# SDR DALA2026030901624

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2026
- Submitted: March 9, 2026
- Operation: Air carrier
- Aircraft: [N539DN](https://openairdocs.org/aircraft/N539DN), 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: 11479
- Aircraft time: 11,231 hours, 2,774 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- 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/DALA2026030901624

## Discrepancy

DURING SVC CHECK FOUND ROWS 33-38 EMERGENCY LIGHTS OUT.   REPLACED EPSU BATTERY ON AFT GALLEY AND LEFT AND RIGHT CENTER CABIN EPSU. REPLACED AFT GALLEY EPSU, FOUND BROKEN WIRE AT ROW 36. SPLICED BROKEN WIRES IAW A321 AWM 33-51-08. AND SPWM CHAP 20. FOUND EPSU (11WL) FAULTING UNIT IN LH CENTER CABIN. REPLACED PER A321 NEO AMM 33-51. (LP 8387766)

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