# SDR AALA202109107843

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2021
- Submitted: September 10, 2021
- Operation: Air carrier
- Aircraft: [N838NN](https://openairdocs.org/aircraft/N838NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31097
- Aircraft time: 33,602 hours, 13,928 cycles
- Engine: Cfmint CFM567B242
- Engine time: 34,624 hours, 14,070 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Deteriorated
- Location: Left
- Stage of operation: CL
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202109107843

## Discrepancy

AIRCRAFT WAS GROUNDED: ON TAKEOFF LEFT ENGINE EXHAUST GAS TEMPERATURE DISPLAY TURNED RED. HIGHEST OBSERVED TEMPERATURE WAS 962 DEGREES. AFTER 1 MINUTE TEMPERATURE RETURNED TO NORMAL AFTER RETARDING THROTTLE. FLIGHT DECLARED EMERGENCY AND LANDED OVERWEIGHT. LANDED WITHOUT SHUTTING DOWN ENGINE. CAUSE FOR EXHAUST GAS TEMPERATURE OVERTEMP IS ENGINE DETERIORATION. IT IS THE 4TH REPORTED EXHAUST GAS TEMPERATURE OCCURRENCE. **SUPPLEMENTAL REPORT REQUIRED** (OPEN)

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