The G5 electronic instrument is capable of operating as a primary attitude indicator, DG or HSI.

The STC approves the installation of the G5 in an existing instrument panel. In the attitude application, the G5 can replace an existing vacuum attitude indicator or rate-of-turn indicator. The G5 can also replace existing vacuum driven DGs or existing HSI, either standalone or in combination with a G5 attitude display. 

The G5 is designed to be installed into a standard 3” instrument hole in place of existing indicators . Other primary flight instruments remain in their current approved locations. Please note that the G5 cannot replace an existing primary attitude indicator that has a Flight Director. However, if the existing attitude indicator is interfaced to the autopilot and it does not include Flight Director, the existing attitude indicator can be moved to the rate of turn indicator location and G5 installed as the primary attitude indicator. Also, for installations that do not install a G5 as the replacement primary attitude indicator, the G5 can be installed as a second attitude indicator in place of the existing rate of turn indicator. However, if the existing rate of turn indicator is interfaced with the autopilot, it cannot be replaced by a G5. The G5 can only be installed in the locations specified in the STC. It is an installer’s responsibility to ensure the installation limitations are considered prior to modifying an aircraft.