What was found
CSS FAILED FL 400 (3 ATTEMPTS), FAULT LIGHT ILLUMINATED. GROUNDED - YES. FOUND FAULT 49-31016 OVERTEMP SHUTDOWN. IAW FIM TASK 49-30 TASK 803, STARTED APU NO FAULTS NOTED. APU COLD SOAK START ACCOMPLISHED, SUCCESSFUL.
- Difficulty date
- May 17, 2020
- Submitted
- May 21, 2020
- Operation
- Air carrier
- Aircraft
- N487AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44108
- Aircraft time
- 17,979 hours, 5,611 cycles
- System (JASC)
- 4970 · APU Indicating System
- Part
- Warning System
- Condition
- False Activation
- Location
- Apu
- 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.