Proofing

Proofing: The treatment of fabric to render it gas-tight or water-resisting.
Proof Stress: The load for a given cross sectional area under which a material must not stretch permanently beyond a specified percentage of its length.

For example, the FAA with airline support, provides grants to airports for soundproofing homes, schools, churches and other structures near airports.

The new 206H was introduced with a full King/Honeywell IFR panel, corrosion-proofing, optional float-fittings and a 300 hp Lycoming IO-540 engine. The airplane remained virtually unchanged from 1999 to 2003.

the much criticised stall characteristics, while a number of other problems, including the poor quality control, were addressed in the improved Tomahawk II, which was introduced for the 1981 model year. Enhancements included improved sound proofing, ...

Actually, that's just another way of saying the longer we do things, the easier it becomes to find the stuff we need to do those things. Whether it is building airplanes or waterproofing the basement, ...

the existing condition and for 5 years in the future; (2) workable on airport noise abatement measures (preferential runway use programs, new or preferential flight tracks), (3) off airport noise mitigation measures (land acquisition, soundproofing, ...

on-airport noise abatement measures, such as preferential runway use programs, new or preferential flight tracks, curfews; (3) off-airport noise mitigation measures (land use control programs and regulations), such as land acquisition, soundproofing, ...

See also: Aircraft, Weight, Aviation, Pilot, Flight