So, how exactly do the terrorists smuggle aboard some of the larger weapons that they're carrying? The Glock and the Skorpion that the Big Bad carries are almost credible (with plenty of suspension of disbelief) but The Guards Must Be Crazy if, according to the imfdb, they can get AKs and FALs aboard a plane, even before The War on Terror.
Considering that the rifles were buried deep inside the food carts, odds are they had an inside man working at the airport.
Greece at the time had a reputation of being rather lax in security and in airport security in particular.
Did Hassan plan to escape from the airplane before it would have crashed on Washington and thus triggered the bomb or was it a suicide attack ?
Considering that he is fanatical enough to cut off the guy they were supposedly trying to free, and then shoot his own men, yes!