# SDR ASAA2017020619726

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2017
- Submitted: February 8, 2017
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 38,104 hours, 11,670 cycles
- System (JASC): [4960 · APU Controls](https://openairdocs.org/jasc/4960)
- Part: Sensor
- Condition: Contaminated
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017020619726

## Discrepancy

ON APU SHUT DOWN, APU FAULT LIGHT ILLUMINATED. WAITED 5 MINUTES AND FAULT LIGHT EXTINGUISHED. TRIED TO START APU TWICE AND BOTH TIMES APU FAILED TO START AND FAULT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED FIM 49-60 TASK 801 & 49-60 TASK 812. REMOVED INLET TEMP SENSOR, FOUND MOISTURE, REINSTALLED TEMP SENSOR PER AMM 49-61-31. APU STARTS & OPERATES NORMAL AND NO CURRENT FAULTS.

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