Cessna 1973 172 - Maximum Cruise Speed Performance; Stalls; Spins

MAXIMUM CRUISE SPEED PERFORMANCE
75% POWER
ALTITUDE
RPM TRUE AIRSPEED
RANGE
(38 GAL)
SEA LEVEL
5000 ft.
9000 ft.
2490
2600
FULL THROTTLE
123
128
132
575
600
620
nal RPM (with heat off), use the minimum amount of heat (by trial and
error) to prevent ice from forming. Since the heated air causes a richer
mixture, readjust the mixture setting when carburetor heat is to be used
continuously in cruise flight.
The use of full carburetor heat is recommended during flight in heavy
rain to avoid the possibility of engine stoppage due to excessive water in-
gestion or carburetor ice. The mixture setting should be readjusted for
smoothest operation.
In extremely heavy rain, the use of partial carbvu-etor heat (control
approximately 2/3 out), and part throttle (closed at least one inch), may
be necessary to retain adequate power. Power changes should be made
cautiously followed by prompt adjustment of the mixture for smoothest
operation.
STALLS.
The stall characteristics are conventional and aural warning is pro-
vided by a stall warning horn which sounds between 5 and 10 MPH above
the stall in all configurations.
Power-off stall speeds at maximum gross weight and aft c. g. posi-
tion are presented on page 6-2 as calibrated airspeeds since indicated
airspeeds are unreliable near the stall.
SPINS.
Intentional spins are approved in this aircraft in the utility category
only. Although this aircraft is inherently resistant to spins, the foUow-
2-15