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  2. ACN-PCN method - Wikipedia

    en.wikipedia.org/wiki/ACN-PCN_method

    In 2013, the ICAO adopted new limits for the tire pressure categories, again based on findings from full-scale pavement tests. [7] [8] Despite these changes, the ACN-PCN method gradually became inconsistent with recent pavement design methods, mostly based on Linear Elastic Analysis (LEA) or Finite Element Method (FEM). The method is also ...

  3. International Civil Aviation Organization - Wikipedia

    en.wikipedia.org/wiki/International_Civil...

    The International Civil Aviation Organization (ICAO / ˌ aɪ ˈ k eɪ oʊ / eye-KAY-oh) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international air transport to ensure safe and orderly growth. [3]

  4. Required navigation performance - Wikipedia

    en.wikipedia.org/wiki/Required_navigation...

    RNP procedures were introduced in the PANS-OPS (ICAO Doc 8168), which became applicable in 1998. These RNP procedures were the predecessor of the current PBN concept, whereby the performance for operation on the route is defined (in lieu of flight elements such as flyover procedures, variability in flight paths, and added airspace buffer), but they resulted in no significant design advantages.

  5. 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.

  6. VHF omnidirectional range - Wikipedia

    en.wikipedia.org/wiki/VHF_omnidirectional_range

    DVOR (Doppler VOR) ground station, collocated with DME. On-board VOR display with CDI MCT DVOR, Manchester Airport, United Kingdom.. Very High Frequency Omnidirectional Range Station (VOR) [1] is a type of short-range VHF radio navigation system for aircraft, enabling aircraft with a VOR receiver to determine the azimuth (also radial), referenced to magnetic north, between the aircraft to/from ...

  7. Wide Area Augmentation System - Wikipedia

    en.wikipedia.org/wiki/Wide_Area_Augmentation_System

    Essentially, WAAS is intended to enable aircraft to rely on GPS for all phases of flight, including approaches with vertical guidance to any airport within its coverage area. It may be further enhanced with the Local Area Augmentation System (LAAS) also known by the preferred ICAO term Ground-Based Augmentation System (GBAS) in critical areas.

  8. International Aeronautical and Maritime Search and Rescue ...

    en.wikipedia.org/wiki/International_Aeronautical...

    In fact, for decades ICAO has observed that "in many areas of the world, the fastest, most effective and practical way to achieve a global SAR service is to develop regional systems" (from its International Aeronautical and Maritime SAR (IAMSAR) manual).

  9. Gatwick Airport - Wikipedia

    en.wikipedia.org/wiki/Gatwick_Airport

    London Gatwick (/ ˈ ɡ æ t w ɪ k /), [3] also known as Gatwick Airport [2] (IATA: LGW, ICAO: EGKK), is the secondary international airport serving London, England.It is located near Crawley, West Sussex, England 29.5 miles (47.5 km) south of Central London.