# SDR DXTA2010122704380

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2010
- Submitted: December 27, 2010
- Operation: Air carrier
- Aircraft: [N324QS](https://openairdocs.org/aircraft/N324QS), registered now
- Make and model: Cessna 680CE
- Aircraft serial: 6800242
- Aircraft time: 1,711 hours, 1,104 cycles
- Engine: Pwc PW306C
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 501188105
- Part serial: 3159
- Condition: Inoperative
- Part time: 2,549 hours, 1,667 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2010122704380

## Discrepancy

AT FL410, STDBY HORIZON HAD RED X'S OVER AIRSPEED, AND ALTITUDE. ON DECENT THRU FL200 THE DATA DISPLAYED.   INSTALLED A REPAIRED STBY ADC.  OPS CHECKED GOOD.  WORK DONE IAW MM 34-22-00 AND CH 34-11-00 AND FAR 91.411, PART 43, APPENDIX E.

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