AFMS N°D01 FOR GARMIN GFC700 AUTOPILOT INSTALLATION AND
RNAV/RNP NAVIGATION ELIGIBILITY
AUTOPILOT FUNCTIONS
angle is increased, a region of an increasing force as a function of bank angle is
entered. The envelope protection system adds bank stability in this region. As the
bank angle is increased further, a constant force is applied to right the airplane.
See the below figure for an example of the ESP engagement limits.
VMO
Exceeding VMO will result in ESP applying force to raise the nose; when the high
speed condition is remedied, ESP force is no longer applied.
Engage Limit: 165 KIAS
Upper Limit: 168 KIAS
Lower disengage Limit: 160 KIAS
13.2 USP
Underspeed Protection (USP) is a flight director function that reacts to underspeed
conditions, designed to discourage aircraft operation below minimum established
airspeeds.
Pilot will be warned of impending low speed conditions, and if no action will be
taken FD will directly react in a way that allows the A/P to remain engaged but
prevents the airplane from stalling.
USP function has been developed in order to warn pilot of impending
low speed conditions, and if no action will be taken FD will directly
react in a way that allows the Autopilot to remain engaged but pre-
vents the airplane from stalling.
Pilot action is still expected at first warning of low airspeed conditions
in order to prevent a low speed conditions, so to maintain normal
flight.
When autopilot is engaged USP will provide the pilot with au-
ral/visual cues to make him aware of an impending stall and will
drive the servos in order to prevent stall.
When autopilot is not engaged and only Flight director is active, USP
will provide the pilot with aural/visual cues to make him aware of an
impending stall but servos will not be driven.
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