WING
LEVELER
A wing
leveler
may
be
installed
to augment the
lateral stability
of
the
airplane.
The
system
uses the Turn Coordinator
for roll
and
yaw
sensing.
Vacuum
pressure, from
the
engine-driven
vacuum pump, is routed from
the Turn Coordinator to
cylinder-piston servo
units attached to the
aileron
control system.
As the
airplane
deviates
from
a
wing
level attitude,
vacuum
pressure
in the
servo
units
is increased or relieved
as needed to
actuate
the
ailerons
to oppose the deviations.
A
separately
mounted
push-pull control
knob,
labeled
"WING
LVLR",
is provided
on
the left side
of
the
instrument
panel to
turn
the
system
on
and
off. A
"ROLL TRIM"
control
knob on
the
Turn
Coordinator is used
for manual
roll trim control
to compensate
for asymmetrical
loading
of
fuel and
passengers,
and to optimize
system performance
in climb,
cruise
and
let-down.
OPERATING
CHECK
LIST
TAKE-OFF.
(1)
"WING
LVLR" Control
Knob
--
Check in
off
position (full in).
CLIMB.
(1)
Adjust
elevator
and
rudder trim for
climb.
(2)
"WING
LVLR" Control
Knob
--
Pull control
knob
"ON."
(3)
"ROLL TRIM" Control
Knob
--
Adjust
for
wings level attitude.
CRUISE.
(1)
Adjust power and
elevator
and
rudder trim for
level
flight.
(2)
"ROLL TRIM" Control
Knob
--
Adjust as
desired.
DESCENT.
(1)
Adjust power and
elevator
and
rudder trim for desired
speed and
rate
of
descent.
(2)
"ROLL TRIM" Control
Knob
--
Adjust as
desired.
7-13
Summary of Contents for 182 1973
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