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  2. Supplemental access control - Wikipedia

    en.wikipedia.org/wiki/Supplemental_access_control

    Prior to reading the chip, the inspection system needs to know some data that is printed on the document (e.g. the MRZ) or a key that is known only to the holder (personal identification number (PIN)), which means he has willingly handed the document for inspection. While BAC works only with the MRZ, PACE allows using card access numbers (short ...

  3. Aeronautical operational control - Wikipedia

    en.wikipedia.org/wiki/Aeronautical_Operational...

    Aeronautical operational control (AOC) is a group or the entirety of applications used for communication of an aircraft with its airline or service partners on the ground.

  4. International Civil Aviation Organization Public Key Directory

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

    The International Civil Aviation Organization Public Key Directory (ICAO PKD) is a database maintained by the International Civil Aviation Organization holding national cryptographic keys related to the authentication of e-passport information. The ICAO PKD content is open to the public, and can be downloaded for free at https://download.pkd ...

  5. 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.

  6. Aviation transponder interrogation modes - Wikipedia

    en.wikipedia.org/wiki/Aviation_transponder...

    [5] [6] The ICAO 24-bit address can be represented in three digital formats: hexadecimal, octal, and binary. These addresses are used to provide a unique identity normally allocated to an individual aircraft or registration. As an example, following is the ICAO 24-bit address assigned to the Shuttle Carrier Aircraft with the registration N905NA ...

  7. ICAO code - Wikipedia

    en.wikipedia.org/wiki/ICAO_code

    ICAO code may refer to: . ICAO airport code, a four-letter code designating each airport; ICAO airline designator, a three-letter code designating each airline; ICAO aircraft type designator, a three- or four-character alphanumeric code designating every aircraft type (and some sub-types) that may appear in flight planning

  8. VHF Data Link - Wikipedia

    en.wikipedia.org/wiki/VHF_Data_Link

    The ICAO standard for the VDL Mode 2 specifies three layers: the Subnetwork, Link, and Physical Layer. The Subnetwork Layer complies with the requirements of the ICAO Aeronautical Telecommunication Network (ATN) standard which specifies an end-to-end data protocol to be used over multiple air-ground and ground subnetworks including VDL.

  9. Aeronautical Message Handling System - Wikipedia

    en.wikipedia.org/wiki/Aeronautical_Message...

    In order to ensure unobstructed communication between the ANSPs, the European Air Navigation Planning Group (EANPG) of ICAO has defined 59 test cases in its EUR AMHS Manual (V5.0), 17/06/2010 (Appendix D, AMHS Conformance Tests), ASIA/PAC AMHS Manual (Annex B, AMHS Conformance and Compatibility Test, V2.0, 22/09/08) which have to be performed prior to establishment of bilateral links between ...