Hear simple story swapped on an aircraft (9)
I believe the answer is:
tailplane
'an aircraft' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'hear simple story swapped' is the wordplay.
'hear' shows a homophone (sound like).
'simple' becomes 'plain' ('plain' can be a synonym of 'simple').
'story' becomes 'tail' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'swapped' says to put letters next to each other.
'plain' is a homophone of 'plane'.
'plane' put after 'tail' is 'TAILPLANE'.
'on' acts as a link.
Can you help me to learn more?
(Another definition for tailplane that I've seen is " part of aircraft".)