Crossword Genius

It's noisy in this part of the plane (3)

Ross

I believe the answer is:

fin

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

'this part of the plane' is the definition.
'fin' can be an answer for 'part' (fin is a kind of part). I am unsure of the remainder of the definition.

'it's noisy in' is the wordplay.
'it's noisy' becomes 'f'.
'f'+'in'='FIN'

Can you help me to learn more?

(Other definitions for fin that I've seen before include "Swimmer" , "Part of an aircraft's tail" , "Fish propeller; end (Fr.)" , "Piscine appendage" , "A fish uses it to steer itself" .)

I've seen this clue in the Evening Standard.
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