Vliegtuigongeval op 08 MAY 2009 met Boeing 747-48EF HL7419 - Frankfurt International Airport (FRA)
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Status:Accident investigation report completed and information captured
Datum:vrijdag 8 mei 2009
Type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-48EF
Luchtvaartmaatschappij:Asiana Airlines
Registratie: HL7419
Constructienummer: 25781/1044
Bouwjaar: 1994-10-13 (14 years 7 months)
Aantal vlieguren:72700
Aantal vluchten:12296
Motoren: 4 General Electric CF6-80C2B1F
Bemanning:slachtoffers: 0 / inzittenden: 3
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 0 / inzittenden: 3
Schade: Groot
Gevolgen: Repaired
Plaats:nabij Frankfurt International Airport (FRA) (   Duitsland)
Fase: Nadering (APR)
Soort vlucht:Vracht
Vliegveld van vertrek:Wien-Schwechat International Airport (VIE/LOWW), Oostenrijk
Vliegveld van aankomst:Frankfurt International Airport (FRA/EDDF), Duitsland
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


BFU issued 2 Safety Recommendations

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Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Wien-Schwechat International Airport en Frankfurt International Airport bedraagt 618 km (386 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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