# SDR HNAA2017051200164

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2017
- Submitted: May 12, 2017
- Operation: Air carrier
- Aircraft: N326EN
- Make and model: Dhav DHC8311
- Aircraft serial: 234
- Aircraft time: 50,628 hours, 58,384 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Ahrs
- Condition: False Indication
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2017051200164

## Discrepancy

DURING TAXI, AHRS DATA INVALID MESSAGE FOLLOWED BY ADI ROLL MISMATCH AND THEN CAPTAIN`S ADI ROLLED.  PERFORMED AHRS OPERATIONAL CHECK, OPS CHECKED GOOD. OK FOR SERVICE.

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