CESSNA SECTION 4
MODEL 152 NORMAL PROCEDURES
1 July 1978 4-16
75 % POWER 65 % POWER 55 % POWER
Altitude KTAS NMPG KTAS NMPG KTAS NMPG
Sea level 100 16.4 94 17.8 87 19.3
4000 feet 103 17.0 97 18.4 89 19.8
8000 feet 107 17.6 100 18.9 91 20.4
Standard Conditions Zero Wind
Figure 4-3. Cruise Performance Table
The Cruise Performance Table, figure 4-3, shows the true airspeed and nautical miles per
gallon during cruise for various altitudes and percent powers. This table should be used as a
guide, along with the available winds aloft information, to determine the most favorable altitude
and power setting for a given trip.
To achieve the recommended lean mixture fuel consumption figures shown in Section 5, the
mixture should be leaned until engine RPM peaks and drops 25-50 RPM. At lower powers it
may be necessary to enrich the mixture slightly to obtain smooth operation.
Carburetor ice, as evidenced by an unexplained drop in RPM, can be removed by application
of full carburetor heat. Upon regaining the original 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 very heavy rain to avoid the
possibility of engine stoppage due to excessive water ingestion. The mixture setting should be
readjusted for smoothest operation.
FUEL SAVINGS PROCEDURES FOR FLIGHT TRAINING OPERATIONS
For best fuel economy during flight training operations, the following procedures are
recommended.
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