Super 80 Professional – AOM
AUTO-FLIGHT
Section 8 Page 3
Super 80 Professional – Aircraft Operating Manual
Coolsky, 2018
Speed control
With the speed control function active the
aircraft will pitch up/down to lose/gain
speed. Speed control inputs for attitude
control are displayed by the FD command
bars and fast/slow indicator on the PFD. IAS
Hold mode and Mach Hold mode are
available.
IAS and Mach Hold mode are used during
climb and descent to maintain a constant
airspeed.
During take-off mode of operation, the FD
command bars on the PFD will command a
pitch attitude to maintain V
2
+10 KIAS for two
engine operation.
During go-around mode, the FD command
bars on the PFD will command the go-
around speed, which is the same as landing
approach speed.
Note: The default P3D TO/GA mode is used
for take-off and go-around operation.
Autothrottle
The autothrottle function automatically
positions the throttles to maintain airspeed or
engine thrust as required for the operational
mode selected. The autothrottle function will
control the throttles for the following
maneuvers:
•
take-off
•
climb
•
cruise
•
holding
•
approach
•
flare (not simulated, manually retard
the throttles)
•
go-around
The autothrottle function is engaged by
moving the AUTO THROT switch from OFF to
AUTO THROT position. When the autothrottle
function is disengaged the THROTTLE
warning light on the FMA will come on.
A clutch mechanism permits manual
positioning of the throttles without
disengaging the autothrottle function.
However, the throttles should not be
manually positioned, when the ATS is active,
except when in CLMP mode or, during
descent, when the autothrottle FMA
annunciates LOW LIM. Overriding the
autothrottle may cause excessive clutch
wear requiring extensive down time to
replace the autothrottle servo drive
assembly.
Altitude Advisory System
The Altitude Advisory System automatically
alerts the crew that the airplane is
approaching the preselected altitude or
that the airplane is deviating from a
previously selected and captured altitude.
An advisory light on the altimeters provides
the alert for either of the above situations.
The advisory light will come on steady when
the airplane is 750 feet from the selected
altitude. The light will then stay on until the
airplane is within 250 feet of the selected
altitude.
If the airplane deviates from the acquired
altitude with more than 250 feet, the
advisory light will come on flashing,
accompanied by an aural tone alert
followed by the spoken word “Altitude”.