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Let's discuss another fear. Fear of something going wrong with an airplane. Well, things DO go wrong with airplanes. Nobody has ever invented a machine that is totally foolproof. But go back to the analogy of your automobile versus an airliner. I'll venture to say that of the drivers in this audience, there is not a single person who has not at some time stepped into a car that had a major mechanical fault involving potential danger. Worn tires, because the family budget may have been a bit strained. Brakes that need relining, because you just hadn't gotten around to taking the car to the garage. Windshield wipers that needed replacing. A burned out headlight. Tired shock absorbers. Do you think that any airline would allow one of its planes to take off with corresponding mechanical faults? The airlines have what they call "no go" items -- and these simply are maintenance items directly affecting safety. If there is the slightest suspicion that any one of these components should be listed as "no go" that aircraft will not move one inch until it is fixed. We might term this precautionary. An airline creed of equal importance is prevention -- to catch mechanical troubles before they become troubles. I'm sure those of you who have flown have become annoyed at a delay caused by mechanical malfunctions. I'm also sure that you never stopped to realize that the reason our airlines operate on schedule at least 80 per cent of the time is due to preventive maintenance. And I'm sure also that if you were privileged -- and I use that word deliberately -- if you were privileged to visit the maintenance base of any scheduled airline in the United States, you would be flabbergasted at the extent of this prevention.