I remember dropping my girlfriend off at LAX in the winter of 1970. She was flying a 747 Swiss Air back to her home in Zurich. I was sad driving back to Orange County, but could see the big 747 our of my car window for 20 minutes as it left LAX and climbed out over Pomona and Mt. Baldy on a crystal clear day. (I still have this memory and the girlfriend - now wife!)
Crystal clear days were not very common back then