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Aviation Alerts and Advisories

Service Alert 1465 Rev B: GRS 7800 AHRS Operation Limitation North of 65° North Latitude

 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

Download 1465B