Moving surface on wing causes panic (4)
I believe the answer is:
flap
I believe this is a double definition.
'moving surface on wing' is the first definition.
(I've seen this before)
'panic' is the second definition.
(getting in a flap is panicking)
'causes' is the link.
(Other definitions for flap that I've seen before include "Tab - tizzy - move wings" , "Excitement" , "Moving surface on wing" , "Flutter" , "Panic; fold" .)