Aeroflot Flight 1668
Antonov An-24B · Loss of control for reasons unknown, possible structural failure or an aircraft flight control system failed
From Platon Oyunsky Yakutsk International Airport (YKS) to Novosibirsk Tolmachevo Airport (OVB)
Event
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- Event fatalities
- 45 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- Unknown
- Survivors
- 0
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
Antonov An-24B
- Aircraft type
- Antonov AN-24
- Category
- Airplane · from aircraft type
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- CCCP-47733
- Operator
- Aeroflot
- Onboard fatalities
- 45
- Route
- From Platon Oyunsky Yakutsk International Airport (YKS)To Novosibirsk Tolmachevo Airport (OVB)
Cause areas
- Not determined › Not determined
From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.
Not plotted · Not plotted: the Wikipedia article gives no coordinates, and its site names no town or airport that matches exactly.
From the Wikipedia article
Aeroflot Flight 1668 was a scheduled flight from Yakutsk to Novosibirsk with stopovers at Olekminsk, Lensk, Ust-Kut and Krasnoyarsk that crashed shortly after take-off from Olekminsk on 6 January 1968. All 45 people on board died. The subsequent investigation was unable to determine the root cause of the accident.
Accident
At 18:10 local time the flight departed Olyokminsk bound for Lensk in good weather conditions. Ten minutes later the crew contacted air traffic control (ATC) and reported their altitude as 4,500 meters. At 18:24 the flight requested a position report and ATC responded that radar showed the aircraft 75 kilometers from Olyokminsk on a heading of 271 degrees. At 18:28 radar contact with the aircraft was lost and attempts to communicate with the flight by radio were unsuccessful. Three hours and 22 minutes later the crew of an Antonov An-2 flying west of Olekminsk discovered several fires burning on the ground. Helicopters sent to investigate discovered the crash site. The next day at 16:00 search teams reached the wreckage of flight 1668. There were no survivors.
Investigation and cause
Investigation
The accident was investigated by the State Supervisory Commission for Flight Safety. Concerns about crew training, preflight preparation of the aircraft and ATC operation were eliminated early in the investigation. The agency compiled data from ATC including recorded radio transmissions and radar plots in an attempt to determine the cause. Two minutes before the flight disappeared from radar the sound of a transmitter being switched on was heard. The source of this transmitter sound was never determined. Investigators discovered that the aircraft suddenly entered a steep descent followed by both wings and the empennage separating from the fuselage due to high aerodynamic loads. At about 18:27 the airliner was in an 80 degree nose down attitude on a heading of 270 with a left bank. The aircraft struck trees then crashed into the ground heavily and was completely destroyed by impact forces and fire.
Investigations were unable to determine the exact cause of the accident but it was theorized that a part of the aircraft detached and damaged the tail or that an aircraft flight control system failed. Another theory was that the flight was brought down by a surface-to-air missile, but no evidence supporting this ever surfaced.
Text from the Wikipedia article “Aeroflot Flight 1668” (revision 1339297306, retrieved 2026-09-18) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out. Read the article
Sources
Wikipedia article: Aeroflot Flight 1668
- Article
- Aeroflot Flight 1668
- Revision
- 1339297306 · 2026-02-19 · retrieved 2026-09-18
- Wikidata
- Q16662381
- Licence
- Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
- Record
- Wikipedia article "Aeroflot Flight 1668" (page 58278418, revision 1339297306)
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site
- Map position
- none
- Aircraft, operator and route
- Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
- Operation
- flight number in the article title
- Fatalities
- Wikipedia infobox: aircraft fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia infobox: summary
Source notes (1)
- Wikipedia · Facts from the Wikipedia article's infobox and coordinates, not checked against an investigation report. Independent review pending.