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Accident
Last updated: 17 October 2017
Status:Schlussbericht
Datum:Montag 3 März 1952
Zeit:08:10
Flugzeugtyp:SNCASE SE.161/P7 Languedoc
Fluggesellschaft:Air France
Kennzeichen: F-BCUM
Werknummer: 43
Baujahr: 1946
Triebwerk: 4 Pratt & Whitney R-1830
Besatzung:Todesopfer: 4 / Insassen: 4
Fluggäste:Todesopfer: 34 / Insassen: 34
Gesamt:Todesopfer: 38 / Insassen: 38
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:ca 1 km N of Nice-le Var Airport (NCE) (   Frankreich)
Flugphase: Anfangssteigflug (ICL)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Nice-le Var Airport (NCE/LFMN), Frankreich
Flug nach:Paris-Le Bourget Airport (LBG/LFPB), Frankreich
Unfallbericht:
Shortly after takeoff the aircraft was seen to turn to the left. The bank to the left increased progressively and shortly after, the aircraft turned on its back and crashed.

Probable Cause:

PROBABLE CAUSE: "It was decided that the unusual path of the aircraft immediately following the take-off, was due to the blocking of the ailerons to the left at an angle of approximately 10deg. It was determined on the basis of analysis that the probable cause of the blocking was the unclamping of a link cheek of the upper rear chain of the co-pilot's control column, as a result of which the chain slipped off the sprocket and jammed against the internal boss of the pin which locks the ailerons in the neutral position. More broadly, the investigation brought to light the difficulty of setting and inspecting the chains inside the dual control columns. This difficulty is directly attributable to the design, and may cause certain chains which have not been properly studied in relation to the type of service for which they are intended, to become unclamped by torsion during maintenance and setting work."



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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 Nice-le Var Airport to Paris-Le Bourget Airport as the crow flies is 690 km (431 miles).
Accident location: Approximate; accuracy within a few 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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SE161

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 Frankreich
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