What was found
APU WON'T START WITH A FAULT INDICATOR. ATTEMPTED 2ND START AFTER FAULT LIGHT EXTINGUISHED. 2ND APU START ATTEMPT FAILED WITH ANOTHER FAUL LIGHT. GROUNDED - YES. REF L/P 60125976 APU CSS SUCCESSFUL FL 350. REMOVED MEL 49-99A.
- Difficulty date
- April 22, 2021
- Submitted
- April 29, 2021
- Operation
- Air carrier
- Aircraft
- N570AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35185
- Aircraft time
- 51,956 hours, 15,508 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Apu
- Condition
- Malfunctioned
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.