# SDR ASAA2025030156355

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2025
- Submitted: March 4, 2025
- Operation: Air carrier
- Aircraft: [N237AK](https://openairdocs.org/aircraft/N237AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36357
- Aircraft time: 29,177 hours, 9,615 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: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2025030156355

## Discrepancy

ALL EMERGENCY LIGHTS ASSOCIATES WITH POWER SUPPLY M1670 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1670 AND OPS CHECK GOOD IAW B737 AMM 33-51-06. (S/N 130712)

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