Accident Boeing 747-48EF HL7419, Friday 8 May 2009
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Date:Friday 8 May 2009
Time:21:59
Type:Silhouette image of generic B744 model; specific model in this crash may look slightly different    
Boeing 747-48EF
Owner/operator:Asiana Airlines
Registration: HL7419
MSN: 25781/1044
Year of manufacture:1994
Total airframe hrs:72700 hours
Cycles:12296 flights
Engine model:General Electric CF6-80C2B1F
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial, repaired
Category:Accident
Location:near Frankfurt International Airport (FRA) -   Germany
Phase: Approach
Nature:Cargo
Departure airport:Wien-Schwechat International Airport (VIE/LOWW)
Destination airport:Frankfurt International Airport (FRA/EDDF)
Investigating agency: BFU
Confidence Rating: Accident investigation report completed and information captured
Narrative:
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.

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

Accident investigation:
cover
  
Investigating agency: BFU
Report number: BFU AX001-09
Status: Investigation completed
Duration: 8 years and 10 months
Download report: Final report

Sources:


History of this aircraft

Other occurrences involving this aircraft

30 November 1998 HL7419 Asiana Airlines 0 New York-John F. Kennedy International Airport, NY (JFK) sub

Revision history:

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