Aeroflot Flight 1661 - Event - avia.wikisort.org

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Aeroflot Flight 1661 was a passenger flight operated by an Antonov An-24 that crashed during its initial climb, 25 minutes after take-off from Tolmachevo Airport on 1 April 1970. All 45 people on board perished. An investigation revealed that the Antonov collided with a radiosonde, causing a loss of control.

Aeroflot Flight 1661
Accident
An Antonov An-24 similar to the accident aircraft
Date	1 April 1970 (1970-04-01)
Summary	Collision with weather balloon
Site	20 km southeast of Toguchin
Aircraft
Aircraft type	Antonov An-24B
Operator	Aeroflot
Registration	CCCP-47751
Flight origin	Tolmachevo Airport, Ob
Stopover	Yemelyanovo International Airport, Krasnoyarsk
Destination	Bratsk Airport
Occupants	45
Passengers	40
Crew	5
Fatalities	45
Survivors	0

Accident

Flight 1661 was a scheduled domestic flight from Novosibirsk to Bratsk, Russia, with an intermediate stop at Krasnoyarsk. At 03:42 local time the An-24 departed Tolmachevo Airport from runway 25 on a heading of 251°. Shortly after take-off, the aircraft made a turn to the left, and at 03:53 contacted air traffic control (ATC) and reported their altitude as 4,200 meters. They then received clearance to continue climbing to 6,000 meters. At 04:10 ATC attempted to contact flight 1661, but no further transmissions from the Antonov were received. The crashed aircraft was found in a field approximately 142 km from Tolmachevo Airport; there were no survivors. Among the victims were the members of a youth ice hockey team, who were flying to a game.[1]

Aircraft

The Antonov An-24 involved was serial numbered 79901204 and registered as CCCP-47751 to Aeroflot. The airliner was built in 1967, and had compiled 3,975 flight hours with 3,832 take-off and landing cycles at the time of the crash.[2][1][3]

Investigation

Investigators examining the crash site discovered unusual damage to the aircraft's radome and nose structure, and noticed that a substantial portion of the windshield was missing. Also found among the wreckage were parts of two radiosondes of the type then being used by the Federal Service for Hydrometeorology and Environmental Monitoring of Russia for the monitoring of meteorological conditions. Investigators also discovered parts of the aircraft's nose cone six km away from the main crash site; these components displayed evidence of collision with a solid object. Officials concluded that the accident was caused by a collision in flight with a foreign object: the radiosonde/balloon assembly.[2]

The investigation concluded that the aircraft's nose cone collided with a radiosonde, at a distance of 131 km from Tolmachevo, while ascending through 5,400 meters. The collision destroyed the aircraft's weather radar and damaged the cockpit. Out of control, the Antonov nosed over and began to descend rapidly. At an altitude of 2,000 meters and a speed of 700 km/h, the wing and horizontal stabilizer separated from the aircraft due to aerodynamic forces well beyond the plane's design limits. The fuselage then continued 2.5 km before striking the ground at 300 km/h and a vertical speed of 60 m/sec. The flight lasted 25 minutes, 25 seconds.[2][1][3]

References

"Accident description Wednesday 1 April 1970". aviation-safety.net. Retrieved 2018-07-21.
"An-24B catastrophe of the West-Siberian UGA in the Toguchin area". airdisaster.ru (in Russian). Retrieved 2018-07-21.
"Accident Details April 1, 1970". planecrashinfo.com. Retrieved 2018-07-21.

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 1970

Jan 5 Spantax Convair crash
Feb 2 Cornfield Bomber crash landing
Feb 4 Aerolineas Argentinas Flight 707
Feb 6 Aeroflot Flight U-45
Feb 15 Dominicana DC-9 disaster
Feb 21 Swissair Flight 330
Mar 17 Eastern Air Lines Shuttle Flight 1320
Mar 31 Japan Airlines Flight 351
Apr 1 Aeroflot Flight 1661
Apr 21 Philippine Airlines Flight 215
May 2 ALM Flight 980
May 15 Dymshits–Kuznetsov hijacking affair
Jul 3 Dan-Air Flight 1903
Jul 5 Air Canada Flight 621
Jul 18 Soviet Air Force Antonov An-22
Aug 9 LANSA Flight 502
Aug 12 China Airlines Flight 206
Sep 2 Aeroflot Flight 3630
Sep 6 El Al Flight 219
Sep 6 TWA Flight 741
Sep 6 Swissair Flight 100
Sep 6 Pan Am Flight 93
Sep 9 BOAC Flight 775
Sep 8 Trans International Airlines Flight 863
Sep 26 Icelandair Flugfélag Islands Flight 704
Oct 2 Wichita State Univ football team
Oct 15 Aeroflot Flight 244
Nov 14 Southern Airways Flight 932
Nov 27 Capitol International Airways Flight C2C3/26

1969 ◀ ▶ 1971

Aviation accidents and incidents in the Soviet Union and Russia

Soviet
Union

1930s	Osoaviakhim-1 SSSR-V6 Osoaviakhim
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 1661

Am 1. April 1970 verunglückte eine 3 Jahre alte Antonow An-24B auf dem innersowjetischen Linienflug Aeroflot-Flug 1661 von Nowosibirsk über Krasnojarsk nach Bratsk auf dem ersten Abschnitt, wobei alle 45 Insassen starben.

- [en] Aeroflot Flight 1661

[it] Volo Aeroflot 1661

Il volo Aeroflot 1661 era un volo passeggeri operato da un Antonov An-24 che si schiantò durante la sua salita iniziale, 25 minuti dopo il decollo dall'aeroporto di Tolmachevo, il 1 aprile 1970. Morirono tutte le 45 persone a bordo. Un'indagine rivelò che l'Antonov si era scontrato con una radiosonda, che provocò la perdita di controllo del velivolo.

[ru] Катастрофа Ан-24 под Новосибирском

Катастрофа Ан-24 под Новосибирском — авиационная катастрофа, произошедшая 1 апреля 1970 года в Новосибирской области с самолётом Ан-24Б авиакомпании Аэрофлот, в результате которой погибли 45 человек.

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