# SDR AALA202108237446

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 20, 2021
- Submitted: August 23, 2021
- Operation: Air carrier
- Aircraft: [N122NN](https://openairdocs.org/aircraft/N122NN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6252
- Aircraft time: 22,730 hours, 6,585 cycles
- Engine: Iae V2533A5
- System (JASC): [7722 · Engine EGT/TIT Indicating System](https://openairdocs.org/jasc/7722)
- Part: Thermocouple
- Condition: Defective
- Location: Nr 1 Eng Egt
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202108237446

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING CLIMB #1 ENGINE EGT DISPLAYED "XX" - NO INDICATION OF EGT TEMPERATURE. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE ENGINE ELECTRONIC CONTROL, UNIT (EEC) PER AMM 73-22-34. (AALA202108236917) ALSO REPLACED ALL 4 EGT THERMOCOUPLES PER AMM 77-21-15. (AALA202108237446) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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