# SDR ASAA2016011914926

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2016
- Submitted: January 22, 2016
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 8,887 hours, 2,845 cycles
- System (JASC): [7720 · Engine Temperature Indicating System](https://openairdocs.org/jasc/7720)
- Part: Probe
- Part number: TC29604
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016011914926

## Discrepancy

NR 1 ENGINE, PERFORMED T/C 78273000, FAULT 77-20871 AND 73-31371, THE TOP EGT SECTOR IS BAD, S4, READING 500 DEGREES OUT FROM THE S1. AFTER EGT CLEAN, NO HELP.  ACFT GROUNDED.  R & R T49.5 S4 PROBE IAW AMM 77-21-01-000-801-F00 AND 77-22-01-400-801-F00, OPS CHECK GOOD.

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