Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual
190-01112-10
Rev. 21
Page 13
1
GENERAL DESCRIPTION
1.1 Introduction
The G5 is an electronic instrument display capable of operating as a primary attitude indicator, backup
attitude indicator with primary rate-of-turn indicator, DG or HSI. This STC approves the installation of
the G5(s) in the existing instrument panel.
In the attitude application, the Garmin G5 indicator can serve as an attitude indicator or rate-of-turn
indicator. The G5 can also serve as a DG or HSI, either standalone or in combination with a G5 attitude
display.
When installed as a DG/HSI with a GAD 29/29B, the G5 can interface with a Garmin GFC 500, Garmin
GFC 600 and Non-Garmin autopilots using the GAD 29B.
The G5 is designed to be installed into a standard 3 1/8” instrument hole in place of the existing
indicators mentioned previously. The other primary flight instruments remain in the current approved
locations. 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 a Flight
Director, that existing attitude indicator can be moved to the rate-of-turn indicator location and the G5
installed as the primary attitude indicator.
Alternatively, for installations that do not install the G5 as a replacement primary attitude indicator, the
G5 can be installed as a second attitude indicator in place of the existing rate-of-turn indicator. 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 this STC. It is the installer’s responsibility to ensure the
installation limitations are considered prior to modifying the aircraft.
NOTE
Throughout this document the term “rate-of-turn indicator” will be used and could be speaking
to either a turn coordinator or turn and bank indicator. Typically these instruments are used to
cross-check the attitude indicator and directional gyro for bank information. However, these
instruments only provide information that the aircraft is in a turn and whether the turn is at the
standard rate (a standard rate turn is 3 degrees per second, or 2 minutes for a full 360-degree
circle). They do not provide information on the bank angle. Regardless of the specific instrument
installed the G5 is capable of replacing either configuration of a turn coordinator or turn and
bank indicator.
The software versions and information in this document are subject to change without notice. Visit
and navigate to the Aviation Product/General Aviation/Indicators/G5 page for current
updates and supplemental information concerning operation of the G5 attitude indicator.
