# SDR ASAA2013120396595

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2013
- Submitted: December 6, 2013
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 28,767 hours, 8,487 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Detector
- Part number: 90201301
- Condition: Failed
- Location: Apu Tail
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013120396595

## Discrepancy

APU DETECTOR INOPERATIVE, CAUTION LIGHT ILLUMINATED ON FIRE PANEL.  ACFT GROUNDED. R & R APU UPPER TAILPIPE OVERHEAT DETECTOR ASSY REF MM 26-15-01.  OPS CK NORMAL, REF MM 26-15-00.

---
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.