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  2. Environmental impact of aviation - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    Contrail radiative forcing could be minimized by schedules: night flights cause 60–80% of the forcing for only 25% of the air traffic, while winter flights contribute half of the forcing for only 22% of the air traffic. [154] As 2% of flights are responsible for 80% of contrail radiative forcing, changing a flight altitude by 2,000 ft (610 m ...

  3. Clean Air Act (United States) - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Act_(United_States)

    The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most influential modern environmental laws .

  4. List of Air Canada destinations - Wikipedia

    en.wikipedia.org/wiki/List_of_Air_Canada...

    Air Canada is the world's 10th largest passenger airline by fleet size, and the airline is a founding member of Star Alliance. In 2014, Air Canada together with its Air Canada Express regional partners carried over 38 million passengers. Between them, they operate on average more than 1,500 scheduled flights daily. [2] [1]

  5. TWA Flight 841 (1979) - Wikipedia

    en.wikipedia.org/wiki/TWA_Flight_841_(1979)

    [1]: 4 The flight crew would be questioned on three occasions during the course of the entire investigation: hours after landing in Detroit, on April 12, 1979, and on January 29, 1980. [ 1 ] : 37 The investigators of the National Transportation Safety Board (NTSB) located the No. 7 slat missing from the leading edge of the right wing amongst ...

  6. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    US counties that are designated "nonattainment" for the Clean Air Act's NAAQS, as of September 30, 2017. The U.S. National Ambient Air Quality Standards (NAAQS, pronounced / ˈ n æ k s / naks) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. [1]

  7. Alpena County Regional Airport - Wikipedia

    en.wikipedia.org/wiki/Alpena_County_Regional_Airport

    The airport has been assigned to the Air National Guard since 1952 and is used for training. The airport started updates to its passenger terminal in the 1990s. Great Lakes Airlines provided service to Chicago until 1997, when Northwest Airlines began flights to Detroit with regional partner Mesaba Airlines. In 1999, the airport became eligible ...

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