Garmin G3X Touch Maintenance Manual page 114

8. Verify each radio is functioning properly by completing the following:
a. For each VHF COM radio, monitor one local frequency, one remote frequency, and one
unused frequency.
b. Verify no unintended squelch breaks or audio tones interfere with communications.
c. For each VHF NAV radio, monitor one local frequency, one remote frequency, and one
unused frequency.
d. Verify there are no guidance errors.
e. Verify no audio tones interfere with the station ID.
f. For each GPS Navigator, enter a simple flight plan and display as appropriate. i.e.
Navigator Display, PFD, CDI etc., if installed.
g. Verify there are no guidance errors.
9. If an EI FT-60 or an EI FT-90 fuel flow sensor is installed, verify the fuel flow indication is accurate
and the indication does not fluctuate or invalidate the display.
a. Transmit various modulating tones on each COM radio (e.g. Whistling).
b. See section the G3X Touch EFIS Part 23 AML STC Installation Manual (190-02472-01)
for details if the fuel flow indication fluctuates.
NOTE
EMI check of the fuel flow must be performed with the engine running.
10. Verify all other avionic systems are functioning properly.
Maintenance Manual
G3X Touch EFIS Part 23 AML STC
Page 104
190-02472-02
Revision 2