Wing Leveler; Check List; And; Details - Cessna Skyhawk Owner's Manual

WING LEVELER
Jecdon H
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.
DESCRIPTION AND OPERATING DETAILS
Vacuum pressure, from
the
engine-driven
vacuum punip, is routed from
the
Turn
Coordinator
to
cylinder-piston
servo
units
attached
to the
aileron
control system. As
the
airplane deviates from a wiiig level attitude,
vacuum pressure in
the
servo units is increased or relieved as needed
to
The following
paragraphs describe
the
systems
and equipment whose
actuate the ailerons
to
oppose
the deviations.
function
and operation is not obvious when sitting in
the
airplane.
This
section
also
covers in somewhat
greater detail some
of
the
items listed
A separately mounted
push-pull
control knob, labeled "WING LVLR,
"
in Check
List form in
Section
I
that
require further explanation.
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
FUEL SYSTEM.
and let-down.
Fuel is supplied
to the
engine from
two tanks,
one in each wing. With
the
fuel selector
valve on "BOTH,
" the total
usable
fuel for all flight
con-
ditions is 38 gallons for
the
standard
tanks
and 48 gallons for
the
optional
OPERATING
CHECK LIST
longrangetanks.
Fuel from
each wing
tank
flows by gravity
to
a selector valve.
De-
TAKE-OFF.
pending
upon
the
setting of
the
selector valve, fuel from
the
left, right,
or both
tanks
flows
through
a fuel strainer
and carburetor
to the.engine
(1) "WING LVLR" Control Knob
--
Check in off position
(full in).
induction
system.
CLM &
IMPORTANT
The fuel selector
valve should be in
the
"BOTH"
position
(1) Adjust elevator
trim
for climb.
for
take-off,
climb, landing,
and
maneuvers
that
involve
(2)
"WING LVLR"
Control Knob
--
Pull control
knob "ON." prolonged slips
or skids.
Operation from either
"LEFT"
(3) "ROLL TRIM" Control Knob
--
Adjust for wings level
attitude.
or "RIGHT"
tank
is reserved for cruising flight.
CR UISE.
NOTE
When
the
fuel selector valve handle is in
the
"BOTH"
(1) Adjust power and elevator
trim
for level flight. position in cruising flight, unequal
fuel
flow from each
(2) "ROLL TRIM" Control Knob
--
Adjust as desired.
tank
may occur if
the
wings
are
not maintained exactly
level. Resulting
wing heaviness can be alleviated
DESCENT.
gradually by
turning the
selector valve handle
to the
tank
in
the
"heavy" wing.
(1) Adjust power
and
elevator
trim
for desired speed and rate of
descent.
For fuel system
servicing
information, refer
to
Lubrication and
(2) "ROLL TRIM" Control Knob
--
Adjust as desired. Servicing
Procedures in
Section
IV.
6-6
2-1