What was found
APU FAILED TO START, MTX FAULT MESSAGE 49-31016. GROUNDED-YES. REMOVED AND REPLACED APU FUEL CONTROL UNIT, PER B737-800 AMM 49-31-11. OPERATIONS AND NO LEAKS NOTED.
- Difficulty date
- December 13, 2020
- Submitted
- December 18, 2020
- Operation
- Air carrier
- Aircraft
- N529AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35198
- Aircraft time
- 38,844 hours, 11,489 cycles
- System (JASC)
- 4930 · APU Engine Fuel and Control
- Part
- Fcu
- Part number
- 4419215
- Part serial
- CUC12071
- Condition
- Faulted
- Location
- Apu
- Part time
- 7,136 hours, 13,413 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.