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Last updated: 20 April 2021
Statuts:Enquête Officielle
Date:vendredi 22 juin 1951
Heure:03:25 UTC
Type/Sous-type:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed L-049 Constellation
Compagnie:Pan American World Airways (Pan Am)
Immatriculation: N88846
Numéro de série: 2046
Année de Fabrication:
Heures de vol:13343
Moteurs: 4 Wright R-3350 (745C18BA3) Cyclone
Equipage:victimes: 9 / à bord: 9
Passagers:victimes: 31 / à bord: 31
Total:victimes: 40 / à bord: 40
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:4 km (2.5 milles) W of Sanoyea (   Libéria)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Intern.
Aéroport de départ:Accra-Kotoka Airport (ACC/DGAA), Ghâna
Aéroport de destination:Monrovia-Roberts International Airport (ROB/GLRB), Libéria
Détails:
Pan American's Flight 151 departed Johannesburg for New York. At 08:12, June 21, after a routine flight and scheduled stop at Leopoldville "Clipper Great Republic" arrived at Accra at 21:25. Following a mechanical delay which required the changing of several spark plugs and a set of magneto points, the flight was dispatched and cleared to Monrovia, on an instrument flight plan at 16,500 feet with Dakar. Takeoff from Accra was at 23:52Z and the flight climbed to en route altitude. At 02:20 Flight 151 requested clearance to descend. Roberts Field radio cleared the flight to descend to 3,000 feet. Five minutes later the flight was cleared by the tower controller to descend IFR over Roberts Range Station, and indicated that runway 05 was in use. At 02:37 Flight 151 was again given local weather for Roberts Field: cloud base estimated 1,000 feet, broken, light drizzle and haze, visibility 3 miles. At 02:55, nine minutes after its ETA, Flight 151 was heard calling Roberts Field. The tower responded but there was no indication that the aircraft heard the tower. Six minutes later contact was established on another frequency. The flight reported that the Dakar radio beacon was interfering with the Roberts Field radio beacon and that they would "be back in 15 minutes". At 03:15 the crew were given another weather report; this was the last radio contact with the flight. In an area where cloud bases were probably down to near the hilltops, the flight descended into a hill at 1050 feet msl and crashed.

Probable Cause:

PROBABLE CAUSE: "The Board determines that the probable cause of this accident was the action of the captain in descending below his en route minimum altitude without positive identification of the flight's position."

Sources:
» CAB File No. 1-0053
» ICAO Aircraft Accident Digest No.2, Circular 24-AN/21 (107-110)


Photos

photo of Lockheed-L-049-Constellation-N88846
accident date: 22-06-1951
type: Lockheed L-049 Constellation
registration: N88846
 

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 Accra-Kotoka Airport et Monrovia-Roberts International Airport est de 1124 km (703 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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Lockheed L-049

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 Libéria
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