# SDR YENA2025100301002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2025
- Submitted: October 7, 2025
- Operation: Air carrier
- Aircraft: [N4076J](https://openairdocs.org/aircraft/N4076J), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11513
- Aircraft time: 8,417 hours, 1,252 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 958622
- Condition: Expired
- Location: Zone 200
- Part time: 4,546 hours, 685 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2025100301002

## Discrepancy

FLT#1621, LHR-BOS. "EMERGENCY LIGHT BAT 13WL REQ REPLACEMENT PER TC A320-33-51-00-710-003; REMOVED AND REPLACED EMERG BAT 13WL IAW AMM 33-51-38. OPS CHECK GOOD."

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