# SDR ASAA2019051829562

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2019
- Submitted: June 3, 2019
- Operation: Air carrier
- Aircraft: [N408AS](https://openairdocs.org/aircraft/N408AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41732
- Aircraft time: 25,629 hours, 8,347 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7722 · Engine EGT/TIT Indicating System](https://openairdocs.org/jasc/7722)
- Part: Probe
- Part number: TC29603
- Condition: Failed
- Location: Nr 1 Engine Egt
- Stage of operation: IN
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019051829562

## Discrepancy

DURING ACCOMPLISHMENT OF T/C 78273000 #1 ENGINE HAS ECONOMIC FAULT MSG 77-20861 "THE BOTTOM LEFT EGT SIGNAL (T495 S3) IS OUT OF RANGE. GROUNDED - YES. T/S PER B737-900 FIM 79-21 TASK 803 AND FOUND T495 S3 AT FAULT. REMOVED AND REPLACED T495 S3 (BOTTOM LEFT) T49.5 EGT PROBE AND TEST NML PER B737-900 AMM 77-21-01. OK FOR SVC.

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