# SDR ASAA2013062295246

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2013
- Submitted: June 25, 2013
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 25,138 hours, 7,698 cycles
- System (JASC): [7720 · Engine Temperature Indicating System](https://openairdocs.org/jasc/7720)
- Part: Probe
- Part number: TC29603
- Condition: Out Of Limits
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013062295246

## Discrepancy

DIAGNOSTICS REPORTS NR 1 ENGINE EGTHDM CONTINUES TO SHOW GREATER THAN EXPECTED DATA SCATTER WITH AN INCREASE IN DELTA EGT.  ACFT GROUNDED. INSPECTED ALL EGT PROBES IAW 77-21-01, TABLE C.  FOUND PROBE S4 OUT OF LIMITS.  REMOVED AND INSTALLED NEW S4 PROBE REF 77-21-01. RECHECKED T49.5 READINGS AND ALL READINGS ARE WITHIN LIMITS.

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