# SDR DALA2017092707126

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 26, 2017
- Submitted: September 28, 2017
- Operation: Air carrier
- Aircraft: N916DE
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53421
- Aircraft time: 60,162 hours, 46,590 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- 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/DALA2017092707126

## Discrepancy

DURING AN EMERGENCY LIGHTS CHECK, THE BATTERY POWER  SUPPLY FAILED.  THE BATTERY POWER SUPPLY WAS REPLACED IAW AMM 33-53-00-401. FUNCTIONAL TEST WAS PERFORMED IAW AMM 33-53- 00-601. TESTED OK.

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