From: email@example.com (Jim Haynes) Organization: University of California; Santa Cruz Date: 12 Feb 93 11:12:09 PST
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I got to wondering how long an airliner lasts and why. Since the beginning of the jet era all the airliners go about the same speed. I guess some planes have been retired from service because of fuel economy or noise. Is fuel economy just a matter of engine development, or have there been improvements in airplane design that result in greater fuel economy? (i.e. why don't they just put newer/quieter engines in old airplanes?) I've read of concerns about the number of takeoffs and landings, hence the number of pressurization/depressurization cycles; do airliners really "wear out" in this respect. What other factors cause an airliner to wear out, or to be retired from first-line service before it is worn out? -- firstname.lastname@example.org email@example.com "Ya can talk all ya wanna, but it's dif'rent than it was!" "No it aint! But ya gotta know the territory!" Meredith Willson: "The Music Man"