Cessna 152 1978, Pilot Operating Handbook

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CESSNA AIRCRAFT COMPANY FOR TRAINING USE ONLY
MODEL 152 1-9
METEOROLOGICAL TERMINOLOGY
OAT Outside Air Temperature is the free air static temperature. It is expressed in
either degrees Celsius (formerly Centigrade) or degrees Fahrenheit.
Standard Temperature Standard Temperature is 15°C at sea level pressure altitude and decreases
by 2°C for each 1000 feet of altitude.
Pressure Altitude Pressure Altitude is the altitude read from an altimeter when the altimeter’s
barometric scale has been set to 29.92 inches of mercury (1013 mb).
ENGINE POWER TERMINOLOGY
BHP Brake Horsepower is the power developed by the engine.
RPM Revolutions Per Minute is engine speed.
Static RPM Static RPM is engine speed attained during a full-throttle engine runup when
the airplane is on the ground and stationary.
AIRPLANE PERFORMANCE AND FLIGHT PLANNING TERMINOLOGY
Demonstrated
Crosswind Velocity
Demonstrated Crosswind Velocity is the velocity of the crosswind
component for which adequate control of the airplane during takeoff and
landing was actually demonstrated during certification tests. The value
shown is not considered to be limiting.
Usable Fuel
Usable Fuel
is the fuel available for flight planning.
Unusable Fuel Unusable Fuel is the quantity of fuel that cannot be safely used in flight.
GPH Gallons Per Hour is the amount of fuel (in gallons) consumed per hour.
NMPG Nautical Miles Per Gallon is the distance (in nautical miles) which can be
expected per gallon of fuel consumed at a specific engine power setting
and/or flight configuration.