# SDR DALA2023071705751

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2023
- Submitted: July 17, 2023
- Operation: Air carrier
- Aircraft: [N866DN](https://openairdocs.org/aircraft/N866DN), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 31977
- Aircraft time: 21,202 hours, 8,125 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: UNKNOWN
- Condition: Inoperative
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023071705751

## Discrepancy

(LOG 9195914) FOUND L1 DOOR EMERGENCY LIGHTS NOT ILLUMINATING DURING EMERG LIGHT CHECK WC 3350-7390. TROUBLESHOT AND REPLACED EMERGENCY BATTERY PACK M1675 IAW B737 AMM 33-51-06. OPS CHK GOOD.

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