Helicopter part taken from Cairo to Riyadh (5)
I believe the answer is:
rotor
'helicopter part' is the definition.
(I know that rotor is part of chopper)
'from cairo to riyadh' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ROTOR' is hidden within 'cairo to riyadh'.
'taken' is the link.
(Other definitions for rotor that I've seen before include "Helicopter propeller" , "Revolving dynamic part" , "Revolving bar" , "US state South of L. Erie" , "Reversible piece of moving machinery?" .)