# SDR DXTA2026012106599

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2026
- Submitted: January 21, 2026
- Operation: Air carrier
- Aircraft: [N389QS](https://openairdocs.org/aircraft/N389QS), registered now
- Make and model: Cessna 680SOV
- Aircraft serial: 6800149
- Aircraft time: 15,682 hours, 10,449 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Relay
- Part number: S465515022
- Condition: Faulted
- 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/DXTA2026012106599

## Discrepancy

EMERGENCY LIGHT SYS FAILED PREFLIGHT CHK. WITH SWITCH IN ARM, NO LIGHTS ILLUMINATED.  EMERG LIGHT SWITCH ON, CABIN DOOR LIGHTS FAILED, AS LIGHT OVER GALLEY WORK AREA FAILED.  WHILE MOVING EMERG LIGHT SWITCH,  LIGHTS OCCASIONALLY FLICKER VERY BRIEFLY THEN GO OUT.  REMOVED RELAY KC006 IAW MM 24-60-20 & PERFORMED A GVI OF PINS & SOCKETS, NO DEFECTS. WIRING CHK FROM KC006 X2 TO GND NOTING 0.2 Q. INSTALLED NEW RELAY IAW MM 24-60-20. ACCESSED EMERG LIGHT SWITCH & PERFORMED A GVI, NO FAULTS. WIRE CHKS OF S1, S2, S3, & 54 WITHIN LIGHT SWITCH, NO DEFECTS OR ABNORMAL RESISTANCE. POWERED ACFT & ALLOWED EMER LIGHT BATTERIES TO CHARGE FOR 1 HOUR. PERFORMED 5 OPS CHKS OF EMERG BATTERIES IAW MM 33-50-00,  NO DEFECTS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.