# SDR ASAA2015022510787

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2015
- Submitted: March 2, 2015
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 1,433 hours, 485 cycles
- System (JASC): [7720 · Engine Temperature Indicating System](https://openairdocs.org/jasc/7720)
- Part: Probe
- Part number: T29604
- Condition: Faulted
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015022510787

## Discrepancy

WHILE ACCOMPLISH, T/C 78273000 FOUND FAULT 77-10841 TOP RT EGT SIGNAL, T495S1 OUT OF RANGE ON 1 ENGINE.  ACFT GROUNDED.  ACCOMPLISHED TC 78273000 AND FOUND FAULT 77-10841 STILL ACTIVE.  REMOVED AND INSTALLED NEW T49.5 S1 PROBE REF AMM 77-21-01.  PERFORMED POWER PLANT REF TEST TABLE EEC TEST.

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