Meteorological - Beechcraft Musketeer Sport III A23-19 Pilot Operating Handbook

Sectionl
General
BEECHCRAFT Sport III
Musketeer A23-19. 19A
METEOROLOGICAL TERMINOLOGY
ISA International Standard Atmosphere
OAT
lndicated
Pressure
Altitude
Pressure
Altitude
1-14
in which
(1) The air is a dry perfect gas;
(2) The temperatura at sea level is
15° Celsius (59° Fahrenheit);
(3)
The pressure at sea level is
29.92
in Hg . (1 013 .2 millibars);
(4)
The temperatura gradient from sea
level to the altitude at which the
temperatura is -56.5° C (-69 .7 ° F)
is -0.00198° C (-0.003566° F)
per foot and zero above that
altitude.
Outside Air Temperatura is the free air
static temperatura, obtained either
from inflight temperatura 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 . (1 013.2 millibars).
Altitude measured from standard
sea-level pressure
(29 .92
in . Hg) by
a pressure or barometric altimeter.
lt 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 .
October 1979