CESSNA SECTION 1
MODEL 208B (867 SHP) GENERAL
GARMIN G1000
U.S.
SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
(Continued)
METEOROLOGICAL TERMINOLOGY
ENGINE POWER TERMINOLOGY
(Continued Next Page)
OAT Outside Air Temperature is the free air static
temperature. It may be expressed in either degrees
Celsius (°C) or degrees Fahrenheit (°F).
ISA International Standard Atmosphere is an atmosphere
in which:
1. The air is a perfect dry gas.
2. The temperature at sea level is 15°C.
3. The pressure at sea level is 29.92 inches of
mercury (in.hg.) (1013.2 mb).
The temperature gradient from sea level to the altitude
at which the temperature is -56.5°C is -1.98°C per 1000
feet.
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).
Beta Mode Beta Mode is the engine operational mode in which
propeller blade pitch is controlled by the power lever.
The beta mode may be used during ground operations
only.
Flameout Flameout is the unintentional loss of combustion
chamber flame during operation.
Flat Rated Flat Rated denotes constant horsepower over a specific
altitude and/or temperature.
Gas
Generator
RPM (N
g
)
Gas Generator RPM indicates the percent of gas
generator RPM based on a figure of 100% being 37,468
RPM.
GCU Generator Control Unit
208BPHCUS-00
1-13
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