What was found
APU SHUTDOWN AUTOMATICALLY THREE TIMES. *S/D* FOUND LOP FAULT ON ECU. REPLACED LOP SWITCH AND RAN APU WITH PNUEMATIC LOADS. OPERATIONAL CHECK OK WITH NO MESSAGES OR AUTO SHUTDOWNS.
- Difficulty date
- August 28, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N534UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25129
- Engine
- Pwa PW2037
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Switch
- Part number
- 38760244
- Condition
- Failed
- Location
- Apu
- Stage of operation
- NR
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.