- Difficulty date
- October 31, 2019
- Submitted
- November 5, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36355
- Aircraft time
- 22,706 hours, 7,379 cycles
- Part
- Ecu
- Part number
- 707208601
- Part serial
- 6505150200667
- Condition
- Failed
- Location
- Apu
- Part time
- 22,753 hours, 7,394 cycles
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT ILLUMINATED ON GROUND DOES NOT START. GROUNDED - YES. REMOVED & REPLACED ECU, VERIFIED CORRECT ECU SOFTWARE INSTALLED, PERFORMED OPS TEST NORMAL REF B737-900 AMM 49-61-12, PERFORMED SUCCESSFUL GROUND VERIFICATION CHECK, CLEARS MEL 49-1B.