AFMS N°D01 FOR GARMIN GFC700 AUTOPILOT INSTALLATION AND
RNAV/RNP NAVIGATION ELIGIBILITY
AUTOPILOT FUNCTIONS
13.2.2 NON ALTITUDE CRITICAL MODES (VS, VNAV, IAS)
When the airspeed trend vector (dedicated algorithm) reaches 65 +/- 2 KIAS a
single aural ―AIRSPEED‖ will sound, alerting the pilot to the impending under-
speed condition, which requires pilot action.
If the aircraft is allowed to decelerate to an IAS below the minimum commanda-
ble autopilot airspeed (65 Kts for P2010), a red ―UNDERSPEED PROTECT AC-
TIVE‖ annunciation appear to the right of the vertical speed indicator.
Vertical flight director mode will change from active to armed, Flight Director
and autopilot will command the aircraft to pitch down until reaching a pitch atti-
tude at which IAS equals at least the minimum commandable autopilot airspeed,
avoiding the development of a stall condition.
When airspeed increases (as a result of adding power/thrust) to an IAS above 70
KIAS, USP will then disengage and the autopilot will command the aircraft to
pitch up until recapturing the vertical reference (vertical vertical flight director
mode will switch from white armed to green active).
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