'Aircraft Whirling' significantly reduces the number of possible things to both an object that Flies, as well as one that has a Whirling aspect. Whirling itself is an act of spinning, and many would agree - in this particular context - is likely Rotors. While I am unsure of how cheer is used here, pilot also indicates that there is an operator within said vehicle. According to Wikipedia's 'Rotorcraft' page, the only candidate with 10 letters is 'Helicopter'.
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