These are the most frequently used words in another edition of this book.
air
aircraft
airspeed
allows
altitude
amount
angle
antitorque
approach
area
attack
attitude
autorotation
bank
blade
cause
center
change
climb
collective
conditions
constant
control
cyclic
descent
desired
direction
drag
during
effect
engine
failure
feet
figure
flight
force
forward
fuel
ground
gyroplane
heading
helicopter
high
hover
hovering
however
increase
indicator
instrument
landing
left
level
lift
light
line
low
main
maintain
maneuver
maximum
may
move
movement
must
necessary
normal
occur
operations
pedal
performance
pilot
pitch
point
position
power
pressure
proper
rate
reference
required
result
right
rotor
should
since
speed
surface
system
tail
takeoff
technique
throttle
thrust
time
turn
use
used
vertical
weight
wind