# SDR ASAA2018030623784

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2018
- Submitted: March 8, 2018
- Operation: Air carrier
- Aircraft: [N592AS](https://openairdocs.org/aircraft/N592AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35190
- Aircraft time: 38,770 hours, 11,806 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018030623784

## Discrepancy

PILOT REPORTED APU WILL NOT START WITH BLUE MAINTENANCE LIGHT.  ACFT GROUNDED.  ACCOMPLISHED BITE CHECK IAW FIM 49-60 / 801.  FOUND FAULT MESSAGE 49-41012, NO ROTATION SHUTDOWN, PERFORMED SUCCESSFUL GROUND START. APU OPS CHECKED NORMAL. NO HISTORY PAST 30 DAYS. GROUND VERIFICATION SUCCESSFUL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.