22d one May get into a stew having look into old will (7) s?a?l?t 41d two sorts of men swallow iron in the form of protein (9) r?p?e???r 29d kill to get on flight on the contrary (4,3) s?m?/???
22d Shallot - 'lo(ok)' (in) 'shalt' (old "will")
41d Repressor (protein) - 'press' (iron, in) 'R(oyal) E(ngineers) + 'o(ther) r(anks)'
29d Bump off (kill) - an airline might bump you off the flight if they've sold too many seats