What was found
FOUND APU FAULT ON ARRIVAL, APU AUTOSHUTDOWN. APU WILL NOT START. FAULT LIGHT ON. FOUND FILTER SWITCH FAULT REPLACED GEN DIFFERENTIAL PRESSURE SWITCH PER MM, OPS CHECKED NORMAL.
- Difficulty date
- August 8, 2011
- Submitted
- August 12, 2011
- Operation
- Air carrier
- Aircraft
- N673UA
- Make and model
- Boeing 767322
- Aircraft serial
- 29241
- Aircraft time
- 41,914 hours, 10,991 cycles
- Engine
- Pwa PW4052
- System (JASC)
- 4920 · APU Core Engine
- Part
- Pressure Switch
- Part number
- 38760483
- Part serial
- 39
- Condition
- Faulty
- Location
- Apu
- 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.