Sorry! feel really stupid now - here are the clues:
2 down: Hawaiian word for hello and goodbye. A-O--
16 across: Ancient city state on the north African coast. ---T-A-R
19 down: Situation normal, all fouled up, - a slang military acronym. S-A-U
42 across: ---- Faction, another name for the Baader-Meinhoff group. -E-A-M-
43 across: One stroke over par in golf. -O-E-
24 down: first letter of Hebrew alphabet - A-E-H