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Last updated: 20 September 2021
Datum:dinsdag 25 mei 1971
Type:Silhouette image of generic C46 model; specific model in this crash may look slightly different
Curtiss C-46F Commando
Luchtvaartmaatschappij:Aerolineas Flecha Austral - ALFA
Registratie: CC-CAZ
Constructienummer: 50
Bouwjaar: 1944
Motoren: 2 Pratt & Whitney R-2800-51M1
Bemanning:slachtoffers: 3 / inzittenden: 3
Passagiers:slachtoffers: 1 / inzittenden: 1
Totaal:slachtoffers: 4 / inzittenden: 4
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:2 km (1.3 mijl) SSE of Santiago-Los Cerrillos Airport (ULC) (   Chili)
Fase: Initiële klim (ICL)
Soort vlucht:Vracht
Vliegveld van vertrek:Santiago-Los Cerrillos Airport (ULC/SCTI), Chili
Vliegveld van aankomst: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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Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Santiago-Los Cerrillos Airport en Arica-Chacalluta Airport bedraagt 1679 km (1050 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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