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Last updated: 26 June 2019
Statuts:Enquête Officielle
Date:jeudi 29 juillet 1999
Heure:15:00
Type/Sous-type:Silhouette image of generic B742 model; specific model in this crash may look slightly different
Boeing 747-269B
Compagnie:Kitty Hawk International
Immatriculation: N707CK
Numéro de série: 21541/332
Année de Fabrication: 1978-07-17 (21 years )
Heures de vol:59727
Moteurs: 4 Pratt & Whitney JT9D-7J
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 5
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:près de Anchorage International Airport, AK (ANC) (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Cargo
Aéroport de départ:Anchorage International Airport, AK (ANC/PANC), Etats-Unis d'Amérique
Aéroport de destination:Bangkok-Don Muang International Airport (BKK/VTBD), Thaïlande
Détails:
A Boeing 747-269B airplane, N707CK, had an uncontained engine failure during climb-out from the Anchorage International Airport, Alaska. There were no injuries to the five crewmembers aboard.
During climbout, the Boeing 747 crew noted a loud 'thump,' followed by a change in the number three engine instrument indications. One crewmember noted there was a fist-sized hole in the side of the engine cowling. The captain shut down the number three engine, returned to the departure airport, and landed without further incident. A post landing inspection revealed that the inboard aileron sustained substantial damage.

Probable Cause:

PROBABLE CAUSE: "The failure of a turbine blade, and subsequent penetration of the shroud (containment ring). A factor associated with the accident was the FAA's insufficient design standards/requirements addressed in an FAA Airworthiness Directive, which called for a strengthened containment ring. The failed containment ring was in compliance with the Air Worthiness Directive."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years
Accident number: ANC99LA099
Download report: Summary report

Sources:
» NTSB id 20001212X19142


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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 Anchorage International Airport, AK et Bangkok-Don Muang International Airport est de 9582 km (5989 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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