# SDR HNAA2011100600312

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 24, 2011
- Submitted: October 6, 2011
- Operation: Air carrier
- Aircraft: N936HA
- Make and model: Dhav DHC8102
- Aircraft serial: 145
- Aircraft time: 57,704 hours, 63,993 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Ahrs
- Part number: 7003360941
- Part serial: 093292
- Condition: Failed
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2011100600312

## Discrepancy

AHRS DATA INVALID MESSAGE ON TAKEOFF WITH ASSOCIATED FD AND YD FAILURE. (NR 1 AHRS ALREADY ON MEL).  R & R NR 2 AHRS COMPUTER IAW MM 34-20-06.  OPS CHECKED GOOD.

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