Cessna 172N - Page 115

CESSNA
MODEL
172N
SECTION 7
AIRPLANE
&
SYSTEMS
DESCRIPTIONS
pedestal.
The
right
side of the
subpanel
contains
the wing
flap
switch
Iever
and
position
indicator,
cabin heat
and
vent
controls,
cigar
lighter,
and
map
compartment.
A
pedestal,
installed
below
the
subpanel,
con-
tains
the
elevator
trim
control wheel
and
position
indicator,
and
pro-
vides
a
bracket for the
microphone.
A
rudder
trim
control
lever
may
be installed
below the
trim
wheel
and microphone
bracket,
and
the
fuel
selector
valve
handle
is located
at the
base
of the
pedestal.
A
parking
brake
handle
is mounted
below
the
subpanel
in front
of
the
pilot.
For
details
concerning
the
instruments,
switches, circuit
brealers,
and
controls
on this
panel,
refer
in this
section
to
the
description
of the
systems to which these
items are related.
GROUND
CONTROL
Effective
ground
control
while
taxiing
is accomplished
through
nose
wheel
steering by using
the
rudder
pedals;
left
rudder
pedal
to steer left
and right
mdder
pedal
to steer right.
When a rudder
pedal
is depressed,
a spring-loaded
steering bungee
(which
is connected
to the
nose
gear
and
to
the
mdder
bars) will
turn
the
nose
wheel
through
an arc
of approxi-
mately
10" each
side
of center.
By applying
either
left or
rightbrake,
the
degree
of turn
may
be increased
up to
30"
each
side of
center.
Moving the airplane
by
hand is
most easily
accomplished
by
attaching
a tow
bar
to
the
nose
gear
stnrt. If a
tow bar
is
not available,
or
pushing
is required,
use
the
wing
struts
as
pu.sh
points.
Do
not use
the
vertical
or
horizontal
surfaces
to move
the airplane.
If the airplane
is
to
be towed
by
vehicle,
never turn
the
nose
wheel more
than
30'
either
side of
center
or
stnrctural
damage
to the
nose
gear
could result.
The
minimum turning radius
of
the
airplane,
using
differential
brak-
ing and
nose
wheel steering
during taxi,
is approximately
2T feet
5
L/z
inches.
To
obtain
a
minimum radius
turn
during
grornd
handling,
the
airplane
may
be
rotated around
either main
landing
gear
by
pressing
dorpn
on
a tailcone
bulkhead
just
forward
of the.horizontal
stabitizer
to raise
the
nose
wheel off the
ground.
WING
FtAP
SYSTEM
The
wing flaps
are of the
single-slot type
(see
figure
Z-3),
and
are
extended
or retracted
by
positioning
the wing
flap
switch
lever
on the
instrument panel
to
the
desired
flap
deflection
position.
The switch
lever
is
moved up or
down in a slotted
panet
that
provides
mechanical
stops
at
the
10" and
20o
positions.
For
flap
settings
greater
than
10o.
7-9