- Difficulty date
- December 4, 2012
- Submitted
- January 18, 2013
- Operation
- Air carrier
- Make and model
- Boeing 767322
- Aircraft serial
- 25091
- Aircraft time
- 91,597 hours, 14,579 cycles
- Engine
- Pwa PW4060
- Part
- Module
- Part number
- 36144007600U
- Part serial
- 36
- Condition
- Faulty
- Location
- Apu
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU ALTITUDE NO START - VERIFICATION APU HANGS BETWEEN 30 TO 50% DURING START. TRIED 3 APU STARTS FL380 TAT-41RPM PEAK 40% THEN APU FAULT EICAS. ACP'D BITE TEST OF APUCU. FAULTED "PT SENSOR". REPLACED FLOW SENSING MODULE IAW AMM. APU START NORMAL.