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Datum:Montag 6 Juli 1953
Flugzeugtyp:Silhouette image of generic DC3 model; specific model in this crash may look slightly different
Lisunow Li-2
Fluggesellschaft:Aeroflot / Tajikistan
Kennzeichen: CCCP-L4027
Werknummer: 18429905
Baujahr: 1948
Besatzung:Todesopfer: 4 / Insassen: 4
Fluggäste:Todesopfer: 3 / Insassen: 3
Gesamt:Todesopfer: 7 / Insassen: 7
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:15 km (9.4 Meilen) NW of Rushan (   Tadschikistan)
Flugphase: Während des Fluges (ENR)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Khorog Airport (UTOD), Tadschikistan
Flug nach:Stalinabad Airport (DYU/UTDD), Tadschikistan
The Li-2 operated on a flight from Khorog to Stalinabad (now Dushanbe). The pilot deviated from the prescribed flight path when approaching the Yauza pass (4,885 metres) and observing clouds in the gorge.
While flying 15 km north-west of Rushan it got caught by a strong katabatic wind and crashed some 75-100 metres below the ridge into the southern slope of the pass.

Probable Cause:

The immediate cause of the crash is a collision with a rock due to insufficient flight altitude in mountainous terrain and an unexpected drop in altitude of the aircraft in downdrafts.
The main cause of the disaster is the wrong decision by the crew commander to change the established flight route in the mountainous area in the difficult situation.
Accompanying reasons - discrepancy between flight data of Li-2 aircraft to flight conditions on high-mountain routes (low practical ceiling, insufficient rate of climb when flying above 3000 m); lack of instructions for flights on Li-2 aircraft along this route.



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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 Khorog Airport to Stalinabad Airport as the crow flies is 261 km (163 miles).
Accident location: Exact; as reported in the official accident report.

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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