# SDR ASAA2025040757287

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2025
- Submitted: April 15, 2025
- Operation: Air carrier
- Aircraft: [N251AK](https://openairdocs.org/aircraft/N251AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 62470
- Aircraft time: 28,926 hours, 9,363 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/ASAA2025040757287

## Discrepancy

EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1671 INOP. GROUNDED - YES. RMOVED AND REPLACED EMER LIGHT PWR SUPPLY AT M1671 IAW B737NG AMM33-51-06-960-806. OPS CK GOOD. (S/N 130934)

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