Re: Engine noise

Date:         05 Jan 97 03:22:35 
From:         "Dave & RuthAnne Clickner" <>
Organization: Netcom
References:   1
Followups:    1
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Robert M. Sherry <> wrote in article

> While waiting for a pre-dawn flight last week, I noticed that
> both Stage 2 and 3 jets appear (to me, at least) to produce
> almost equal amounts of low-frequency noise...

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.