# SDR ASAA2025051657993

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2025
- Submitted: May 19, 2025
- Operation: Air carrier
- Aircraft: [N265AK](https://openairdocs.org/aircraft/N265AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41728
- Aircraft time: 30,835 hours, 10,140 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/ASAA2025051657993

## Discrepancy

EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1670 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY POWER SUPPLY M1670 S/N 134696 AND OPS CHECK GOOD IAW B737NG AMM 33-51-06-960-806.

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