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CESSNA
MODEL 172N
SECTION 1
GENERAL
It i s expressed in either degrees Celsius or degrees Fah-
-
renheit.
Standard
Standard Temperature i s 15OC at sea level pressure alti-
Tempera-
tude and decreases by 2 O C for each 1000 feet of altitude.
ture
Pressure
Pressure Altitude i s the altitude read from an altimeter
Altitude
when the altimeter's barometric scale has been set to 29.92
inches of mercury (1013 mb).
ENGINE POWER TERMINOLOGY
BHP
Brake Horsepower i s the power developed by the engine.
RPM
Revolutions Per Minute i s engine speed.
Static
Static RPM i s engine speed attained during a full-throttle
RPM
engine runup when the airplane i s on the ground and
stationary.
AIRPLANE PERFORMANCE A N D FLIGHT PLANNING
TERMINOLOGY
-
Demon-
Demonstrated Crosswind Velocity is the velocity of the
strated
crosswind component for which adequate control of the
Crosswind
airplane during takeoff and landing was actually demon-
Velocity
strated during certification tests. The value shown is not
considered to be limiting.
Usable Fuel
Usable Fuel i s the fuel available for flight planning.
Unusable
Unusable Fuel i s the quantity of fuel that can not be safely
Fuel
used in flight.
GPH
Gallons Per Hour i s the amount of fuel (in gallons)
consumed per hour.
NMPG
Nautical Miles Per Gallon i s the distance (in nautical
4 - -
miles) which can be expected per gallon of fuel consumed
at a specific engine power setting and/or flight configura-
tion.
g
1 July 1979
g
is acceleration due to gravity.
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