WannFly
Final Approach
https://www.aopa.org/news-and-media/all-news/2017/march/29/garmin-g5-hsi-receives-receives-stc
The G5 had been approved in July 2016 as a non-technical standard order attitude indicator. The latest supplemental type certificate, announced March 29, expands that approval and enables aircraft owners to install two G5s and eliminate the dependency on the airplane’s vacuum system for attitude and heading information. When paired with select VHF nav/coms or GPS navigators, the G5 can be considered primary for displaying magnetic heading, VOR/LOC guidance, and/or GPS course guidance, as well as distance and groundspeed, Garmin said.
The G5 had been approved in July 2016 as a non-technical standard order attitude indicator. The latest supplemental type certificate, announced March 29, expands that approval and enables aircraft owners to install two G5s and eliminate the dependency on the airplane’s vacuum system for attitude and heading information. When paired with select VHF nav/coms or GPS navigators, the G5 can be considered primary for displaying magnetic heading, VOR/LOC guidance, and/or GPS course guidance, as well as distance and groundspeed, Garmin said.