service. his position would be to try to recreate the smell and what happened during the time that smell was evoked. he's trying to work that, the fact that he spept three hours to do that, he was confident that it wouldn't reoccur. what he said i wasn't able to re-do it. now the dispatch is the one who makes the decision and says yes we're going to go ahead and fly that flight as opposed to waiting and investigating it further. clearly, this one should have been investigated further before it was allowed to go ahead and fly. >> that's interesting you mentioned it. it's the mechanic and the dispatch. the normal protocol would seem to be that. why would they not say just for the comfort of our passengers we'll swap out a plane. that's what people would feel much more comfortable with knowing that they do. >> again, it's a matter of economics to be honest with you. it comes down to the airline having to make a zig as to whether they fly another aircraft out there, whether they delay the airplane and in this point, they made the wrong