# SDR MALA080020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2008
- Submitted: February 6, 2008
- Operation: Air carrier
- Aircraft: N427XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B427
- Aircraft time: 23,800 hours, 26,357 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- Location: Emergency Lights
- 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/MALA080020

## Discrepancy

DURING FUNCTION TEST OF EMERGENCY BATTERY CAPACITY, FOUND POWER SUPPLY 21LN FAILED TEST.  REMOVED AND REPLACED POWER SUPPLY AT 21LN IAW AMM 33-50-10-04-1.

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