# SDR ASOA20111204006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2011
- Submitted: December 8, 2011
- Operation: Air carrier
- Aircraft: [N21154](https://openairdocs.org/aircraft/N21154), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 145772
- Aircraft time: 23,306 hours, 12,564 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: BA50933901
- Part serial: 01352
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA20111204006

## Discrepancy

DURING ROUTINE SCHEDULED MX,  FOUND THE EMERGENCY EXIT LIGHTS ON MAIN CABIN DOOR, COCKPIT CEILING AND STEP, AND GALLEY EXIT SIGN WOULD NOT ILLUMINATE.  MX R & R NR 1 EMERGENCY LIGHT POWER SUPPLY AND BATTERY ALONG WITH NR 2 EMERGENCY LIGHT BATTERY IAW AMM 33-50-04 WITH OPS CHECKS SUCCESSFUL. ACFT WAS APPROVED FOR RETURN TO SERVICE.

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