Airplanes noise common sense?

Why can't simple measures like they're implementing in Paris help with noise:

• Increase the altitude by 300 m and come down quicker: this would reduce the noise by 50% within 10-25 km!
• Tax aircraft movements between 1800 and 2200 (there's a strict curfew for Paris airport) between 2200 and 0600) and allocate this tax income to neighbouring residents for sound-proofing their homes.

Answer? Because the Department of Transport has aligned itsefl very closely with BAA and BA and has absolutely no interest for local residents' welfare.

Tags: HeathrowExpansion, heathrow, pollution, airlines, transportation, UK, environment, richmondtransits.blog