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Last updated: 2 December 2021
Statuts:
Date:mercredi 6 novembre 1957
Heure:11:35
Type/Sous-type:Silhouette image of generic C46 model; specific model in this crash may look slightly different
Curtiss C-46A-50-CU Commando
Compagnie:Aerovias Sud Americana
Immatriculation: N10425
Numéro de série: 30525
Année de Fabrication: 1944
Moteurs: 2 Pratt & Whitney R-2800-51
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 2
Victimes au sol:victimes: 2
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Guatemala City (   Guatémala)
Phase de vol: Inconnu (UNK)
Nature:Cargo
Aéroport de départ:Guatemala City-La Aurora Airport (GUA/MGGT), Guatémala
Aéroport de destination:Belize City Municipal Airport (TZA), Bélize
Détails:
Curtiss N10425 took off from Guatemala City runway 01 at 11:18. Takeoff was uneventful and the aircraft climbed on a 5deg heading at 120 knots airspeed. At 11:25, while climbing through about 3000 feet agl (8000 feet asl) the no. 1 engine oil temperature reached 102deg C and the oil pressure dropped to 50 lb with the no. 1 engine backfiring a little later. Engine power was reduced to 1800rpm and power set to 30inches manifold pressure. The co-pilot requested a landing clearance for Guatemala City runway 19. Several minutes later the engine quit, forcing the crew to feather the prop. METO power and even takeoff power on the remaining engine couldn't prevent the aircraft from losing altitude. Descending through 1000 feet it became impossible to reach the airport; the crew prepared for a forced landing. At 200 feet altitude power on the no. 2 engine was reduced, but children were playing in the area made it impossible to land immediately. The flaps were extended and the crew decided to attempt a landing on a highway to avoid some houses. When the plane approached people were seen running toward the highway, so a landing between the highway and the houses was attempted. The aircraft struck power lines and trees and crashed into a residence, killing two people on the ground and injuring 3.
It appeared that the no. 1 engine had probably failed due to a fatigue failure of the engine's crankshaft.
PROBABLE CAUSE: "Inability of the aircraft to maintain single engine flight for reasons undetermined after failure of the other engine."

Sources:
» ICAO Accident Digest No.9, Circular 56-AN/51 (219-223)


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Plan
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 Guatemala City-La Aurora Airport et Belize City Municipal Airport est de 408 km (255 miles).

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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