# SDR ASAA2026021164289

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2026
- Submitted: February 12, 2026
- Operation: Air carrier
- Aircraft: [N263AK](https://openairdocs.org/aircraft/N263AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 62471
- Aircraft time: 33,351 hours, 10,895 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/ASAA2026021164289

## Discrepancy

BOTH L & R FWD LOWER OVERWING EMERGENCY EXIT SIGNS INOP REF T/C 78233008. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY POWER SUPPLY AT LH FWD OVERWING FOOT PANEL REF AMM 33-51-06, OPS CHECK GOOD. ALL EMERGENCY LIGHTS OPERATING NORMALLY AT THIS TIME.

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