What was found
APU BLEED VALVE WILL NOT OPEN. REPLACED APU BLEED ISOLATION VALVE PER MM. CHECKED OKAY.
- Difficulty date
- August 20, 2013
- Submitted
- August 23, 2013
- Operation
- Air carrier
- Aircraft
- N175UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24382
- Aircraft time
- 90,135 hours, 10,142 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Isolation Valve
- Part number
- 39831051
- Part serial
- 901992
- Condition
- Faulty
- Location
- Apu
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.