A Muslim only airline would lead to all sorts of arguments and fighting at the check-in as passengers and staff debated about who in fact was a "real" or "good" Muslim, just like QL. The airline would never see a single plane take off and would go bankrupt in a week.

How about a secular airline that lets all passengers on and only removes any persons acting suspiciously according to the professional eyes of the staff? Once cleared, the formerly-suspicious person would be placed on the next available flight at the expense of the airline with its apologies for the inconvenience. The formerly-suspicious person would take it all in his stride, realizing that further investigation is not the same as accusation and understanding that such measures are in place to protect him and his fellow passengers and believing in the maxim 'better safe than sorry.' No need to make a media frenzy issue of it, he would say to himself, because after all far worse would be the case when a pilot is afraid to remove a suspicious passenger for fear of bad publicity and that passenger to turn out to be a terrorist.