# SDR VNAA9811006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N427JS](https://openairdocs.org/aircraft/N427JS), registered now
- Make and model: Dorner DO328100
- Aircraft serial: 3039
- Engine: Pwa PW119B
- Propeller: Hartzl HDE6C3B
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Ahrs
- Part number: HG2010AC02
- Condition: Failed
- Location: E & E Compt
- Part time: 74,818 hours
- Stage of operation: TX
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA9811006

## Discrepancy

DURING THE TAXI FOR TAKEOFF, A NUMBER ONE ATTITUDE HEADING REFERENCE UNIT (AHRS) FAILURE WARNING MESSAGE ILLUMINATED.  THE AIRCRAFT RETURNED TO THE GATE.  OUTSTATION MAINTENANCE INSPECTED AND APPROVED THE AIRCRAFT FOR A FERRY FLIGHT TO PIT.  THE FERRY WAS EXECUTED WITHOUT ANY PROBLEMS.  PIT MAINTENANCE INSPECTED AND REPLACED THE NUMBER ONE AHRS UNIT, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 34-21-10.  OPERATIONAL CHECKS WERE COMPLETED.

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