Make clear list of passengers (8)
I believe the answer is:
manifest
I believe this is a double definition.
'make clear' is the first definition.
(thesaurus)
'list of passengers' is the second definition.
(I've seen this in another clue)
(Other definitions for manifest that I've seen before include "show" , "List of ship's cargo or passengers" , "Obvious to the eye" , "Express" , "Customs document listing contents of ship or plane" .)