# SDR ASAA2016022515712

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2016
- Submitted: March 3, 2016
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 27,573 hours, 8,459 cycles
- System (JASC): [7720 · Engine Temperature Indicating System](https://openairdocs.org/jasc/7720)
- Part: Probe
- Part number: TC29603
- Condition: Failed
- Location: Nr 2 Engine
- Stage of operation: TO
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016022515712

## Discrepancy

TREND DATA SHOWS A INCREASE IN DELTA EGT AND DECREASE IN EGT HOT DAY MARGIN ON NR 2 ENGINE.  ACFT GROUNDED.  R & R NR 2 ENGINE T495S2 PROBE IAW AMM 77-21-01/401. NR 2 ENGINE  ELECTRONIC ENGINE CONTROL BITE TESTED NORMAL WITHOUT FAULTS. T49.5 PROBE'S INPUT READINGS ARE NORMAL WHILE ENGINE AT IDLE.

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