Originally Posted by
RVF750
Our Aircraft have latitude limitations in the Part A for that reason. You really do have to wonder if your Avionics designers intended to operate at such high latitudes?
Yes, there are limitations listed in the AFM, in general Above/Below N/S 70. We do not operate above those latitudes at the moment, but we probably will, there is also a Supplement to the AFM which permits ops above/below these latitudes.
I found a techical description regarding the AH-1000 AHRS system. The Specification for the heading is 10 degrees /h in DG-Mode. So obviously there must be some issue in our system.
Will be brought up via Pilatus.
Thank you for your inputs