# SDR DALA2023051904022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2023
- Submitted: May 19, 2023
- Operation: Air carrier
- Aircraft: [N915DU](https://openairdocs.org/aircraft/N915DU), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 62783
- Aircraft time: 13,267 hours, 5,316 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Unknown
- Condition: Unknown
- 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/DALA2023051904022

## Discrepancy

(LOG 4812012) DURING INSPECTION FOUND EXTERIOR EMERGENCY LIGHTING INOP. REPLACED GROUND BLOCK NOW CKS GOOD. REF B737 AMM 33-51 AND SWPM CHP 20.

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