What was found
APU AUTO SHUTDOWN AFTER APPROX 15-20 MINS OF OPERATION. ALL CHIP DETECTORS ARE OKAY AND NOTED OIL SYSTEM EXTREMELY HOT. [5-1-07] HISTORY SHOWS COOLING FAN AND OIL COOLER RECENTLY REPLACED. REPLACED APU.
- Difficulty date
- March 2, 2007
- Submitted
- March 13, 2007
- Operation
- Air carrier
- Aircraft
- N546UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25367
- Aircraft time
- 56,822 hours, 16,611 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Apu
- Condition
- Shutdown
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.