1-10 P/N 13772-002
Section 1 Cirrus Design
General SR22
Meteorological Terminology
V
SO
Stalling Speed is the minimum steady flight speed at
which the aircraft is controllable in the landing
configuration (100% flaps) at the most unfavorable weight
and balance.
V
X
Best Angle of Climb Speed is the speed at which the
airplane will obtain the highest altitude in a given
horizontal distance. The best angle-of-climb speed
normally increases slightly with altitude.
V
Y
Best Rate of Climb Speed is the speed at which the
airplane will obtain the maximum increase in altitude per
unit of time. The best rate-of-climb speed decreases
slightly with altitude.
IMC Instrument Meteorological Conditions are meteorological
conditions expressed in terms of visibility, distance from
cloud, and ceiling less than the minima for visual flight
defined in FAR 91.155.
ISA International Standard Atmosphere (standard day) is an
atmosphere where (1) the air is a dry perfect gas, (2) the
temperature at sea level is 15°C, (3) the pressure at sea
level is 29.92 in.Hg (1013.2 millibars), and (4) the
temperature gradient from sea level to the altitude at
which the temperature is -56.5°C is -0.00198°C per foot
and zero above that altitude.
MSL Mean Sea Level is the average height of the surface of the
sea for all stages of tide. In this Handbook, altitude given
as MSL is the altitude above the mean sea level. It is the
altitude read from the altimeter when the altimeter’s
barometric adjustment has been set to the altimeter
setting obtained from ground meteorological sources.
OAT Outside Air Temperature is the free air static temperature
obtained from inflight temperature indications or from
ground meteorological sources. It is expressed in either
degrees Celsius or degrees Fahrenheit.
Reissue A
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