DV 20 E AFM General
Doc. No. 4.01.25-E Rev. 2 22-Mar-2022 Page 1 - 7
1.6 DEFINITIONS AND ABBREVIATIONS
(a) Airspeeds
CAS: Calibrated Airspeed. Indicated airspeed, corrected for installation and instrument
errors. CAS equals TAS at standard atmospheric conditions (ISA) at MSL.
IAS: Indicated Airspeed as shown on an airspeed indicator.
KCAS: CAS in knots.
KIAS: IAS in knots.
TAS: True Airspeed. The speed of the airplane relative to the air. TAS is CAS
corrected for errors due to altitude and temperature.
v
A
: Maneuvering Speed. Full or abrupt control surface movement is not permissible
above this speed.
v
FE
: Maximum Flaps Extended Speed. This speed must not be exceeded with the
given flap setting.
v
NE
: Never Exceed Speed in smooth air. This speed must not be exceeded in any
operation.
v
C
: Maximum Cruising Speed. This speed may be exceeded only in smooth air,
and then only with caution.
v
R
: Rotation Speed.
v
S
: Stalling Speed, or the minimum continuous speed at which the airplane is still
controllable in the given configuration.
v
S0
: Stalling Speed, or the minimum continuous speed at which the airplane is still
controllable in the landing configuration.