The large model airplane seen hanging when they rescue the actress that is suspended on wires is the studio miniature used for Airport (1970).
At the train fire when Captain Stanley discovers that the rail tanker contains ammonium nitrate he makes a reference to Texas City. The 1947 Texas City disaster was an industrial accident that occurred on April 16, 1947, in the port of Texas City, Texas, United States, located in Galveston Bay. It was the deadliest industrial accident in U.S. history and one of history's largest non-nuclear explosions. Exploding ammonium nitrate was the cause.
Ronny Schell makes another guest appearance. As in the past, the results & dialogue are comical.
At least Thirteenth time Dispatcher is seen & heard. He is seen twice. The first time is possibly stock footage.