im guessing its BFS (Belfast International?)... more than likely a temporary contract as Servisair at Belfast has had a series of redundancies in the last 6-8 months
basically its nothing too difficult... as long as he seems keen, and shows he isnt afraid of heavy and constant work... Servisair deal with some of the heaviest charters during the summer..
1 word of advice is, if he is successful make sure he has references (must be quite detailed to prove he is who he is...) for the last 5 years ready (former employment, education etc...) as for him to get security clearance will take atleast 3 weeks from the date the forms are filled in... any delays in not having references can affect his job as he needs to be shadowed airside and escorted through checkpoints/doors
good luck to him