# SDR DXTA2008111003342

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2008
- Submitted: November 10, 2008
- Operation: Air carrier
- Aircraft: [N605QS](https://openairdocs.org/aircraft/N605QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605321
- Aircraft time: 5,624 hours, 4,462 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 1421851100
- Part serial: 1800
- Condition: Malfunctioned
- Location: Ahrs
- Part time: 714 hours, 560 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2008111003342

## Discrepancy

FL390 AP/FAIL, ATT FAIL, HDG FAIL COPILOTS SIDE STBY HSI FAIL.  YAW DAMP WOULD NOT RE-ENGAGE.   WHEN PUSHING TCS BUTTON FOR FLIGHT DIRECTOR AP FAIL LIGHT WOULD ILLUMINATE AND COULD BE EXTINGUISHED BY PRESSING AP DISCONNECT BUTTON. REMOVED AND REPLACED NR 2 AHRS UNIT. OP CHECK GOOD. IAW MM 34-21-01.

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