What was found
APU PNEUMATICS INOP. PERFORMED AU ECU BITE PER FIM 49-22 FT 866. P2 SENSOR HARD FAULT. R/R P2 SENSOR PER AMM, NO HELP. PERFORMED WIRING CHECK OF APU SYST. PER WDM NO DEFECTS FOUND. R/R APU PER TASK CARD. OPS CHECK NORMAL.
- Difficulty date
- September 24, 2025
- Submitted
- September 29, 2025
- Operation
- Air carrier
- Aircraft
- N688SL
- Make and model
- Boeing 757230
- Aircraft serial
- 25140
- Aircraft time
- 106,746 hours, 27,258 cycles
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Apu
- Part number
- 380029815
- Part serial
- P1799
- Condition
- Faulty
- Location
- Zone 100
- 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.