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Statuts:Enquête Officielle
Date:samedi 7 août 1999
Heure:13:45
Type/Sous-type:Silhouette image of generic DC10 model; specific model in this crash may look slightly different
McDonnell Douglas DC-10-10F
Compagnie:FedEx
Immatriculation: N68058
Numéro de série: 46705/33
Année de Fabrication: 1972-03-09 (27 years 5 months)
Heures de vol:40552
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 0 / à bord: 2
Total:victimes: 0 / à bord: 5
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Memphis International Airport, TN (MEM (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Cargo
Aéroport de départ:Los Angeles International Airport, CA (LAX/KLAX), Etats-Unis d'Amérique
Aéroport de destination:Memphis International Airport, TN (MEM/KMEM), Etats-Unis d'Amérique
Numéro de vol:FX3206
Détails:
A McDonnell Douglas DC-10-10F, N68058, experienced separation of the left inboard trailing edge flap and flap vane while on final approach to land at the Memphis International Airport, Tennessee.
The first officer was flying the airplane, and while executing a Category IIIB approach to runway 18L in VMC with the flaps fully extended, a loud "jolt" was heard. The autopilot was disconnected and the first officer reported having to use 1/2 to 3/4 right aileron input to counter the left banking tendency.
He continued the approach and landed. firm with less "controllability", but the rollout was normal.
Examination of the airplane by FAA personnel revealed that the left inboard trailing edge flap and vane separated from the airplane. The separated left inboard trailing edge flap and vane were found in a residential area approximately 4 miles north of the airport. The vane was noted to be missing an approximate 2-foot segment, which was found several days after the accident about 1 block from where the flap and vane were found. Further examination of the airplane revealed that the four bolts of the forward attach point of the outboard hinge of the left inboard trailing edge flap, were failed.

Probable Cause:

PROBABLE CAUSE: "The inadequate design by the airplane manufacturer for using bolts to secure the inboard trailing edge flap that are susceptible to stress corrosion cracking. Also, the stress corrosion cracking failure of the four H-11 bolts that secure the left inboard trailing edge flap to the outboard hinge which allowed the separation of the flap and vane while on final approach."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 9 months
Accident number: MIA99LA220
Download report: Summary report
Language: English

Sources:
» NTSB


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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 Los Angeles International Airport, CA et Memphis International Airport, TN est de 2583 km (1614 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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