# SDR ASAA2025100461414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2025
- Submitted: October 7, 2025
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 40,738 hours, 12,607 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Condition: Inoperative
- Location: Power Supply
- Component: Power Supply
- Component part number: D71702001
- 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/ASAA2025100461414

## Discrepancy

EMERGENCY AISLE LIGHTS AT SEAT ROW 17 & 19 FED INOP. GROUNDED - YES. REPLACED TWO EACH FUSES IN BATTERY PACK M1671 REF B737NG AMM 33-51-06-960-804. AISLE LIGHTS AT SEAT ROW 17 AND 19 FED OPS CHECK GOOD REF B737NG AMM 33-51-06-960-804.P.O. 1125797.1.

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