SECTION 2
CESSNA
LIMITATIONS
MODEL 172RG
POWER PLANT INSTRUMENT MARKINGS
Power plant instrument markings and their color code significance
are shown in figure 2-3.
RED LINE
GREEN ARC
RED LINE
INSTRUMENT
MINIMUM
NORMAL
MAXIMUM
LIMIT
OPERATING
LIMIT
Tachometer:
S.L. to 7500 Ft
- - -
2100 - 2500
2700 RPM
7500 ft. and above
(inner arc)
2100 - 2700
Manifold Pressure
- - -
(outer arc)
15 - 25
- - -
Oil Temperature
- - -
in. Hg
100° - 245°F
245°F
Cylinder Head
- - -
200° - 500°F
500°F
Temperature
Fuel Pressure
0.5 psi
0,5 - 8.0 psi
8.0 psi
Oil Pressure
25 psi
60 - 90 psi
100 psi
Suction
---
4.5 - 5.4
---
Fuel Quantity
E
Hg
_ -
(2 Gal. Unusable
Each Tank)
Figure 2-3. Power Plant Instrument Markings
WEIGHT LIMITS
CESSNA
SECTION 2
MODEL 172RG
LIMITATIONS
INTRODUCTION
Section 2 includes operating limitations, instrument markings, and
basic placards necessary for the safe operation of the airplane, its engine,
standard systems and standard equipment. The limitations included in
this section and in Section 9 have been approved by the Federal Aviation
Administration. Observance of these operating limitations is required by
Federal Aviation Regulations.
NOTE
Refer to Section 9 of this Pilot's Operating Handbook for
amended operating limitations, operating procedures,
performance data and other necessary information for
airplanes equipped with specific options.
NOTE
The airspeeds listed in the Airspeed Limitations chart
(figure 2-1) and the Airspeed Indicator Markings chart
(figure 2-2) are based on Airspeed Calibration data shown
in Section 5 with the normal static source, with the
exception of the bottom of the green and white arcs on the
airspeed indicator. These are based on a power-off air-
speed calibration. If the alternate static source is being
used, refer to the airspeed calibration variations between
the normal and alternate static sources as shown in
Section 5.
Your Cessna is certificated under FAA Type Certificate No. 3A17 as
Cessna Model No. 172RG.
1 July 1979
2
-
3
2-6
1 July 1979
