# SDR AALA202302028655

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2023
- Submitted: February 2, 2023
- Operation: Air carrier
- Aircraft: [N998AN](https://openairdocs.org/aircraft/N998AN), registered now
- Make and model: Airbus A300*
- Aircraft serial: 7509
- Aircraft time: 18,066 hours, 7,026 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Condition: Failed
- Location: Zone 200 - Fuse
- Stage of operation: IN
- How discovered: C
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202302028655

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: DURING BITE CHECK OF THE EMERGENCY POWER SUPPLY UNITS, EMERGENCY POWER SUPPLY UNIT 13WL BATTERY FAULT DISPLAYED. MAINTENANCE REPLACED THE BATTERY FOR EMERGENCY POWER SUPPLY UNIT 13WL PER AMM 33-51-38 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.

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