Garmin GFC 600 - Pre-Flight Test (PFT)

GFC 600 AFCS Part 23 AML STC Maintenance Manual Page 55
190-01938-00 Revision 13
9.3 Pre-Flight Test (PFT)
Pre-Flight Test (PFT) is accomplished automatically by the GFC 600 AFCS after the system is
powered up in normal mode and after the splash screen is acknowledged.
1. Apply electrical power to the aircraft.
2. After the GMC 605 displays the splash screen, push the HDG button to continue to
normal mode operation.
3. Verify the following events occur during PFT.
a. GMC displays PFT on the display
b. GDU (if installed) displays PFT in black text on a white background at the top of
the display
c. The three LED’s on the face of the GMC 605 (next to the AP, FD, and YD
buttons) are illuminated yellow for one second, then red for one second.
d. The GI 285 (if installed) illuminates all lateral mode annunciations in yellow for
one second, followed by AP/YD/TRIM annunciations for one second, the all
vertical mode annunciations in yellow for one second, then AP/YD/TRIM
annunciations in red for one second.
4. Verify the following occur at the conclusion of PFT.
a. Normal autopilot disconnect tone (two high-low tones approximately two seconds
in duration) is played through the cockpit speaker and headphones.
b. PFT is removed from the GMC 605 and GDU (if installed).
c. ESP roll indices are displayed at the appropriate left and right roll attitude on the
GDU (if installed). Refer to the appropriate model-specific installation manual
addendum for model specific information on the placement of the roll indices.