# SDR ASAA2026031064882

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2026
- Submitted: March 17, 2026
- Operation: Air carrier
- Aircraft: [N281AK](https://openairdocs.org/aircraft/N281AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 62679
- Aircraft time: 23,893 hours, 7,550 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/ASAA2026031064882

## Discrepancy

EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M2627 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY M2627. PN#D717-02-001 PERFORMED INSTALLATION TEST. TEST PASSED NO DEFECTS NOTED IAW B737-900 AMM 33-51-06-960-806.

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