Report: Asiana B744 at Frankfurt on May 8th 2009, lost part of flaps on final approach
By Simon Hradecky, created Thursday, Jul 16th 2009 09:14Z, last updated Thursday, Jul 16th 2009 09:14Z
Area of the missing flap part (Photo: BFU)
An Asiana Airlines Boeing 747-400 freighter, registration HL7419 performing freight flight OZ-797 from Vienna (Austria) to Frankfurt/Main (Germany) with 2 crew, was on final approach to Frankfurt's runway 25L about half way between outer marker and touch down zone at a height of 1400 feet with an airspeed of 160 KIAS and the autopilot tracking the instrument landing system, when the crew selected the landing flaps to 30 degrees. Moments after the flaps lever was moved, the crew heard a knocking sound and the aircraft rolled left by about 1 degree countered by the autopilot. A safe landing followed with no further incident, the airplane taxied normally to its parking position.
The German Bureau for Aviation Accident Investigation (BFU) reported, that in a post flight inspection a part of the left landing flaps, the inboard fore flap sized about 4.5 meters by 1 meter (15 by 3 feet), was detected missing from the wing. The remaining fragment was twisted. Two connecting rods between the forward and center flap were torn out.
The skin of the fuselage at the left side between wing and rear freight door was pierced at a length of 3.5 meters, the inner pressure cabin was pierced as well. Longerons and ribs were severly damaged in that area.
The left side of the vertical finwas pierced as well.
The approximate location of the airplane at the time, when the part departed the wing, was determined by analysis of the flight data recorders and a search conducted on the ground, so far the missing piece has not been found however.
The pierced fuselage (Photo: BFU):
By Simon Hradecky, created Thursday, Jul 16th 2009 09:14Z, last updated Thursday, Jul 16th 2009 09:14Z
Area of the missing flap part (Photo: BFU)
An Asiana Airlines Boeing 747-400 freighter, registration HL7419 performing freight flight OZ-797 from Vienna (Austria) to Frankfurt/Main (Germany) with 2 crew, was on final approach to Frankfurt's runway 25L about half way between outer marker and touch down zone at a height of 1400 feet with an airspeed of 160 KIAS and the autopilot tracking the instrument landing system, when the crew selected the landing flaps to 30 degrees. Moments after the flaps lever was moved, the crew heard a knocking sound and the aircraft rolled left by about 1 degree countered by the autopilot. A safe landing followed with no further incident, the airplane taxied normally to its parking position.
The German Bureau for Aviation Accident Investigation (BFU) reported, that in a post flight inspection a part of the left landing flaps, the inboard fore flap sized about 4.5 meters by 1 meter (15 by 3 feet), was detected missing from the wing. The remaining fragment was twisted. Two connecting rods between the forward and center flap were torn out.
The skin of the fuselage at the left side between wing and rear freight door was pierced at a length of 3.5 meters, the inner pressure cabin was pierced as well. Longerons and ribs were severly damaged in that area.
The left side of the vertical finwas pierced as well.
The approximate location of the airplane at the time, when the part departed the wing, was determined by analysis of the flight data recorders and a search conducted on the ground, so far the missing piece has not been found however.
The pierced fuselage (Photo: BFU):
