# SDR DXTA2026042707766

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2026
- Submitted: April 27, 2026
- Operation: Air carrier
- Aircraft: [N359QS](https://openairdocs.org/aircraft/N359QS), registered now
- Make and model: Cessna 680SOV
- Aircraft serial: 6800126
- Aircraft time: 15,858 hours, 10,519 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: CBS281
- Part serial: 2541M
- 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/DXTA2026042707766

## Discrepancy

WHILE TESTING THE EMERGENCY LIGHTS DURING PRE-FLIGHT, SEVERAL INTERIOR OVERHEAD LIGHTS AND 3 EXTERIOR LIGHTS FAILED TO ILLUMINATE WITH THE EMERGENCY SWITCH IN ARM. REPEAT WRITE-UP.   GAINED ACCESS TO ALL 4 EMEGENCY BATTERIES REMOVED DEFECTIVED ONES AND INSTALLED REPAIRED UNITS IAW MM33-50-10. CHARGED AND OPS CHECKED BATTERIES & EMERGENCY LIGHTS, WORK DONE IAW AMM 33-50-00. OPS CHECK GOOD AT THIS TIME

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