Crash-aerien 08 MAY 2009 d'un Boeing 747-48EF HL7419 - Frankfurt International Airport (FRA)
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Statuts:Accident investigation report completed and information captured
Date:vendredi 8 mai 2009
Type/Sous-type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-48EF
Compagnie:Asiana Airlines
Immatriculation: HL7419
Numéro de série: 25781/1044
Année de Fabrication: 1994-10-13 (14 years 7 months)
Heures de vol:72700
Moteurs: 4 General Electric CF6-80C2B1F
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 3
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:près de Frankfurt International Airport (FRA) (   Allemagne)
Phase de vol: En approche (APR)
Aéroport de départ:Wien-Schwechat International Airport (VIE/LOWW), Autriche
Aéroport de destination:Frankfurt International Airport (FRA/EDDF), Allemagne
The Boeing 747-48EF cargo plane was on approach to runway 25L at Frankfurt International Airport, Germany. In the area of the outer marker to runway 25L at a height of 1400 ft AMSL the landing flaps were moved to the 30° position. The approach speed at this time was 160 kt (IAS). Shortly after actuating the flap lever, the crew heard an impact sound and noticed vibrations. The plane rolled about 1° to the left. The autopilot levelled out the incline and the aircraft continued its approach. The landing was without further problems on runway 25L. The aircraft then rolled to the parking position.
It appeared a part of the left wing flap (Inboard Fore Flap) with dimensions of about 4.5 x 1 m was missing. The fracture was about half a metre to the left of the inner flap attachment. The remaining flap piece was twisted around the inner attachment point and was jammed between the attachment and the fuselage. Two connecting rods between of the front and middle landing flaps were broken or torn out.
The outer fuselage skin of the aircraft was penetrated in the area between the fairing outlet and the rear cargo door over a length of 3.5 m. In this area, the ribs showed heavy damage.

The missing flap part was located in a forest on December 12, 2009.

Probable Cause:

Conclusions: "The flap fitting was destroyed by a pronounced vibration fracture, which probably originated in a corrosion cavity ."

Accident investigation:

Investigating agency: BFU Germany
Status: Investigation completed
Duration: 8 years and 11 months
Accident number: BFU AX001-09
Download report: Final report

Opérations de secours

BFU issued 2 Safety Recommendations

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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 Wien-Schwechat International Airport et Frankfurt International Airport est de 618 km (386 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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