# SDR DXTA2026073109069

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2026
- Submitted: July 31, 2026
- Operation: Air carrier
- Aircraft: [N818QS](https://openairdocs.org/aircraft/N818QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000055
- Aircraft time: 6,677 hours, 3,951 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Sensor
- Condition: Faulted
- Location: Zone 800
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026073109069

## Discrepancy

CLIMBING THROUGH 31,000 RECEIVED AMBER "CHECK DOORS" AND "CABIN DOOR OPEN" CAS MESSAGE. COMPLETED QRH AND CONTINUED TO DESTINATION. "CORRECTIVE ACTION" REMOVED DOOR PROXIMITY SWITCH (SC002) P/N: S2800-1257, S/N: N/A, DUE TO FAULTY SWITCH CAUSING "CHECK DOORS" AND "CABIN DOOR OPEN" CAS MESSAGE. INSTALLED NEW DOOR PROXIMITY SWITCH (SC002)  OPS CHECK GOOD. ASSOCIATED CAS MESSAGES NO LONGER DISPLAY AT THIS TIME. REF AMM 52-70-25.

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