Travelled along runway to charge bomb (6)
I believe the answer is:
taxied
'travelled along runway' is the definition.
(taxi can mean for a plane to drive along a runway)
'charge bomb' is the wordplay.
'charge' becomes 'tax' (tax is a kind of charge).
'bomb' becomes 'ied' (abbreviation for improvised explosive device).
'tax'+'ied'='TAXIED'
'to' acts as a link.
(Other definitions for taxied that I've seen before include "didn't use the bus!" , "Travelled slowly, as an aircraft on a runway" , "Of aircraft, moved slowly on ground" , "Travelled slowly, as a plane on the runway" , "prepared to take off" .)