What was found
CREW REPORT FLAPS PRIMARY ON EXTENSION AND FLAPS CONTROL. REPLACED NR 1 L/E PNEU DRIVE UNIT (PDU), REF MM. OPS CHECKED GOOD BOTH PNEUMATICALLY & IN ALT FLAPS (ELECTRICALLY).
- Difficulty date
- September 27, 2011
- Submitted
- October 20, 2011
- Operation
- Air carrier
- Aircraft
- N177UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24384
- Aircraft time
- 88,181 hours, 10,784 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2752 · Trailing Edge Flap Actuator
- Part
- Pdu
- Part number
- 60B8004237
- Part serial
- 152
- Condition
- Faulted
- Location
- Flap Sys
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.