User Guide

Garmin G1000 AFCS Pilot’s Guide for Beechcraft A36/G36
190-00609-00 Rev. B
9-7
FD MODES
9.3 FLIGHT DIRECTOR MODES
Flight Director modes are normally selected indepen-
dently for the pitch and roll axes. Unless otherwise speci
-
fied, all mode keys are alternate action (i.e. press on, press
off).
PITCH MODES
The GFC 700 AFCS offers the following pitch modes:
• Pitch Hold (default)
• Altitude Hold
• Vertical Speed
• Flight Level Change
• Glideslope
• Go Around
Table 9.3.1 equates each pitch mode to the respective
key or switch, and gives accompanying mode annuncia
-
tions. Mode annunciations for pitch modes are shown in
green during normal operation.
Mode
Key
Pitch
Mode
Annunciation
Window
{default} Pitch Hold PIT
ALT Altitude Hold ALT FT nnnnn
VS Vertical Speed VS FPM nnnn
FLC Flight Level Change FLC KT nnn
APR Glideslope GS
GO AROUND Go Around GA
Table 9.3.1 Pitch Modes
Overspeed Protection
While Vertical Speed, Flight Level Change, or default
Pitch Hold modes are selected, airspeed is monitored by
the Flight Director. In these modes, pitch commands
are limited to provide overspeed protection. Overspeed
protection occurs in situations where the Flight Director
cannot acquire and maintain the pitch mode reference for
the selected pitch mode without exceeding the certified
maximum Autopilot airspeed.
When in overspeed mode, the airspeed reference box
appears above the airspeed tape, flashing alternatively be-
tween the annunciations depicted in the figure below:
Figure 9.3.1 Overspeed Annunciations
When an Autopilot overspeed warning occurs, the pi-
lot should reduce engine power and/or adjust the pitch
reference to slow the aircraft. When the overspeed con-
dition is resolved, the annunciation disappears and the
previous pitch mode resumes control.