# SDR MALA020182

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2002
- Submitted: March 8, 2002
- Operation: Air carrier
- Aircraft: N437XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B437
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 330151
- Part serial: 1370
- Condition: Defective
- Stage of operation: TX
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA020182

## Discrepancy

During test of Emergency lighting System JC #335003, Maintenance found several lights Inop under no power conditions.  Found Power supply 20LN  PN 3301-51 SN/2192 at fault.  Removed and replaced Power Supply PN 3301-51, SN ON 1370, SN OFF 2192. .

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