# SDR YENA2022080100728

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2022
- Submitted: August 1, 2022
- Operation: Air carrier
- Aircraft: [N974JT](https://openairdocs.org/aircraft/N974JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07448
- Aircraft time: 21,144 hours, 6,933 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Epsu
- Part number: 321431
- Part serial: 867903
- Condition: Failed
- Location: 10wl-Batt
- Part time: 6,520 hours, 1,398 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2022080100728

## Discrepancy

FLT#974, AUA-BOS. 'EPSU FAIL TEST AFTER OVER WING SLIDE CHANGE; REMOVED AND REPLACED EPSU BATTERY FIN 10WL. OPS CHECK GOOD. REF AMM 33-51-38-000001A.

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