sonaca aircraft S201 - Page 18

S201 AFM
1 - GENERAL INFORMATION
1.6 - DEFINITION AND
ABBREVIATIONS
27/06/2019
SONAIR-S2-D-MAN-006
Page : 1-12
Rev. : A
General airspeed terminology and symbols
CAS
Calibrated Airspeed, being the indicated airspeed corrected for
position and instrument error,
IAS
Indicated Airspeed, being the speed shown on the airspeed
indicator.
KCAS
Calibrated Airspeed expressed in knots.
KIAS
Indicated Airspeed expressed in knots.
KTAS
True Airspeed expressed in knots,.
TAS
True Airspeed, being the airspeed relative to undisturbed air, and
which is CAS corrected for altitude and temperature.
V
A
Manoeuvring speed.
V
BG
Best Glide Speed, being the speed (at MTOW) which results in
the greatest gliding distance over the ground.
V
FE
Maximum Flap Extended Speed, being the highest speed
permissible with wing flaps deployed.
V
LOF
Lift-off Speed, being the speed at which the aircraft generally lifts
off from the ground during take-off.
V
NE
Never Exceed Speed, being the speed that may not be exceeded
at any time.
V
NO
Maximum Structural Cruising Speed, being the speed that should
not be exceeded, except in smooth air, and then only with
caution.
V
S
Stall Speed, at maximum weight, engine idling, flaps fully
retracted.
V
SO
Stall Speed in landing configuration (flaps fully extended),
MTOW, engine idling.
V
X
Best Angle of Climb Speed, being the speed (at MTOW, flaps fully
retracted) which results in the greatest altitude gain over a given
horizontal distance (i.e. highest climb angle).
V
Y
Best Rate of Climb Speed, being the speed (at MTOW, flaps fully
retracted) which results in the greatest altitude gain over a given
time period.