# SDR DALA2021072804238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2021
- Submitted: July 28, 2021
- Operation: Air carrier
- Aircraft: [N333NW](https://openairdocs.org/aircraft/N333NW), registered now
- Make and model: Airbus A320-211
- Registry model: [Airbus A320-211](https://openairdocs.org/model/airbus-industrie-a320-211) (OpenAirDocs)
- Aircraft serial: 329
- Aircraft time: 85,075 hours, 39,529 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021072804238

## Discrepancy

DURING TEST OF THE EMER LIGHT SYSTEM, EMERGENCY POWER SUPPLY UNIT 12WL (BATTERY PACK) DID NOT FUNCTION. CORRECTIVE ACTION: REPLACED PER A320 FAM AMM 33-51-38. OK FOR SERVICE.

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