# SDR TRBA20120409002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2012
- Submitted: April 10, 2012
- Operation: Air carrier
- Aircraft: N425MJ
- Make and model: Aerosp ATR72
- Aircraft serial: 425
- Aircraft time: 30,342 hours, 33,728 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: AQS1000
- Part serial: 108662
- Condition: Unserviceable
- Location: Emergency Lights
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA20120409002

## Discrepancy

CREW REPORTED THAT AFTER EVERY ENGINE START, THE EMERGENCY LIGHTS IN CABIN ILLUMINATE.   ACFT REMOVED FROM SERVICE.  R & R EMERGENCY LIGHT POWER SUPPLY BATTERY 62WL IAW JIC 33-51-21, RAI 10010.   OPS TESTED SATISFACTORY.  ACFT RETURNED TO SERVICE.

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