terra, provocando la morte di tutte le 67 persone a bordo.[1]

[ru] Катастрофа Ил-18 под Казанью

Катастрофа Ил-18 под Казанью — авиационная катастрофа, произошедшая 4 апреля 1963 года в Татарской АССР в окрестностях Казани с самолётом Ил-18В авиакомпании Аэрофлот, в результате которой погибли 67 человек.

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