英文關鍵字
adrenaline
adventure
air
aircraft
angle
anti
attack
bar
blades
chopper
collective
cyclic
engine
flying
helicopter
hover
instructor
lycoming
maneuver
mi8
mountains
off
pilot
piloting
pitch
place
practice
rotate
rotor
rotorcraft
russian
siberia
side
sideslip
snow
spinning
spruce
swashplate
tail
take
takeoff
teetering
torque
trainer
training
tree
twoseat
whirling
whirlybird