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  2. Ancillary Terrestrial Component - Wikipedia

    en.wikipedia.org/wiki/Ancillary_Terrestrial...

    Ancillary Terrestrial Component (ATC) is a U.S. Federal Communications Commission-approved [1] technique for using a "terrestrial" network of cell-phone towers to supplement a Mobile Satellite Service (MSS) provided by orbiting communications satellites. Satellite communications can be degraded by various factors, including attenuation in urban ...

  3. Aeronautical Information Manual - Wikipedia

    en.wikipedia.org/wiki/Aeronautical_Information...

    In United States and Canadian aviation, the Aeronautical Information Manual (AIM) [1] (formerly the Airman's Information Manual) is the respective nation's official guide to basic flight information and air traffic control procedures. These manuals contains the fundamentals required in order to fly legally in the country of origin.

  4. Air traffic control radar beacon system - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_control_radar...

    An ATC ground station consists of two radar systems and their associated support components. The most prominent component is the PSR. It is also referred to as skin paint radar because it shows not synthetic or alpha-numeric target symbols, but bright (or colored) blips or areas on the radar screen produced by the RF energy reflections from the target's "skin."

  5. National Air Traffic Controllers Association - Wikipedia

    en.wikipedia.org/wiki/National_Air_Traffic...

    The union hopes that these negotiations will help alleviate the staffing insufficiencies, the increasing amount of delays, and help modernize the air traffic control technology. [7] By the time Reauthorization passed, after 23 short-term extensions, the Parties were already two years into a new three-year contract negotiated in 2009.

  6. Air traffic management - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_management

    air traffic services (ATS) including air traffic control (ATC), air traffic advisory services, flight information services and alerting services, airspace management (ASM), the purpose of which is to allocate air routes, zones, flight levels to different airspace users and the airspace structure, and

  7. Boston Air Route Traffic Control Center - Wikipedia

    en.wikipedia.org/wiki/Boston_Air_Route_Traffic...

    Boston Center is the 18th busiest air traffic control center in the United States. In 2024, Boston Center was responsible for handling 1,502,689 flights. [ 1 ] The Boston ARTCC currently covers 165,000 square miles (430,000 km 2 ) of airspace that includes airports in Connecticut , Vermont , Massachusetts , Rhode Island , Maine , New Hampshire ...

  8. Traffic collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Traffic_collision...

    A traffic alert and collision avoidance system (TCAS), pronounced / ˈ t iː k æ s / TEE-kas), also known as an Airborne Collision Avoidance System (ACAS), [1] is an aircraft collision avoidance system designed to reduce the incidence of mid-air collision (MAC) between aircraft.

  9. Seismic analysis - Wikipedia

    en.wikipedia.org/wiki/Seismic_analysis

    Students included Ed Wilson, who went on to write the program SAP in 1970, an early "finite element analysis" program. [ 3 ] Earthquake engineering has developed a lot since the early days, and some of the more complex designs now use special earthquake protective elements either just in the foundation ( base isolation ) or distributed ...