# SDR ASAA2025061458741

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2025
- Submitted: June 18, 2025
- Operation: Air carrier
- Aircraft: [N590AS](https://openairdocs.org/aircraft/N590AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35687
- Aircraft time: 62,500 hours, 18,969 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Inoperative
- Location: Zone 200
- 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/ASAA2025061458741

## Discrepancy

WHILE ACCOMPLISHING T/C 78233001 FOUND L-2 DOOR INTERIOR AND EXTERIOR LIGHTS FIALED BOTH BATTERY LIFE TESTS. GROUNDED - YES. REMOVED AND REPLACED M1673 EMERGANC LIGHT BATTERY PACK REF 33-51-06-960-805. NO OTHER DISCREPANCIES NOTED.

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