# SDR ASAA2015092213170

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2015
- Submitted: September 24, 2015
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 30,654 hours, 8,962 cycles
- System (JASC): [4960 · APU Controls](https://openairdocs.org/jasc/4960)
- Part: Warning Light
- Condition: Illuminated
- Location: Apu Inlet
- Stage of operation: CR
- 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/ASAA2015092213170

## Discrepancy

FAULT LIGHT ILLUMINATED DURING APU START ATTEMPT, FL 380.  ACFT GROUNDED.  IAW POWERPLANT ENGINEERING REQUEST, REPLACED APU INLET TEMPERATURE SENSOR REF AMM 49-61-31 AND APU INLET PRESSURE SENSOR, REF AMM 49-52-31.  APU GROUND VERIFICATION STARTS AND OPS NORMAL.

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