# SDR DXTA2026092209794

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2026
- Submitted: September 22, 2026
- Operation: Air carrier
- Aircraft: [N268QS](https://openairdocs.org/aircraft/N268QS), registered now
- Make and model: Cndair CL6002B16
- Aircraft serial: 6215
- Aircraft time: 1,496 hours, 857 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 8220842621
- Part serial: 4YX717
- Condition: Defective
- Location: Nr 1
- Stage of operation: DE
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026092209794

## Discrepancy

TWICE DURING FLIGHT (ONCE ON CLIMB OUT AND ONCE ON DESCENT), LEFT PILOT LOST ALL AIRSPEED, ALTITUDE AND VERTICAL SPEED INDICATIONS, WITH ASSOCIATED RED FLAGS, LOSS OF AUTOPILOT, LOSS OF AUTO THROTTLE, AND MACH TRIM FAIL.  DURING THE SECOND EVENT (ON DESCENT AT APPROXIMATELY 3000 FEET),  BOTH PILOTS LOST ALL AIRSPEED, ALTITUDE AND VERTICAL SPEED INDICATIONS.  IN BOTH EVENTS, THE FAILURE LASTED BETWEEN 5-10 SECONDS BEFORE RETURNING TO NORMAL.  MACH TRIM, AUTO THROTTLE AND AUTOPILOT WERE ALL RESET AND LANDING WAS UNEVENTFUL. CORRECTIVE ACTION: REPLACED ADC 1 IAW AMM 34-13-01. OPS AND LEAK CHECKS GOOD.

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