Specifications

SECTION 4 CESSNA
NORMAL PROCEDURES MODEL 172R NAV III
GFC 700 AFCS
U.S.
CRUISE (Continued)
CRUISE PERFORMANCE TABLE
CONDITIONS:
Standard Conditions Zero Wind
Figure 4-3
The Cruise Performance charts in Section 5 provide the pilot with
cruise performance at maximum gross weight. When normal cruise is
performed at reduced weights there is an increase in true airspeed.
During normal cruise at power settings between 60% and 80%, the true
airspeed will increase approximately 1 knot for every 150 pounds below
maximum gross weight. During normal cruise at power settings below
70%, the true airspeed will increase approximately 1 knot for every 125
pounds below maximum gross weight.
The fuel injection system employed on this engine is considered to be
non-icing. In the event that unusual conditions cause the intake air filter
to become clogged or iced over, an alternate intake air door opens
automatically for the most efficient use of either normal or alternate air,
depending on the amount of filter blockage. Due to the lower intake
pressure available through the alternate air door or a partially blocked
filter, engine RPM can decrease from a cruise power setting. This RPM
loss should be recovered by increasing the throttle setting to maintain
desired power.
(Continued Next Page)
ALTITUDE 80% POWER 70% POWER 60% POWER
FEET KTAS NMPG KTAS NMPG KTAS NMPG
Sea Level 113 12.3 108 13.4 100 14.5
4000 117 12.8 111 13.9 103 14.9
8000 122 13.3 115 14.3 105 15.3
172RPHBUS-00
4-34