# SDR FDEA202412201821

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2024
- Submitted: December 20, 2024
- Operation: Air carrier
- Aircraft: [N744FD](https://openairdocs.org/aircraft/N744FD), registered now
- Make and model: Airbus A300 B4-622R
- Registry model: [Airbus A300 B4-622R](https://openairdocs.org/model/airbus-a300-b4-622r) (OpenAirDocs)
- Aircraft serial: 664
- Aircraft time: 74,652 hours, 26,991 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Part serial: 4151
- Condition: No Test
- 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/FDEA202412201821

## Discrepancy

COURIER AREA "EMERGENCY TEST" SW. 25WL DOESN'T  ILLUMNIATE FOR 30 SEC. DURING OPS TEST OF  EMERGENECY POWER SUPPLY UNITS.  R & R EPSU AND BATTERY, REF AMM 33-51-14-04, OP'S CHECKS GOOD.

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