# SDR DXTA2026010806429

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2026
- Submitted: January 8, 2026
- Operation: Air carrier
- Aircraft: [N389QS](https://openairdocs.org/aircraft/N389QS), registered now
- Make and model: Cessna 680SOV
- Aircraft serial: 6800149
- Aircraft time: 15,637 hours, 10,424 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light
- Part number: M8353615022L
- Condition: Malfunctioned
- Location: Zone 200
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026010806429

## Discrepancy

WITH EMER LIGHTS IN THE ARM POSITION-NO LIGHTS ILLUMINATE. HOWEVER, EVERY 30 SECONDS OR SO, ALL OF THE EMERGENCY LIGHTS FLASH TEMPORARILY (SEE ATTACHED VIDEO).   GAINED ACCESS TO PILOT CONTROL EMERGENCY LIGHTS RELAY (KC005) PN: M83536/15-022L NSN THEN INSTALLED CUSTOMER SUPPLIED NEW RELAY PN: M83536/15-022 IAW CE680 AMM 24-60-20. OPERATIONAL CHECKS ARE SATISFACTORY AT THIS TIME. NO DEFECTS NOTED. RETURNED THE AIRCRAFT BACK TO NORMAL CONFIGURATION.

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