Accident
Last updated: 23 May 2013
| Statuts: | Enquête Officielle |
| Date: | 19 JUN 1947 |
| Heure: | 01:40 |
| Type/Sous-type: | Lockheed L-049 Constellation |
| Compagnie: | Pan American World Airways |
| Immatriculation: | NC88845 |
| Numéro de série: | 2045 |
| Année de Fabrication: | 1946 |
| Heures de vol: | 2645 |
| Equipage: | victimes: 7 / à bord: 10 |
| Passagers: | victimes: 7 / à bord: 26 |
| Total: | victimes: 14 / à bord: 36 |
| Dégats de l'appareil: | Perte Totale |
| Conséquences: | Written off (damaged beyond repair) |
| Lieu de l'accident: | près de Mayadine (Syrie)
 |
| Phase de vol: | En vol (ENR) |
| Nature: | Transport de Passagers Intern. |
| Aéroport de départ: | Karachi International Airport (KHI/OPKC), Pakistan |
| Istanbul-Yesilköy Airport (IST/LTBA), Turquie | |
| Numéro de vol: | 121 |
The Constellation, named "Clipper Eclipse", was cruising at FL185 when the no. 1 prop had to be feathered due to engine problems. The remaining three engines overheated, forcing the crew to reduced power. This resulted in a gradual descent. The crew elected to continue to Istanbul instead of landing at the nearby Habbaniya RAF Station in Iraq. While descending through FL100 a fire broke out in the engine no. 2 nacelle. A rapid descent was started during which the no. 2 engine separated from the wing. With the left wing on fire a belly landing was carried out in the desert. It appeared the no. 1 engine failure was due to a broken exhaust rocker arm on the no.18 cylinder. The no. 2 engine failure was due to a failure of the thrust bearing which in turn resulted in blocking the passage of oil from the propeller feathering motor to the propeller dome.
PROBABLE CAUSE: "The Board determines that the probable cause of this accident was a fire which resulted from an attempt to feather the No. 2 propeller after the failure of the No. 2 engine thrust bearing." Sources:
» CAB Accident Investigation Report
Photos
Plan
Ce plan montre l'aéroport de départ ainsi que la supposé destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Karachi International Airport et Istanbul-Yesilköy Airport est de 3933 km (2458 miles).
La distance entre Karachi International Airport et Istanbul-Yesilköy Airport est de 3933 km (2458 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 tels qui sont connus à ce jour.
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Lockheed L-049
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