# SDR COEA2020073002804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2020
- Submitted: July 30, 2020
- Operation: Air carrier
- Aircraft: N804HC
- Make and model: Aerosp ATR42-500
- Registry model: [Aerosp ATR42-500](https://openairdocs.org/model/aerospatiale-alenia-atr42-500) (OpenAirDocs)
- Aircraft serial: 623
- Aircraft time: 23,798 hours, 32,376 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 3013017
- Part serial: 12472
- Condition: Inoperative
- Location: Power Supply
- Component: Power Supply
- Component part number: 3013100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COEA2020073002804

## Discrepancy

PASSENGER DOOR AND SERVICE DOOR EMERGENCY LIGHTS INOP WHEN USED OFF BATTERY. DISCOVERED DURING TESTING.   MAINTENANCE REPLACED THE PASSENGER AND SERVICE DOOR POWER SUPPLY AND EMERGENCY BATTERY.

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