Pilot’s Operating Handbook
1-9
DO NOT USE FOR FLIGHT OPERATIONS
Section 1
GENERAL
100 SERIES
General
1-5 SYMBOLS, ABBREVIATIONS, AND TERMINOLOGY
GENERAL AIRSPEED TERMINOLOGY AND ABBREVIATIONS
KCAS - Knots Calibrated Airspeed – The indicated airspeed of an airplane
expressed in knots, corrected for position and instrument error. Calibrated
airspeed is equal to true airspeed in a standard atmosphere at sea level.
GS - Ground Speed – The speed of an airplane relative to the ground.
KIAS - Knots Indicated Airspeed – The speed of an airplane as shown on
the airspeed indicator.
KTAS - Knots True Airspeed – The airspeed, expressed in knots, relative to
undisturbed air which is KCAS corrected for non-standard temperature and
altitude.
V
- Enroute Climb Speed – The regulatory climb speed at which the
performance data in “Section 5” of this handbook is based upon.
V
- Maximum Flap Extended Speed – The highest speed permissible with
the wing aps placed in a prescribed extended position.
V
- Maximum Operating Airspeed – The speed that may not be
deliberately exceeded in normal ight operations.
V
- Never Exceed Speed – The airspeed which should never be exceeded
during ight operations.
V
- Maximum Operating Maneuvering Speed – The maximum speed at
which application of full or abrupt control movements may be used without
overstressing the aircraft. At speeds less than or equal to maneuvering
speed, the aircraft will stall before the maximum load limits are reached.
V
- Landing Reference Speed or the threshold crossing speed – The
base speed used for reference and calculations.
V
- Stalling Speed or the minimum steady ight speed at which the
airplane is controllable in the clean conguration.
V
- Stalling Speed or the minimum steady ight speed at which the
airplane is controllable in the landing conguration at max weight and
forward C.G.
V
- Best Angle-of-Climb Speed – The speed which results in the greatest
gain of altitude in a given horizontal distance.
V
- Best Rate-of-Climb Speed – The speed which results in the greatest
gain of altitude in a given time and changes with altitude.