Cessna 17273274 Pilot Operating Handbook page 43

CESSNA
MODEL 172N
In an emergency on airplanes not equipped with an
alternate static source, cabin pressure can be supplied to
the static pressure instruments by breaking the glass in
the face of the rate-of-climb indicator.
With the alternate static source on, adjust indicated airspeed slightly
during climb or approach according to the alternate static source airspeed
calibration table in Section
tion, causing the airplane to be flown at the normal operating speeds.
Maximum airspeed and altimeter variation from normal is
30 feet over the normal operating range with the window(s) closed. With
window(s) open, larger variations occur near stall speed. However,
maximum altimeter variation remains within
SPINS
Should an inadvertent spin occur, the following recovery procedure
should be used:
1. RETARD THROTTLE TO IDLE POSITION.
2. PLACE AILERONS IN NEUTRAL POSITION.
3.
APPLY AND HOLD FULL RUDDER OPPOSITE TO THE DIREC­
TION OF ROTATION.
4.
JUST AFTER THE RUDDER REACHES THE STOP, MOVE THE
CONTROL WHEEL BRISKLY FORWARD FAR ENOUGH TO
BREAK THE STALL. Full down elevator may be required at aft
center of gravity loadings to assure optimum recoveries.
5.
HOLD THESE CONTROL INPUTS UNTIL ROTATION STOPS.
Premature relaxation of the control inputs may extend the recov­
ery.
6. AS ROTATION STOPS, NEUTRALIZE RUDDER, AND MAKE A
SMOOTH RECOVERY FROM THE RESULTING DIVE.
If disorientation precludes a visual determination of the
direction of rotation, the symbolic airplane in the turn
coordinator may be referred to for this information.
For additional information on spins and spin recovery, see the discus­
sion under SPINS in Normal Procedures (Section 4).
1
July 1979
EMERGENCY PROCEDURES
NOTE
5,
appropriate to vent/window(s) configura­
50
NOTE
SECTION 3
4
knots and
feet of normal.
3-15