# SDR DALA2018061103927

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2018
- Submitted: June 11, 2018
- Operation: Air carrier
- Aircraft: [N944AT](https://openairdocs.org/aircraft/N944AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55007
- Aircraft time: 51,148 hours, 34,948 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- 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/DALA2018061103927

## Discrepancy

DURING SERVICE CHECK, THE L1 AND R1 EXIT SIGNS FAILED TO ILLUMINATE DURING EMERGENCY LIGHT TEST.  MAINTENANCE FOUND THAT THE BATTERY POWER SUPPLY WAS BAD AT POSITION B5-123.  THE BATTERY POWER SUPPLY WAS REPLACED AND OPS CHECKED GOOD IAW AMM 33-51-03, WDM 33-51-12, AND FIM 33-50-00 810-801.

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