- Difficulty date
- June 5, 2020
- Submitted
- June 8, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44108
- Aircraft time
- 18,111 hours, 5,667 cycles
- Part
- Fcu
- Part number
- 4419215
- Part serial
- CUC21162
- Condition
- Malfunctioned
- Location
- Apu
- Part time
- 5,761 hours, 10,256 cycles
- Stage of operation
- CR
- How discovered
- O
- 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
FAULT LIGHT ILLUMINATED DURING APU START ATTEMPT FL 390 SUCCESSFUL CSS ACCOMPLISHED AFTER FAULT LIGHT EXTINGUISHED. GROUNDED - YES. REMOVED AND REPLACED APU FUEL CONTROL UNIT REF AMM 49-91-11 AND APU LUBE MODULE REF AMM 49-31-11. LEAK AND OPS CHECKS GOOD. NO FAULTS NOTED.