What was found
AFTER APU START NO DUCT PRESS. CONFIRMED APU ISO VALVE OPEN AND PNEU ISO VALVE OPEN, PERFORMED BITE TEST ON APU ECU, FOUND P/T SENSOR FAULT ON LAST RUN, CLEARED. RESTART APU PNEUMATICS, OPS TEST NORMAL AS PER AMM 49-11-01.
- Difficulty date
- August 14, 2018
- Submitted
- August 23, 2018
- Operation
- Air carrier
- Aircraft
- N1181A
- Make and model
- Boeing 7673Y0
- Aircraft serial
- 26206
- Aircraft time
- 83,841 hours, 20,598 cycles
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Sensor
- Condition
- Faulted
- Location
- Apu
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.