# SDR ASAA2026033065224

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2026
- Submitted: April 1, 2026
- Operation: Air carrier
- Aircraft: [N457AS](https://openairdocs.org/aircraft/N457AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36355
- Aircraft time: 43,620 hours, 13,747 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: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2026033065224

## Discrepancy

ROW 26ABC AIRCRAFT LEFT EMERGENCY LIGHT CAME ON DURING LANDING. GROUNDED - YES. DUE TO HISTORY OF THIS EMERGENCY LIGHT COMING ON, REMOVED/REPLACED ASSOCIATED POWER SUPPLY M2626 REF. MM 33-51-06.OPS NML REF. SAME MM.

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