The most common and most likely answer to this crossword clue is the 8 letter word AILERONS
A
I
L
E
R
O
N
S
Buddy explains!
The straight part
We know that "parts of an aircraft" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case parts of an aircraft = ailerons.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does AILERONS mean?
AILERONS noun- The hinged part on the trailing edge of an airplane wing, used to control longitudinal turns.
- A half gable, as at the end of a penthouse or of the aisle of a church.