A group of executives, loaded (6)
I believe the answer is:
aboard
'loaded' is the definition.
(aboard can mean loaded onto a vehicle)
'a group of executives' is the wordplay.
'group of executives' becomes 'board' (as in a board of directors).
'a'+'board'='ABOARD'
(Other definitions for aboard that I've seen before include "on a liner, say" , "Alongside" , "at sea, say?" , "on boat, perhaps" , "On (eg, a ship)" .)