GRS 7800 AHRS units installed in G1000 equipped King Air 200/B200/300/B300 series aircraft (with G1000 System Software Version 0985.07) are affected.
Heading and/or attitude information may become unavailable when flying north of 65° North latitude.
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 location that is north of 65° North latitude