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Last updated: 8 December 2021
Status:
Datum:Samstag 6 Januar 1968
Zeit:18:27
Flugzeugtyp:Silhouette image of generic AN24 model; specific model in this crash may look slightly different
Antonow An-24B
Fluggesellschaft:Aeroflot, Yakutsk Civil Aviation Directorate
Kennzeichen: CCCP-47733
Werknummer: 69901001
Baujahr: 1966
Betriebsstunden:1543
Anzahl Zyklen der Zelle:1083
Besatzung:Todesopfer: 6 / Insassen: 6
Fluggäste:Todesopfer: 39 / Insassen: 39
Gesamt:Todesopfer: 45 / Insassen: 45
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:92 km (57.5 Meilen) W of Olyokminsk (   Russland)
Flugphase: Während des Fluges (ENR)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Olyokminsk Airport (OLZ/UEMO), Russland
Flug nach:Lensk Airport (ULK/UERL), Russland
Flugnummer:1668
Unfallbericht:
Aeroflot flight 1668, an Antonov An-24B, performed a regular flight from Yakutsk to Novosibirsk intermediate stops in Olyokminsk, Lensk, Ust-Kut and Krasnoyarsk. In Olyokminsk, the flight landed at 17:50 and took off at 18:10.
At 18:20 the crew reported that the assigned flight level of 4500 m had been reached. Weather conditions along the route were favorable. At 18:28 the aircraft disappeared from the controller's radar screen.
It was found to have crashed and broken up in the taiga, 92 km from Olyokminsk.

Probable Cause:

Presumable causes of the crash are:
1) due to unexplained circumstances, the aircraft went into flight modes that significantly exceed the maximum speed and overload limits;
2) separation from the aircraft of any part or parts, the impact of which caused the destruction of structural elements, presumably in the tail section;
3) a complex failure in the propeller-regulator-engine system, which led to a a loss of control with the subsequent destruction of the aircraft structure;
4) any failure in the aircraft control system.

Informationsquelle:
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Olyokminsk Airport to Lensk Airport as the crow flies is 308 km (193 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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