Cessna 172N Operating Handbook page 58

SECTION 4
NORMAL PROCEDURES
CESSNA
MODEL 172N
It is recommended that, where feasible, entries be accomplished at
high enough altitude that recoveries are completed 4000 feet or more above
ground level. At least 1000 feet of altitude loss should be allorred for a
1- turn spin and recovery, while a 6- turn spin and recovery may require
somewhat more than twice that amount. For e>q.mple, the recommended
entry altitude for a 6- turn spin would be 6000 feet above ground level. In
any caser entries should be planned so that recoveries are completed well
above the minimum 1500 feet above ground level required by FAR 91. ?1.
Another reason for using high altitudes for practicing spins is that a
greater field of view is provided which will assist in maintaining pilot
orientation.
The normal entry is made from a power-off stall. As the stall is ap-
proached, the elevator control should be smoothly pulled to the fuil aft
position.
Just prior to reaching the stall rbreak", rudder control in the
desired direction of the spin rotation should be applied so that fulI mdder
deflection is reached almost simultaneously with reaching fulI aft elevator.
A slightly greater rate of deceleration than for normal stall entries, ap-
plication 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 relur-
ation 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
furn spin is adequate and should be used. Up to 2 furns, the spin will pro-
gress to a fairly rapid rate of rotation ard a steep attitude. Application of
recovery controls will produce prompt recoveries (withtn l/4 hrrn). Dur-
irg extended spins of two to three turns or more, the spin will tend to
charge into a spiral, particularly to the right.
This wiU be accompanied
by an increase in airspeed and gravity loads on the airplane.
If this oc-
curs, recovery should be accomplished quickly by leveling the wings and
recovering from the resulting dive.
Regardless of how many furns 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 NEIITRAL.
(2) APPLY AND HOLD FULL RUDDER OPPOSITE TO THE DIREC-
TION OF ROTATIOJI-
(3) JUsr AFTER TIm RUDDER REAcHES THE srop,
MovE THE
CONTROTifrE.EE.I, BRISKLY FoRwARD FAR ENcIJGH To BREAK
THE STALL.
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