Piper ARCHER II - Page 27

SECTION i
GENERAL
PIPER AIRCRAFT CORPORATION
PA-28-181, ARCHER I
1.19 SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
The following definitions are of symbols, abbreviations and termi-
nology used throughout the handbook and those which may be of added .
operational significance to the pilot.
(a) General Airspeed Terminology and Symbols
CAS
KCAS
GS
IAS
KIAS
TAS
VA
VFE
REPORT: VB-1120
1-6
Calibrated Airspeed means the indicated
speed of an aircraft, corrected for position
and instrument error. Calibrated airspeed
is equal to true airspeed in standard
atmosphere at sea level.
Calibrated Airspeed expressed in *~Knots.”
Ground Speed is the speed of an airplane
relative to the ground.
Indicated Airspeed is the speed of an air-
craft as shown on the airspeed indicator
when corrected for instrument error. IAS
values published in this handbook assume
zero instrument error.
Indicated Airspeed expressed in “Knots.”
True Airspeed is the airspeed of an airplane
relative to undisturbed air which is the
CAS corrected for altitude, temperature
and compressibility.
Maneuvering Speed is the maximum speed
at which application of full available
aerodynamic control wili not overstress the
airplane.
Maximum Flap Extended Speed is the
highest speed permissible with wing flaps —
in a prescribed extended position.
ISSUED: JULY 2, 1979
REVISED: FEBRUARY 2, 1990