Regular red revolution in French airport (7)
I believe the answer is:
orderly
'regular' is the definition.
(similar in meaning)
'red revolution in french airport' is the wordplay.
'revolution' indicates an anagram.
'in' indicates putting letters inside.
'french airport' becomes 'orly' (I've seen this before).
'red' is an anagram of 'rde'.
'rde' put within 'orly' is 'ORDERLY'.
(Other definitions for orderly that I've seen before include "Hospital attendant; well behaved" , "Neat, tidy; soldier" , "Methodical, like soldier servant" , "Soldier with special duties - hospital attendant" , "Regular - soldier" .)