DA20-C1 Flight Manual
General
Doc # DA202-C1 April 06, 2010 Page 1 - 10
Revision 25
1.11.2. Meteorological Terms
ISA: International Standard Atmosphere at which air is identified as a dry gas. The
temperature at mean sea level is 15° C (59° F), the air pressure at sea level is
1013.25 mbar (29.92 inHg), the temperature gradient up to the altitude at which
the temperature reaches -56.5° C (-67.9° F) is -0.0065° C/m (-0.0036° F/ft) and
0° C/m (0° F/ft) above.
OAT: Outside air temperature.
AGL: Above Ground Level.
Indicated Pressure Altitude:
Altitude reading with altimeter set to 1013.25 mbar (29.92 inHg) air pressure.
Pressure Altitude:
Altitude measured at standard pressure at MSL (1013.25 mbar / 29.92 inHg)
using a barometric altimeter. Pressure altitude is the indicated altitude corrected
for installation and instrument errors. Within this manual the instrument errors
are assumed to be zero.
Aerodrome/Airport Pressure:
Actual atmospheric pressure at the aerodrome/airport altitude.
Wind: The wind speeds used in the diagrams in this manual should be referred to as
headwind or tailwind components of the measured wind.
1.11.3. Powerplant
Take-off Power:
Maximum engine power for take-off.
Maximum Continuous Power:
Maximum permissible continuous engine output power during flight.
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