# SDR CALA2026010912824

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2025
- Submitted: January 9, 2026
- Operation: Air carrier
- Aircraft: [N37287](https://openairdocs.org/aircraft/N37287), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31636
- Aircraft time: 66,324 hours, 24,763 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: No Test
- 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/CALA2026010912824

## Discrepancy

EMERGENCY LIGHT BATTERY POWER SUPPLY M1673 FAILED AN OPS CHECK.   R & R EMERGENCY LIGHT POWER SUPPLY. M1673 IAW AMM 33-51-06-960-806.

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