Accident
Last updated: 25 October 2014
Statuts:Enquête Officielle
Date:jeudi 18 décembre 2003
Heure:12:26
Type/Sous-type:McDonnell Douglas MD-10F
Compagnie:FedEx Express
Immatriculation: N364FE
Numéro de série: 46600/4
Année de Fabrication: 1971
Heures de vol:65375
Cycles:26163
Moteurs: 3 General Electric CF6-6D
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 5
Total:victimes: 0 / à bord: 7
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Memphis International Airport, TN (MEM) (   Etats-Unis d'Amérique) show on map
Élévation des lieux de l'accident: 104 m (341 feet) amsl
Phase de vol: A l'atterrissage (LDG)
Nature:Cargo
Aéroport de départ:Oakland International Airport, CA (OAK/KOAK), Etats-Unis d'Amérique
Aéroport de destination:Memphis International Airport, TN (MEM/KMEM), Etats-Unis d'Amérique
Numéro de vol: 647
Détails:
FedEx flight 647 departed Oakland at 06:32 PST for a cargo flight to Memphis. The first officer was the pilot flying on that leg. The captain of the flight was a company check airman who was conducting a multi-leg line check for the first officer. The flight was routine until the approach to Memphis.
At 12:06 the captain contacted Memphis Approach. He was told to expect an approach to runway 36L. After listening out the ATIS, the captain advised the first officer that the winds were out of "three twenty at sixteen gusts to twenty two. Ten miles [visibility]. It's still saying wind shear."
At 12:15 Memphis Approach informed the flight that they should expect to land on runway 36R instead of 36L, as previously instructed. Six minutes later the captain radioed that they had the airport in sight. The controller cleared them for a visual approach and instructed the captain to contact Memphis Tower. The tower controller stated: "FedEx six forty seven heavy, Memphis tower, number two following a heavy Airbus two mile final caution wake turbulence runway three six right. Gain and loss of ten [knots] short final runway three six right, cleared to land."
The airplane was configured for landing and the crew discussed adding 4 knots to the Vref speed.
A single tailwind shear alert sounded about 12:23:52. Moments later the airplane descended through 1000 feet. The captain confirmed the approach was stable and the approach to land was continued.
During the 20 seconds before touchdown, the airplane's descent rate was 12.5 feet per second (fps) with +/- 2.5-fps oscillations. At 12:25:52, the airplane's left main landing gear touched down at a rate of about 12.5 fps; about 0.25 second later, the right main landing gear touched down at a rate of about 14.5 fps. The MD-10 landing gear is designed to be capable of absorbing energy that is equivalent to a maximum airplane descent rate of 12 fps.
The excessive vertical and lateral forces on the right main landing gear during the landing exceeded those design limits and resulted in the fracture of the outer cylinder and the collapse of the right main landing gear. The airplane began to bank and turn to the right. The crew were unable to steer the airplane back to the left and it skidded off the right side of the runway and came to a stop in the grass. Shortly after coming to a stop there was an explosion and a fire developed on the right side to the airplane. All seven occupants were able to successfully evacuate the airplane using the cockpit windows.


PROBABLE CAUSE: "1) the first officer’s failure to properly apply crosswind landing techniques to align the airplane with the runway centerline and to properly arrest the airplane’s descent rate (flare) before the airplane touched down; and 2) the captain’s failure to adequately monitor the first officer’s performance and command or initiate corrective action during the final approach and landing."

Sources:
» NTSB

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB AAR-05-01
report released:17-MAY-2005
duration of investigation:516 days (1 year 5 months)
download report: Hard Landing, Gear Collapse Federal Express Flight 647, Boeing MD-10-10F, N364FE, Memphis, Tennessee December 18, 2003 (NTSB AAR-05-01)

Opérations de secours

NTSB issued 5 Safety Recommendations

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Photos

photo of McDonnell Douglas MD-10F N364FE
photo of McDonnell Douglas MD-10F N364FE
photo of McDonnell Douglas MD-10F N364FE
photo of McDonnell Douglas MD-10F N364FE
photo of McDonnell Douglas MD-10F N1801U
After a period of storage, FedEx bought this former United DC-10 and converted it to a cargo MD-10.
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Video/animation

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 Oakland International Airport, CA et Memphis International Airport, TN est de 2868 km (1793 miles).

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