Section 1 – General
ACRONYMS AND TERMINOLOGYACRONYMS AND
TERMINOLOGY
13. ACRONYMS AND TERMINOLOGY
Calibrated Airspeed is the indicated airspeed expressed in knots,
corrected taking into account the errors related to the instrument
itself and its installation.
Indicated Airspeed is the speed shown on the airspeed indicator
and it is expressed in knots.
True Airspeed is the KCAS airspeed corrected taking into ac-
count altitude and temperature.
Design Manoeuvring speed is the speed above the which it is not
allowed to make full or abrupt control movement.
Maximum Flap Extended speed is the highest speed permissible
with flaps extended.
Maximum Landing Gear Operating speed is the maximum speed
allowed to retract or to extend the landing gear.
Maximum Landing Gear Extended speed is the maximum speed
allowed with the landing gear extended.
Minimum control speed: is the minimum speed necessary to en-
sure an efficient aircraft control in case of one engine inopera-
tive.
Maximum Structural Cruising Speed is the speed that should not
be exceeded, except in smooth air and only with caution.
Never Exceed Speed is the speed limit that may not be exceeded
at any time.
Operating Manoeuvring speed is the speed above the which it is
not allowed to make full or abrupt control movement
Stall Speed in landing configuration (flaps and landing gear ex-
tended).
Stall speed in the given flap and landing gear configuration.
Recommended safe simulated OEI speed is the minimum speed
at which simulated OEI training operation should be executed.
Best Angle-of-Climb Speed is the speed which allows best ramp
climb performances.
Best Rate-of-Climb Speed is the speed which allows the best
gain in altitude over a given time.
Rotation speed: is the speed at which the aircraft rotates about
the pitch axis during takeoff
Best Rate-of-Climb speed in case of one engine inoperative.