Date: 25 Sep 97 01:39:44 From: "Ken O'Riordan" <email@example.com> Organization: Union Bank of Switzerland
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On a recent visit to the U.S.A I was surprised to notice how smokey the exhaust of jet engines were. Taking the 737 300/400/500 series as an example, I could distinctly see a brown trail coming out of each engine as the aircraft climbed away from the airport. In Europe I don't see this. Can anyone explain the difference? Is it a slightly different fuel mix or atmospherics or just higher use? Regards, Ken.