Cessna 172R, Operating Handbook

Page: 143 / 500

CESSNA
MODEL 172R
SECTION 4
NORMAL
PROCEDURES
The normal entry is made from
a power
off stall. As the stall
is
approached, the elevator control should be smoothly pulled
to the
full aft position. Just prior to reaching the stall "break", rudder
control in the desired direction of the
spin rotation should be applied
so that full rudder deflection is reached almost simultaneously with
reaching full aft elevator. A slightly greater rate of deceleration than
for normal stall entries, application of ailerons in the direction of the
desired spin, and the use of power
at the
entry
will
assure
more
consistent and positive entries
to
the spin. As the airplane
begins to
spin, reduce the power
to
idle and return the ailerons
to
neutral.
Both elevator and
rudder controls should be held full with the spin
until the spin recovery is initiated. An inadvertent
relaxation of either
of these controls could result in the
development of
a nose
down
spiral.
For the purpose of training in spins and spin
recoveries, a
1 or 2
turn
spin
is adequate and should be used. Up
to 2
turns,
the spin
will
progress
to
a
fairly
rapid
rate of rotation and a steep attitude.
Application of recovery
controls will produce prompt recoveries
(within 1/4 turn). During extended spins
of two to three
turns
or
more, the spin will tend
to change
into a spiral,
particularly to the
right. This will be
accompanied by
an
increase in airspeed
and
gravity loads on
the airplane. If this occurs, recovery
should be
accomplished promptly but smoothly by leveling
the wings and
recovering from
the resulting dive.
Regardless of how
many
turns
the spin
is held
or
how it is
entered, the following recovery technique should
be used:
1. VERIFY THAT THROTTLE IS IN IDLE POSITION AND
AILERONS ARE NEUTRAL.
2. APPLY AND HOLD FULL RUDDER
OPPOSITE TO THE
DIRECTION OF ROTATION.
3.
JUST
AFTER THE RUDDER REACHES
THE STOP, MOVE
THE CONTROL WHEEL
BRISKLY
FORWARD FAR ENOUGH
TO BREAK THE STALL.
4. HOLD THESE
CONTROL INPUTS UNTIL ROTATION
STOPS.
5. AS ROTATION STOPS,
NEUTRALIZE RUDDER,
AND MAKE
A SMOOTH
RECOVERY FROM THE RESULTING DIVE.
Revision 7
4-31