# SDR DXTA2010102604271

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2010
- Submitted: October 26, 2010
- Operation: Air carrier
- Aircraft: [N686QS](https://openairdocs.org/aircraft/N686QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605661
- Aircraft time: 3,383 hours, 2,653 cycles
- Engine: Pwc PW545B
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 1421851100
- Part serial: 2222
- Condition: Failed
- Location: Ahrs
- Part time: 3,383 hours, 2,653 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2010102604271

## Discrepancy

DURING CLIMB OUT OF 28,000 FT, WITH RT SEAT PILOT FLYING, THE ATTITUDE AND HEADING FAILURE MESSAGE ILLUMINATED IN THE LT SIDE PFD AND THE MFD. THE AUTO-PILOT ALSO FAILED.  PUSHED THE LT SIDE ATTITUDE AND HEADING REVERSIONARY BUTTONS AND THE RT SIDE INFORMATION WAS DISPLAYED AS EXPECTED.   INSPECTED AND FOUND THE AHRS UNIT BAD. R & R WITH A REPAIRED AND MODIFIED UNIT. WORK PERFORMED IN REF TO THE MM 34-21-01 AND THE OPS CHECK OF AUTOPILOT PERFORMED IN REF TO MM 34-26-00.

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