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Last updated: 25 July 2021
Date:mardi 25 mai 1971
Type/Sous-type:Silhouette image of generic C46 model; specific model in this crash may look slightly different
Curtiss C-46F Commando
Compagnie:Aerolineas Flecha Austral - ALFA
Immatriculation: CC-CAZ
Numéro de série: 50
Année de Fabrication: 1944
Moteurs: 2 Pratt & Whitney R-2800-51M1
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 1 / à bord: 1
Total:victimes: 4 / à bord: 4
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:2 km (1.3 milles) SSE of Santiago-Los Cerrillos Airport (ULC) (   Chili)
Phase de vol: En montée initiale (ICL)
Aéroport de départ:Santiago-Los Cerrillos Airport (ULC/SCTI), Chili
Aéroport de destination:Arica-Chacalluta Airport (ARI/SCAR), Chili
The Curtiss C-46 cargo plane was destroyed when it crashed shortly after takeoff from runway 03 at Santiago-Los Cerrillos Airport (ULC), Chile. The no. 2 engine failed immediately after takeoff and the airplane was not able to climb to a safe height. It crashed and broke up.

Probable Cause:

From the analysis of the accident the following was concluded (translated from Spanish):
1) The aircraft could have taken more load than specified in the loading manifest document and before the engine failure, the other engine operating at full power, was unable to maintain the minimum control speed with one engine and low height. For that reason, it might have been necessary for the pilot to lose height during the turn to maintain control of the airplane.
2) The airplane could have been loaded correctly as specified in the documents and having a failure of the right engine (which was reported by the pilot of the aircraft to request permission to land). While the pilot effected a maneuver to turn back to the runway, the other engine could have failed, but it was not possible to verify this because of the state of destruction of the engines.
3) The aircraft could have taken off without the operational load limits but with the right engine stopped and the other running at full speed, the pilot could have slowed down under the minimum control speed with one engine, which would result in a loss of control and impact with terrain.
None of the three possibilities could be investigated for lack of evidence.

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Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Santiago-Los Cerrillos Airport et Arica-Chacalluta Airport est de 1679 km (1050 miles).
Accident location: Approximate; accuracy within a few kilometers.

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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