Incident
Last updated: 17 April 2014
Statuts:Enquête Officielle
Date:mercredi 31 janvier 2001
Heure:15:55
Type/Sous-type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-446D
Compagnie:Japan Air Lines - JAL
Immatriculation: JA8904
Numéro de série: 26348/941
Année de Fabrication: 1992-10-01 (8 years 4 months)
Moteurs: 4 General Electric CF6-80C2B1F
Equipage:victimes: 0 / à bord: 16
Passagers:victimes: 0 / à bord: 411
Total:victimes: 0 / à bord: 427
Dégats de l'appareil: Aucun
Lieu de l'accident:de Shizuoka Prefecture (   Japon)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Tokyo-Haneda Airport (HND/RJTT), Japon
Aéroport de destination:Okinawa-Naha Airport (OKA/ROAH), Japon
Numéro de vol: 907
Détails:
On Jan. 31, 2001, JAL flight 907, a Boeing 747 had departed Tokyo-Haneda (HND) for a flight with destination Naha (OKA). JAL Flight 958, a DC-10-40 was en route from Pusan (PUS) to Tokyo-Narita (NRT). A trainee controller cleared flight 907 to climb to Flight Lever 390 at 15:46. Two minutes later JL958 reported at FL370. Both flights were on an intersecting course near the Yaizu NDB. At 15:54 the controller noticed this, but instead of ordering flight 958 to descend, he ordered the Boeing 747 to descend: "Japan air niner zero seven, descend and maintain flight level three five zero, begin descent due to traffic." Immediately after this instruction, the crew of flight 907 were given an aural TCAS Resolution Advisory to climb in order to avoid a collision. At the same time the crew of flight 958 were given an aural TCAS Resolution Advisory to descend. The captain of flight 907 followed the instructions of the air traffic controller by descending. The 747 now approaching close to Flight 958, because the DC-10 captain descended as well, following the advisory of his TCAS. A collision was averted when the pilot of flight 907 then put his Boeing 747 into a nosedive. The 747 missed the DC-10 by 105 to 165 meters in lateral distance and 20 to 60 meters in altitude difference. About 100 crew and passengers on flight 907 sustained injuries due to emergency manoevre, while no one was injured on Flight 958. Flight 958 continued to Narita, while flight 907 returned to Haneda Airport.

PROBABLE CAUSE: The Aircraft and Railway Accident Investigation Commission concluded that air traffic control's error in giving the wrong flight numbers when asking the pilots to change course and the pilots' decision to follow air traffic control instead of the computerized Traffic Alert and Collision Avoidance System (TCAS) were two of the main causes.

Sources:
» Aircraft and Railway Accident Investigation Commission (ARAIC) final report number 02-5
» Kyodo


Opérations de secours
The commission recommended a.o. that the International Civil Aviation Organization (ICAO) put priority on computer orders over instructions from controllers to prevent similar incidents.

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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 Tokyo-Haneda Airport et Okinawa-Naha Airport est de 1544 km (965 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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