190-02011-11 Rev. 2
GFC 600 Autopilot Installed in Piper PA-46-310P/350P
Page 45 of 46
GMC 605 Messages
SET HDG=CRS
When the GFC 600 is configured to use a DG (not an HSI), the heading bug
must be set to the desired track or navigation course when in NAV or
APPROACH modes. This message will be displayed continuously when
NAV or APPROACH modes are active.
VNV KEY STK
Vertical Navigation Mode key stuck – System has sensed VNV key input for
30 seconds or longer.
VS KEY STK
Vertical Speed Mode key stuck – System has sensed VS key input for 30
seconds or longer.
YD FAIL
Yaw Damper has failed. Amber YD LED flashes for 10 seconds and
becomes steady. If installed, the GI 285 YD indicator illuminates yellow.
YD KEY STK
Yaw Damper key stuck – System has sensed YD key input for 30 seconds
or longer. Yaw damper is inoperative.
LED ANNUNCIATOR LIGHTS
GMC 605 / GI 285 GREEN LED LIGHTS
AP
Steady Green AP LED - Autopilot is engaged and functioning.
FD
Steady Green FD LED - Flight Director is displayed and functioning.
(There is no FD indication on the GI 285)
YD
Steady Green YD LED - Yaw Damper is operating
GMC 605 / GI 285 AMBER LED LIGHTS
AP
Flashing Amber AP LED for 5 seconds, then extinguish – Normal AP disconnect
OR;
Flashing Amber AP LED displayed on the GMC, and flashing yellow TRIM displayed on
the GI 285, for 10 seconds then steady, accompanied by a GMC 605 message for ELE,
AIL, or RUD mistrim message – See abnormal procedure for mistrim message.
GMC 605 / GI 285 AMBER LED LIGHTS (continued)
FD
Flashing Amber FD LED for 10 seconds, then extinguish – The coupled lateral or
vertical mode has been lost, and the GMC has reverted to ROL mode (if lateral mode
was lost) or PIT mode (if vertical mode was lost).
Summary of Contents for GFC 600
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