# SDR DXTA200601357

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2006
- Submitted: April 24, 2006
- Operation: Air carrier
- Aircraft: [N664QS](https://openairdocs.org/aircraft/N664QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605264
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Ahrs
- Part number: 1421851100
- Part serial: 1110
- Condition: Defective
- Location: Cockpit
- Part time: 3,841 hours, 2,984 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200601357

## Discrepancy

ON TAKEOFF ROLL COPILOT ATT FAIL AND HDG FAIL PFD ENUNCIATORS ILLUMINATED WITH CHECK PFD 2 ENUNCIATOR COULD NOT RESET.  REMOVED FAULTY AHRS UNIT NR 2 S/N 1110 AND INSTALLED UNIT S/N 2020 REPAIRED BY FAA REPAIR STATION NR M31R0300 SYSTEM OPERATIONAL CHECKS GOOD IAW MM 34-21-01.

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