# SDR ASAA2015091013025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2015
- Submitted: September 15, 2015
- Operation: Air carrier
- Aircraft: [N419AS](https://openairdocs.org/aircraft/N419AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41734
- Aircraft time: 9,770 hours, 3,156 cycles
- System (JASC): [4960 · APU Controls](https://openairdocs.org/jasc/4960)
- Part: Sensor
- Part number: MS280341
- Condition: Faulted
- Location: Apu Inlet
- Stage of operation: TX
- 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/ASAA2015091013025

## Discrepancy

AFTER NORMAL ENGINE START USING THE APU.  APU WAS SHUTDOWN, OPS NORMAL. DURING TAXI OUT FAULT LIGHT ILLUMINATED.  AFTER APPROXIMATELY 5 MINS APU FAULT EXTINGUISHED. ACFT GROUNDED. PERFORMED APU BITE REF FIM 49-60, TASK 801.  FOUND FAULT 49-61223 CURRENT STATUS-  WOULD NOT CLEAR ON SUBSEQUENT STARTS. T/S IAW FIM 49-60, TASK 812.  REPLACED INLET TEMP SENSOR REF AMM 49-61-31.  ETOPS SIGNIFICANT SYS GROUND VERIFICATION SUCCESSFUL.  APU OPS AND BITE CK GOOD.

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