Date: 06 Jan 97 01:41:44 From: email@example.com (Larry Stone) Organization: InterServe Communications, Inc. References: 1 2 Followups: 1
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In article <airliners.1997.110@ohare.Chicago.COM>, "Dave & RuthAnne Clickner" <firstname.lastname@example.org> wrote: >Stage 2 or 3 is based on the weight of the aircraft and the noise level. A >767 can make a lot of noise and be stage 3 while a 727 can make less and be >stage 2. And yes there is a very large difference in the noise levels of >stage 2 and stage 3 for a single aircraft type. I was quite surprised recently to discover that our (United's) older 747-100's and 200's, which are Stage 2, get classified Stage 3 when flying red-eye from HNL to SFO, apparently due to a pre-dawn noise requirement at SFO. I've been unable to determine if the "modification" is anything more than placing a placard in the flight deck that in essence says "this is a Stage 3 airplane". Perhaps there's also a largely irrelevant maximum take-off weight reduction - irrelevant due to the relatively short flight and resulting fuel on board as I've never been aware of a 747 off HNL to the West Coast being wwight restricted (unlike the DC-10-10's). -- -- Larry Stone --- email@example.com http://www.interserve.com/~lstone/ Belmont, CA, USA My opinions, not United's.