# SDR O2GA2020070851301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2020
- Submitted: July 8, 2020
- Operation: Air carrier
- Aircraft: N513UP
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605794
- Aircraft time: 8,340 hours, 6,094 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Ahrs
- Part number: 1451306000
- Part serial: 1250
- Condition: Failed
- Location: Cockpit
- Part time: 388 hours, 248 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/O2GA2020070851301

## Discrepancy

IN CRUISE FLIGHT AUTOPILOT DISENGAGED. 'ATT FAIL' AND 'HDG FAIL' WARNING DISPLAYED ON PFD & MFD.  FMS DISPLAYED 'AHRS-1 HEADING FAIL' AND 'AHRS-1 INPUT FAIL'.  EMERGENCY WAS DECLARED AND DIVERTED TO ALTERNATE AIRPORT.  MAINTENANCE REPLACED THE LEFT AHRS UNIT.  AIRCRAFT WAS RETURNED TO SERVICE.

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