What was found
LEFT NR 2 LEADING EDGE FLAP WOULD NOT RETRACT. RETURNED TO FIELD. *S/D* NR 2 LEFT HAND LEADING EDGE FLAP DRIVE UNIT WAS REPLACED. REMOVED UNIT WAS DISASSEMBLED IN THE SHOP WITH NO DEFECTS NOTED.
- Difficulty date
- December 17, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N4724U
- Make and model
- Boeing 747122
- Aircraft serial
- 19875
- Engine
- Pwa JT9D7A
- System (JASC)
- 2750 · Trailing Edge Flap Control System
- Part
- Drive Unit
- Part number
- 126344151U1
- Condition
- Failed
- Location
- Nr 2 Le Flap
- Component
- Allied Signa
- Stage of operation
- CL
- Nature of condition
- F, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.