# SDR DXTA2026013006686

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2026
- Submitted: January 30, 2026
- Operation: Air carrier
- Aircraft: [N547QS](https://openairdocs.org/aircraft/N547QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0094
- Aircraft time: 8,611 hours, 5,662 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Uplock Switch
- Part number: 603733
- Condition: Defective
- Location: Zone 700
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026013006686

## Discrepancy

AFTER GEAR RETRACTION THE GEAR DISAGREE R CAS MESSAGE CAME ON ALONG WITH A YELLOW X OVER THE RIGHT GEAR INDICATOR. RAN QRH AND ENDED UP BLOWING GEAR DOWN.  SENT ARES DOWNLOAD FOR REVIEW. THE RESULTS SHOWED A FAILED SWITCH.   WIRE HARNESS INSPECTION & WIRE CHECKED,  NO DEFECTS NOTED.  SERVICED AND RESET THE EMERGENCY GEAR EXTENSION PNEUMATIC BOTTLE. CYCLED GEAR 10 TIMES IAW AMM WITH NO FAULT.  REMOVED DEFECTIVE RT MAIN DOWNLOCK SWITCH. INSTALLED A NEW SWITCH IAW AMM 32-30-15.  C/W POST INSTALL OPS CHECKS, NO DEFECTS NOTED. OPS CHECK GOOD.  INSTALLED SEALANT AROUND THE SWITCH HOUSING GAP IAW AMM: 20-40-20.

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