What was found
APU AIR PRESS CYCLES FOR NO REASON. DEFERRED PNEUMATICS INOP PER MEL. REPLACED APU SURGE VALVE. RAN APU FOR 30 MINUTES WITH DIFFERENT LOADS. NO SURGING NOTED.
- Difficulty date
- April 7, 2012
- Submitted
- April 10, 2012
- Operation
- Air carrier
- Aircraft
- N665UA
- Make and model
- Boeing 767322
- Aircraft serial
- 29237
- Aircraft time
- 49,499 hours, 13,325 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Valve
- Part number
- 97980612
- Part serial
- 220
- Condition
- Faulty
- Location
- Apu
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.