- Difficulty date
- September 2, 2021
- Submitted
- September 7, 2021
- Operation
- Air carrier
- Make and model
- Boeing 7379
- Aircraft serial
- 44088
- Aircraft time
- 488 hours, 208 cycles
- Part
- Ecu
- Part number
- 7072086010
- Part serial
- 6505150206012
- Condition
- Faulted
- Location
- Apu
- Part time
- 518 hours, 222 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER FAULT LIGHT ILLUMINATED FOR APU ON INITIAL START. GROUNDED - YES. REF B737-9 AMM 49-61-12, REMOVED/REPLACED APU ECU. VERIFIED ECU SOFTWARE INSTALLED IS CORRECT PER IPC. APU BITE PROCEDURE AND STARTING/OPERATION GOOD REF AMM 49-61-00. GROUND VERIFICATION CHECK GOOD.