# SDR AALA202308154303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2023
- Submitted: August 15, 2023
- Operation: Air carrier
- Aircraft: [N159AN](https://openairdocs.org/aircraft/N159AN), registered now
- Make and model: Airbus A320*
- Aircraft serial: 7034
- Aircraft time: 22,636 hours, 8,797 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: No Test
- Location: Zone 200 - Fuse
- 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/AALA202308154303

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING TROUBLESHOOTING OF EMERGENCY POWER SUPPLY UNIT 10WL MAINTENANCE FOUND BATTERY INOPERATIVE. REPLACED BATTERY FOR EMERGENCY POWER SUPPLY UNIT 10WL PER AMM 33-51-18.

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