Elevator Disconnect; Elevator Disconnect (Figure 5-2) - BOMBARDIER LEARJET 40 Pilot's Manual

ELEVATOR DISCONNECT

In the event of an elevator jam, the two cable circuits can be disconnect-
ed by pulling the red ELEV DISC T-handle (Figure 5-2) located at the
left-forward edge of the pedestal. The airplane will then be controlled
with the unjammed elevator. The forward and aft disconnect assem-
blies are dog clutch devices that are operated simultaneous by the han-
dle being pulled. When the ELEV DISC T-handle is pulled, a cable
connected to the handle shaft is pulled which disengages the forward
clutch thereby disengaging the two control columns. Electrical switch-
es sense the movement of the shaft and signal the aft disconnect to dis-
engage.
When the handle is pulled to full extension, it must be rotated 90°,
either clockwise or counterclockwise, to lock it in the disconnect posi-
tion. The elevator forward disconnect is a mechanical clutch mecha-
nism located on the torque tube between the control columns. The
clutch is held open when the ELEV DISC T-handle is pulled and locked
in the extended position. This will disconnect and prevent engagement
of the autopilot.
PM-132A
E
L
E D
YS T ST R S T
E
L I
V
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A TI
E
V C
D
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S S A
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C DC
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F AP
L
L
E
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E D
E
L I
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V C
D
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U
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ELEVATOR DISCONNECT
Figure 5-2
P T R M
AS
G F
E R
A E
FF
R E
I E F
D T
A
U D R
SQ
L
TS B O T
OD S L
E R
OFF
P D
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S AB E U L O AL 0 0 BS
S W
R D O TL
O BUS H N
4 4
U E A E
ON
1 8 7 8
W NG R W G
FLAPS
D MUTE
U
P
E
D E
8
CU OFF 2 0
2
0
2 0
M D JO ST CK
D
N
Pilot's Manual
5-3