Tecnam P2010 - Page 201

AFMS N°D01 FOR GARMIN GFC700 AUTOPILOT INSTALLATION AND
RNAV/RNP NAVIGATION ELIGIBILITY
Page 1A-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 transmission. 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 disconnect
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 dis-
connect alert and mute the associated aural tone. Manual trim
commands are generated only when both sides of the switch
are operated simultaneously. If either side of the switch is ac-
tive separately for more than three seconds, MET function is
disabled and ‗PTRM‘ is displayed as the AFCS Status Annun-
ciation 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 con-
trol of the aircraft while the autopilot is engaged and synchro-
nizes the flight director‘s Command Bars with the current air-
craft pitch (if not in Glideslope Mode) and roll (if in Roll Hold
Mode). Upon release of the CWS Button, 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.