# SDR MALA040528

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2004
- Submitted: August 16, 2004
- Operation: Air carrier
- Aircraft: N424XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B424
- Aircraft time: 16,544 hours, 18,350 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 549132406
- Condition: Inoperative
- Location: Emergency Light
- 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/MALA040528

## Discrepancy

EMERGENCY POWER SUPPLY P/N 501-1712-02, S/N 1603 FAILED SCHEDULED CAPACITY CHECK.  MAINTENANCE REPLACED 2 EACH CELL PACKS P/N 549-1324-06.  UNIT PASSES CMM CHECKS.  AIRCRAFT RETURNED TO SERVICE 8/11/04.

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