C
IRRUS
D
ESIGN
S
ECTION
1: G
ENERAL
SR20
T
HE
A
IRPLANE
P/N 11934-005
1-11
Table 3:
Engine Power Terminology
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 in-flight temperature
indications or from ground meteorological sources. It is
expressed in either °C or °F.
PA
Pressure Altitude is the altitude read from the altimeter
when the altimeter’s barometric adjustment has been
set to 29.92 in.Hg (1013.21 mb) corrected for position
and instrument error. In this Handbook, altimeter
instrument errors are assumed to be zero.
Standard
Temperature
Standard Temperature is the temperature that would be
found at a given pressure altitude in the standard
atmosphere. It is 59 °F (15 °C) at sea level pressure
altitude and decreases approximately 4 °F (2 °C) for
each 1000 feet of altitude increase. See ISA definition.
Engine Power Terminology
Terminology
Definition
HP
Horsepower is the power developed by the engine.
MCP
Maximum Continuous Power is the maximum power
that can be used continuously.
MAP
Manifold Pressure is the pressure measured in the
engine’s induction system expressed as in.Hg.
RPM
Revolutions Per Minute is engine rotational speed.
Static RPM
Static RPM is RPM attained during a full-throttle engine
runup when the airplane is on the ground and
stationary.
Meteorological Terminology (Continued)
Terminology
Definition
Reissue A
