It's noisy in this part of the plane (3)
I believe the answer is:
fin
'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" .)