# SDR TRBA20120426001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2012
- Submitted: April 27, 2012
- Operation: Air carrier
- Aircraft: N425MJ
- Make and model: Aerosp ATR72
- Aircraft serial: 425
- Aircraft time: 30,431 hours, 33,827 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 301200
- Part serial: 432
- 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/TRBA20120426001

## Discrepancy

AFTER NR 2 ENGINE START WITH EMERGENCY EXIT LIGHT SWITCH IN ARM,  EMERGENCY LIGHTS IN CABIN ILLUMINATED.  ACFT REMOVED FROM SERVICE.  R & R EMERGENCY LIGHT POWER SUPPLY 62WL AND EMERGENCY LIGHT BATTERY PACKS 62WL, 43WL, 73WL AND 61WL IAW JIC 33-51-21-RAI 10000 AND JIC 33-51-21-RAI-10010 AND FOUND SYS WORKING OK .  ACFT RETURNED TO SERVICE.

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