# SDR MALA100107

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2010
- Submitted: August 11, 2010
- Operation: Air carrier
- Aircraft: N438XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B438
- Aircraft time: 27,022 hours, 30,022 cycles
- Engine: Pwa PW4060
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- 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/MALA100107

## Discrepancy

DURING OPS TEST OF EMERGENCY LIGHTING SYS FOUND BATTERY PACK 21LN FAILED.  R & R POWER SUPPLY.

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