This might sound a little stupid but what is the story behind the Gimli Glider (AC 767) I heard parts of it but how do you run out of fuel in mid-air? Was it a mis-calculation of how much? And at 40,000ft. I thought that the service sealing is something like 36,000-38,000ft? How many 767's does AC own a operate. And I was planning on flying SFO-YYZ on AC, is that a A319, A320, or A321? As I remember their seats sucked, I saw a pic of a A321 and the seats looked better and the headrests were way more improved. Just wondering b/c I haven't heard of such a thing.