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Last updated: 15 August 2020
Statuts:Enquête Officielle
Date:dimanche 18 mars 1979
Heure:02:22
Type/Sous-type:Silhouette image of generic B742 model; specific model in this crash may look slightly different
Boeing 747-246F (SCD)
Compagnie:Japan Air Lines - JAL
Immatriculation: JA8123
Numéro de série: 21034/243
Année de Fabrication: 1974-08-02 (4 years 8 months)
Moteurs: 4 Pratt & Whitney JT9D-7R4G2
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 3
Dégats de l'appareil: Mineurs
Conséquences: Repaired
Lieu de l'accident:København-Kastrup Airport (CPH) (   Danemark)
Phase de vol: Au roulage (TXI)
Nature:Cargo
Aéroport de départ:Anchorage International Airport, AK (ANC/PANC), Etats-Unis d'Amérique
Aéroport de destination:København-Kastrup Airport (CPH/EKCH), Danemark
Numéro de vol:JL625
Détails:
JAL flight 625 was a scheduled international cargo flight from Anchorage, Alaska, USA to Frankfurt, Germany with a stop in Copenhagen, Denmark for refueling and crew change. The aircraft landed on runway 04L at 02:15 hours.
The taxiways and aprons at Copenhagen were covered with approximately 1-2 inches of loose snow with reported braking action poor. When the captain entered the apron area there was no guide line visible and taxispeed was reduced to 10 kts. Part of the apron along finger C had been cleaned for loose snow and a snow bank more or less parallel to finger C and 12-14 inches high appeared when JL625 approached the apron. The captain decided to keep the right wing gear tracking on the left side of the snow bank due to a parked DC-10 at gate 32 at the finger on his right side. Taxiing on the apron he noticed three lightmasts and judged the clearance for the left wingtip to be sufficient. He continued straight ahead close to the snowbank and when approaching gate 30 a right turn was initiated for docking. A small jolt which was thought to be the right gear boogie having encountered the snowbank was felt in the aircraft and it stopped.
According to the captain's statement he was then marshalled to continue the right turn towards the gate. But it was not possible to continue even when adding power. He then observed that the left wing had contacted and turned over a lightmast. That mast was a No. 4 in the row of previous mentioned masts noticed by the captain. It was not aligned with no. 2 and 3 mast but closer to finger C. The captain was not aware of this no. 4 mast.

Probable Cause:

Cause of the Accident: "The cause of the accident was that JA 8123 was directed to and the PIC accepted to taxi on an apron with a snowbank and without a visible guideline."

Sources:
» Aircraft Accident Report AIG/04/79


Opérations de secours

DAI issued 1 Safety Recommendation

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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 København-Kastrup Airport est de 6887 km (4304 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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