# SDR DXTA2026010706436

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2026
- Submitted: January 7, 2026
- Operation: Air carrier
- Aircraft: [N846QS](https://openairdocs.org/aircraft/N846QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000095
- Aircraft time: 2,844 hours, 1,740 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Switch
- Part number: S28001257
- Part serial: NSN
- Condition: Faulty
- Location: Zone 800
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026010706436

## Discrepancy

FLT CREW REPORTED DOOR OPEN CAS, LINXUS SHOWS CABIN DOOR OPEN FAULT  ID 2230 AND CHECK DOOR FAULT  ID 2265.   DOWNLOADED AND REVIEWED ARES DATA TO CONFIRM THE DOOR IN-FRAME AFT PROX SWITCH / SC002 WAS INDICATING DOOR OPEN IN FLT. THE WIRING TO THE PCB HAS CONTINUITY AND THE RIGGING OF THE DOOR WAS FOUND TO BE GOOD. REMOVED DOOR IN-FRAME AFT PROX SWITCH SC002 AND INSTALLED NEW PROX SWITCH S2800-1257 IAW AMM 52-70-25 POST MX / CHECKS GOOD NO DEFECTS NOTED.

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