# SDR F3LA202607180434

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2026
- Submitted: July 18, 2026
- Operation: Air carrier
- Aircraft: [N679FR](https://openairdocs.org/aircraft/N679FR), 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: 13189
- Aircraft time: 483 hours, 220 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 2A52210000100
- Condition: Failed
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/F3LA202607180434

## Discrepancy

DURING HEAVY CHECK EPSU BATTERY 1002WL (EMER R) FAILED EPSU SYS TEST. AIRCRAFT WAS NOT GROUNDED AS A RESULT OF THE SDR REPORTABLE EVENT.  REMOVED AND REPLACED EPSU BATTERY 1002WL (EMER R) IAW AMM 33-51-38-000-002-A/33-51-38-400-002-A OPS CHECK GOOD. AIRCRAFT WAS RETURNED TO SERVICE. /END/.

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