# SDR TRBA2008032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2008
- Submitted: March 17, 2008
- Operation: Air carrier
- Aircraft: N541AT
- Make and model: Aerosp ATR 72-212A
- Registry model: [Aerosp ATR 72-212A](https://openairdocs.org/model/aerospatiale-atr-72-212a) (OpenAirDocs)
- Aircraft serial: 541
- Aircraft time: 16,940 hours, 19,381 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: HD3013017
- Part serial: 75033
- Condition: Failed
- 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/TRBA2008032

## Discrepancy

HALF OF AISLE PATH EVACUATION LIGHTS NOT WORKING ON BATTERY POWER.  REPLACED AND TESTED EMERGENCY LIGHTS POWER SUPPLY 61WL BATTERY PACK AS PER MM 33-51-21 AND FOUND WORKING PROPERLY.

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