# SDR DALA2025032202151

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2025
- Submitted: March 23, 2025
- Operation: Air carrier
- Aircraft: [N372NW](https://openairdocs.org/aircraft/N372NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 1633
- Aircraft time: 66,069 hours, 31,429 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 77233500
- Part serial: 2440
- Condition: Inoperative
- Location: Zone 200
- Part time: 57,818 hours, 30,457 cycles
- 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/DALA2025032202151

## Discrepancy

SHIP 3272 DISC: OVER WINDOW EXIT SIGN ON ABC SIDE DOES NOT ILLUMINATE. C/A: T/S PER A320 TSM 33-51-00. FOUND EPSU AT LEFT OVERWING LOCATION BAD. REMOVED EPSU IAW A320 AMM 33-51-38 WIP (557633). R&R EPSU AND BATTERY IAW A320 AMM 33-51 OPS CKS NORMAL A/C OK. (LP: 6870064)

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