PRODUCTS AFFECTED: GRS 7800 AHRS units installed in G1000 equipped King Air 200/B200/300/B300 aircraft are affected.
ISSUE: Heading and/or attitude information may become unavailable when flying north of 65° North latitude.
PILOT ACTION: To prevent the potential loss of attitude and heading displays, activate DG Free Mode during the following circumstances:
When flying north of 65° North latitude
Immediately after power on when taking off from a loca…