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No pilot should attempt to fly any of these figures in aircraft not certified for aerobatic flight.
任何飞行员不得在未经认证的飞机上尝试飞这些特技动作。
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All aerobatic figures start and end from horizontal lines in either upright or inverted flight.
所有的特技飞行动作无论是正飞还是倒飞都由水平方向开始和结束。
Out of thousands of flight instructors across the country, only 70 are certified to teach aerobatic flying.
FORBES: Silicon Valley's Aerobatic Executive
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