# SDR CALA2025122912496

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2025
- Submitted: December 29, 2025
- Operation: Air carrier
- Aircraft: [N27477](https://openairdocs.org/aircraft/N27477), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 31647
- Aircraft time: 38,572 hours, 14,075 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/CALA2025122912496

## Discrepancy

RIGHT FORWARD OVERWIND EXIT SIGN INOPERATIVE.  R & R M1695 POWER SUPPLY ASSEMBLY. RIGHT OVERWING EXIT LIGHTS OPS CHECKS NORMAL. IW WDM 33-51-13-7,.AMM 33-51-06-960-806.

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