Cessna 172N Operating Handbook page 114

SECTION 7
AIRPLANE & SYSTEMS DESCRIPTIONS
C E SSN A
MODEL 172N
bellcrank, Ieft upper and Iower
and lower "V" type corrugated
for the trim tab. The elevator
and lower 'V" type corrugated
right elevator tips incorporate
"V" type corrugated skins, and right upper
skins incorporating a trailing edge cut-out
trim tab consists of a spar, rib, and upper
skins"
The leading edge of both left and
extensions which contain balance weights.
F TI G HT C O N TR O L S
The airplane's
flight control system consists of conventional aileron,
rudder, and elevator control surfaces (see figure ?-1).
The control sur-
faces are manually
operated through mechanical
linkage using a control
wheel for the ailerons
and elevator, and nrdder/brake
pedals for the rud-
d er .
T RI' II S Y S T E IU
A manually-operated elevator trim
system is provided; a rudder
trim system may also be installed (see figure 7-1). Elevator
trimming
is accomplished
through the elevator trim
tab by utilizing the vertical-
ly mounted trim control wheel.
Forward
rotation
of the trim wheel will
trim nose-down;
conversely, aft rotation
wiII trim nose-up.
Rudder
trimming is accomplished
through
a bungee connected to the rudder
control
system and a trim lever, mounted
on the control
pedestal.
Rudder trimming is accomplished by lifting
the trim lever up to clear a
detent, then moving it either left or right
to the desired trim position.
Moving the trim
lever to the right
wiII trim
the airplane nose-right;
conversely,
moving
the lever to the left will trim the airplane
nose-Ieft.
I N ST R U M E N T PA N EL
The i,nstrument panel (see figure 7-2) is designed around the basic
"T"configuration.
The gyros are located immediately in front of the
pilot, and arranged
vertically
over the control column. The airspeed
indicator
and altimeter are Iocated to the left and right of the gyros,
respectively.
The remainder
of the flight instruments
are located
around the basic "T".
Engine
instruments
and fuel quantity
indicators
are near the left edge of the panel.
Avionics equipment is stacked
approximately
on the centerline of the panel, with the right side of the
panel containing
space for additional instruments and avionics equip-
ment.
A subpanel under the primary
instrument
panel contains the
primer,
master and ignition
switches, circuit
breakers, and electrical
switches
on the Ieft side, with the engine controls, light intensity con-
trols, and alternate
static air control
in the center, over the control
7 -8