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  2. Minimum safe altitude warning - Wikipedia

    en.wikipedia.org/wiki/Minimum_Safe_Altitude_Warning

    ICAO Doc 4444 requires that radar systems should provide for the display of safety-related alerts including the presentation of minimum safe altitude warning. [2] The radar equipment predicts an aircraft’s position in 2 minutes based on present path of flight, and the controller issues a safety alert if the projected path encounters terrain or an obstruction.

  3. Advanced Surface Movement Guidance and Control System

    en.wikipedia.org/wiki/Advanced_Surface_Movement...

    ICAO Doc 9830 defines A-SMGCS as follows: Advanced surface movement guidance and control system (A-SMGCS). A system providing routing, guidance and surveillance for the control of aircraft and vehicles in order to maintain the declared surface movement rate under all weather conditions within the aerodrome visibility operational level (AVOL) while maintaining the required level of safety.

  4. Wake turbulence category - Wikipedia

    en.wikipedia.org/wiki/Wake_turbulence_category

    RECAT Phase II was a continuation of the RECAT program that focused on a larger variety of aircraft (123 ICAO type designators that make up more than 99% of US air traffic movements based on 32 US airports), as opposed to the 61 aircraft comprising 85% of operations from 5 US and 3 European airports that were used in RECAT Phase I. [citation ...

  5. Aeronautical Information Publication - Wikipedia

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

    The structure and contents of AIPs are standardized by international agreement through ICAO. AIPs normally have three parts – GEN (general), ENR (en route) and AD (aerodromes). The document contains many charts; most of these are in the AD section where details and charts of all public aerodromes are published.

  6. ACR-PCR method - Wikipedia

    en.wikipedia.org/wiki/ACR-PCR_method

    As opposed to ACR, the ICAO Aerodrome Design Manual does not prescribe a standardized calculation procedure for the PCR; however, ICAO does require an airport authority to use the cumulative damage factor (CDF) concept to determine PCR. [4] The CDF is the amount of structural fatigue life of a pavement that has been used up.

  7. List of transponder codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Transponder_Codes

    ICAO: Non-discrete mode A code reserved use in mode S radar/ADS-B environment where the aircraft identification will be used to correlate the flight plan instead of the mode A code. [1] US: Used exclusively by ADS-B aircraft to inhibit mode 3A transmission. [3] US: Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.

  8. List of aircraft type designators - Wikipedia

    en.wikipedia.org/wiki/List_of_aircraft_type...

    Flag of the ICAO. An aircraft type designator is a two-, three- or four-character alphanumeric code designating every aircraft type (and some sub-types) that may appear in flight planning. These codes are defined by both the International Civil Aviation Organization (ICAO) and the International Air Transport Association (IATA).

  9. Airspace class - Wikipedia

    en.wikipedia.org/wiki/Airspace_class

    Class C airspace is used around airports with a moderate traffic level. Class D is used for smaller airports that have a control tower. The U.S. uses a modified version of the ICAO class C and D airspace, where only radio contact with ATC rather than an ATC clearance is required for VFR operations.