Raytheon Beech Bonanza A36, Pilot'S Operating Handbook And Flight Manual

Page: 25 / 594

1-18 November, 2002
Beech Bonanza A36
Section I
METEOROLOGICAL TERMINOLOGY
Indicated
Pressure
Altitude The number actually read from an altimeter
when the barometric subscale has been
set to 29.92 inches of mercury (1013.2 mil-
libars).
ISA International Standard Atmosphere in
which:
(1) The air is a dry, perfect gas;
(2) The temperature at sea level is 15° Cel-
sius (59° Fahrenheit);
(3) The pressure at sea level is 29.92
inches of mercury (1013.2 millibars);
(4) The temperature gradient from sea
level to the altitude at which the tempera-
ture is -56.5°C (-69.7°F) is -0.00198°C (-
0.003566°F) per foot and zero above that
altitude.
OAT Outside Air Temperature is the free air
static temperature, obtained either from the
temperature indicator (IOAT) adjusted for
compressibility effects, or from ground
meteorological sources.
Pressure
Altitude Altitude measured from standard sea-level
pressure (29.92 in. Hg/1013.2 millibars) by
a pressure (barometric) altimeter. It is the
indicated pressure altitude corrected for
position and instrument error. In this hand-
book, altimeter instrument errors are
assumed to be zero. Position errors may
be obtained from the Altimeter Correction
graphs.