# SDR DXTA2026030507109

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2026
- Submitted: March 5, 2026
- Operation: Air carrier
- Aircraft: [N376QS](https://openairdocs.org/aircraft/N376QS), registered now
- Make and model: Cessna 680SOV
- Aircraft serial: 6800180
- Aircraft time: 16,048 hours, 10,713 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: CBS281
- Part serial: 2889M
- Condition: Defective
- 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/DXTA2026030507109

## Discrepancy

BOTH THE EMERGENCY EXIT LIGHT  NEAR THE CABIN DOOR AND THE GALLEY EMERGECY LIGHT ARE NOT STAYING BRIGHT FOR VERY LONG BEFORE DIMMING TO UNEXCEPTABLE LEVELS. EVEN AFTER A LONG FLIGHT. SUGGESTING THE BATTERY PACK IS GOING BAD. CORRECTIVE ACTION: REMOVED AND REPLACED #1 EMERGENCY BATTERY PACK. REMOVED P/N: CBS28-1 S/N:2889M. INSTALLED P/N: CBS28-1 S/N: 3193M. ALL WORK ACCOMPLISHED REF: CE-680 MM 33-50-10. OPS CHECKED GOOD

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