What was found
APU SHUTOFF VALVE SHOWS OPEN BUT VERY LITTLE INCREASE IN DUCT PRESSURE. REPLACED PNEUMATIC CLUSTER.
- Difficulty date
- July 10, 2013
- Submitted
- September 11, 2013
- Operation
- Air carrier
- Aircraft
- N548UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25396
- Aircraft time
- 81,277 hours, 23,424 cycles
- Engine
- Pwa PW2040
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Pneumatic System
- Condition
- Malfunctioned
- Location
- Apu
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.