Corrected entry: When the L-1011 lands at the small airport, the hijackers demand fuel. The small town sheriff agrees to the demand. A small tanker shows up which would be able to hold roughly 3000-4000 gallons. That amount of fuel wouldn't even fill up one wing.
Corrected entry: At the beginning of the film. Charles Rayne asks the surgeon what time it is. He replies "It's 12 o' Clock" Rayne then jumps up and grabs the scalpel and proceeds to slit his throat. Run it in slow motion and you will see the fake blood on the surgeon's throat before it is supposedly cut.
Corrected entry: The hijacked L-1011 Tristar lands at a small airport, which in theory it could probably do, but it would never be able to take off from there. Planes typically require at least double the runway to take off as they do to land (except on aircraft carriers). The airport it "landed" at has two runways, the longest being 6500 feet. The early L-1011's need at least 7500 feet to take off, and that isn't with full fuel and bags, as would be the case with this aircraft.