The most common and most likely answer to this crossword clue is the 7 letter word AILERON
I've seen this crossword clue in The Daily Telegraph
A
I
L
E
R
O
N
More clues leading to the result AILERON
- Trouble herons uncovered in flight control
- Trouble with English sailors netting duck's wing part
- Retailer only stocks flight controller
- Trouble rook, one flying round? It’s on the wing
- I learn nothing about flight control
- Prison warden losing head — nothing new in section of wing
- Banking controller one suffering at work
- Engineer near oil in a flap familiar to 18
- Played in a role on the wing
- A new role in flight control
Buddy explains!

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 AILERON mean?
AILERON 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.