Beech Beechcraft Bonanza V35 - Meteorological Terminology

BEECHCRAFT Bonanza Section I
General
V35. V35A & V35B thru D-994 7
METEOROLOGICAL TERMINOLOGY
ISA
OAT
Indicated
Pressure
Altitude
Pressure
Altitude
January 1982
International Standard Atmosphere
in which
(1) The air is a dry perfect gas;
(2) The temperature at sea level is
15° Celsius (59° Fahrenheit);
(3) The pressure at sea level is 29.92
in Hg. (1013.2 millibars);
(4) The temperature gradient from sea
level to the altitude at which the
temperature is -56.5° C (-69.7° F)
is -0.00198° C (-0.003566° F)
per foot and zero above that
altitude.
Outside Air Temperature is the free air
static temperature, obtained either
from inflight temperature indica-
tions adjusted for instrument
error and compressibility effects,
or ground meteorological
sources.
The number actually read from an
altimeter when the barometric sub-
scale has been set to 29.92 in
Hg. (1013.2 millibars).
Altitude measured from standard
sea-level pressure (29.92 in. Hg) by
a pressure or barometric altimeter.
It is the indicated pressure altitude
corrected for position and instrument
error. In this Handbook, altimeter
instrument errors are assumed to be
zero. Position errors may be
obtained from the Altimeter
Correction Graph.
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