Tecnam P2010 - Page 411

AFMS N°D07 FOR GARMIN GFC700 AUTOPILOT AND VARIABLE PITCH PROPELLER EQUIPPED
AEROPLANES
Page APV1-21
Section 1 – General-
AUTOPILOT DESCRIPTION
Ed. 1, Rev.0
12.2 PILOT CONTROL WHEEL AND THROTTLE BUTTONS
On the left side of pilot‘s and copilot‘s control wheels there are two PTT switches (the one
on pilot control wheel is shown below as (1)) that, when pushed, allow radio transmis-
sion. These switches are momentaneous ones thus acting in such a way that when they
are released the active COM device returns to the non- transmitting state. These
switches are already installed in the basic aircraft which is not equipped with the autopilot.
The following additional dedicated AFCS controls are located on the pilot control
wheel, separately from the MFD, and on the throttle handle:
AP DISC Switch:
Disengages the autopilot and interrupts pitch trim operation
This switch may be used to mute the aural autopilot dis-
connect alert.
AP Trim Switch:
Used to command manual electric trim. This composite
switch is split into left and right sides. The left switch
is the ARM contact and the right switch controls the DN
(forward) and UP (rearward) contacts. The AP TRIM
ARM switch can be used to disengage the autopilot and
to acknowledge an autopilot disconnect alert and mute
the associated aural tone. Manual trim commands are
generated only when both sides of the switch are oper-
ated simultaneously. If either side of the switch is ac-
tive separately for more than three seconds, MET func-
tion is disabled and ‗PTRM‘ is displayed as the AFCS
Status Annunciation on the PFD. The function remains
disabled until both sides of the switch are inactivated.
CWS Button:
While pressed, the Control Wheel Steering allows manual
control of the aircraft while the autopilot is engaged and
synchronizes the flight director‘s Command Bars with the
current aircraft pitch (if not in Glideslope Mode) and roll
(if in Roll Hold Mode). Upon release of the CWS But-
ton, the flight director may establish new reference
points, depending on the current pitch and roll modes.
CWS operation details are discussed in the flight director
modes section.
TO/GA Switch:
The GA Switch is located on the throttle handle.
Go Around and Takeoff modes are coupled pitch and roll
modes and are annunciated as both the vertical and lateral
modes when active. In these modes, the flight director
commands a constant set pitch attitude and keeps the
wings level. The GA Switch is used to select both modes.
The mode entered by the flight director depends on wheth-
er the aircraft is on the ground