>> The noise restrictions at Heathrow are designed to prevent antique and exceptionally noisy aircraft like
>> a 707 or similar flying in or out - anything else, up to and including
>> a 747/A380 is fine.
>>
The noise issue years ago was largely about take offs. The roar/crackle of a turbojet or low bypass fan engine passing overhead was deafening to point of causing pain. The early 'Classic' 747 had a noise like a buzz saw as it came towards you, whether with P&W or Rolls engines, but then faded to a whooshing sound as it crossed overhead.
Today's machines are near silent by time they cross the aerodrome boundary, though the buzz is still occasionally present.
Landing on the other hand still makes a racket once the gear and flaps are in play. Not just the engines but airframe noise too.
Low drag approaches have moved the noise westward from Central London (cp the seventies) but the western 'burbs still cop it big time.
Last edited by: Bromptonaut on Thu 18 Jul 13 at 13:27
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