>Living in Whitton we get the noise right over our house if they switch to 09 departures.
Indeed. I used to stay at "The Winning Post" which was smack under one of the SID tracks, and reckon that Whitton suffers more than any other area, especially when all the late-evening heavies are launching. At least traffic heading east, north, and west does an early turn to miss Beautiful Downtown Hounslow, if I recall correctly. The early right turn off 09R takes departures right over residential areas in the early (loud and low) stages.
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