Symbols, Ab B Reviations A N D Terminology; General Ai R Speed Terminol O Gy And Symbol S - Cessna 172SPHUSR05 Pilot Operating Handbook

SECTION 1
GENERAL

SYMBOLS, AB B REVIATIONS A N D TERMINOLOGY

GENERAL AIRSPEED TERMINOLOGY AND SYMBOLS
KCAS
Knots Calibrated Airspeed
corrected for posi t i o n and instrument error and
expressed i n knots. Knots calibrated airspeed i s equal
to KT AS in standard atmosphere at sea level.
KI A S
Knots Indicated Airspeed airspeed indicator and expressed in knots.
KTAS
Knots True Airspeed
knots relati v e to undisturbed air which i s KCAS
corrected for al t i t ude and temperature.
whi c h full or abrupt control movements may be used Maneuvering Speed
wi t hout overstressing the ai r frame.
speed permissi b l e wi t h wi n g flaps i n a prescribed Maximum Flap Extended Speed
extended posi t i o n.
that shoul d not be exceeded except i n smooth ai r , Maximum Structural Cruising Speed
then only wi t h caution.
Never Exceed Speed
be exceeded at any time.
Stalling Speed o r the minimum
Vs
speed
controllable.
Stalling Speed o r the minimum
Vso
speed
controllabl e in the landing configuration at the most
forward center of gravi t y.
resul t s in the greatest gai n of al t i t ude in a gi v en
Best Angle-of-Climb Speed
Vx
hori z ontal di s tance.
V y
Best Rate-of-Climb
resul t s i n the greatest gai n in al t i t ude in a gi v en time.
i s the speed limi t that may not
i s the minimum speed at whi c h the airpl a ne i s
i s the minimum speed at whi c h the airpl a ne i s
Speed
MODEL 1 72S
i s indicated airspeed
is the speed shown on the
i s the airspeed expressed in
i s the maximum speed at
i s the hi g hest
steady
steady
i s the speed which
i s the speed which
CESSNA
is the speed
flight
flight
Revision 4