With new noise restrictions coming into effect throughout the 1970s, an aircraft tailored for this role would also have to be very quiet.

He also reversed the rear cylinder head in order to meet emissions and noise restrictions abroad.

Aeroflot was forced to withdraw these aircraft from service due to noise restrictions.

Reagan National Airport also has noise restrictions that are some of the most restrictive in the country.

Due to its distance from the city centre, there are no noise restrictions enforced on the airport.

The city granted permission to use steam under certain speed and noise restrictions on October 9.

"There is no speed limit, no noise restrictions and you have the smell of the sea."

Problems with noise caused noise restrictions to be made.

The 757's quiet operation is also crucial to its success as more airports impose noise restrictions.

This includes radio frequencies, noise restrictions, and flying clubs.