Control Wheel; Control Wheel (Figure 5-1); Elevator - BOMBARDIER LEARJET 40 Pilot's Manual

Pilot's Manual

CONTROL WHEEL

Each flight station is equipped with a U-shaped control wheel. The pi-
lot's control wheel is equipped with a disconnect assembly which em-
ploys a red lever labeled ROLL DISC located on the inboard side of the
control wheel hub (Figure 5-1). Each control wheel contains the follow-
ing switches: Control Wheel Trim, Control Wheel Master (MSW), MIC,
IDENT, Touch Control Steering (TCS), and Checklist Line Advance.
CONTROL WHEEL
TRIM SWITCH
MIC
SWITCH
(NOT SHOWN)

ELEVATOR

Movement of the control columns is mechanically translated into eleva-
tor surface movement through levers, bellcranks, sectors, cables, and
pushrods. The elevator control system consists of two parallel control
circuits. The two control circuits are normally connected together via
forward and aft disconnect assemblies in which either control column
moves both the left and right elevator surfaces in union. A mechanical
up/down spring is also used in the system to augment high and low
speed trim ability of the airplane. If a jam occurs in either mechanical
control circuit, an elevator disconnect feature is incorporated into the
system.
5-2
ROLL DISC LEVER
(PILOT'S SIDE ONLY)
ARM
BUTTON
CONTROL WHEEL
MASTER SWITCH
(MSW)
CONTROL WHEEL
Figure 5-1
TOUCH
CONTROL
STEERING
(TCS)
CHECKLIST
LINE ADVANCE
IDENT
SWITCH
PM-132A