Flighty fellow Aaron ought to emulate? (8)

I believe the answer is:

aeronaut

I'm a little stuck... Click here to teach me more about this clue!

'flighty fellow' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for aeronaut that I've seen before include "Pilot - Eton aura (anag)" , "Space pilot" , "Balloonist" , "Early traveller by air" , "Pilot, flier" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.