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  2. List of transponder codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Transponder_Codes

    [7] 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.

  3. Instantaneous wave-free ratio - Wikipedia

    en.wikipedia.org/wiki/Instantaneous_wave-free_ratio

    The instantaneous wave-free ratio (iFR, sometimes referred to as the instant wave-free ratio or instant flow reserve) is a diagnostic tool used to assess whether a stenosis is causing a limitation of blood flow in coronary arteries with subsequent ischemia. iFR is performed during cardiac catheterisation (angiography) using invasive coronary pressure wires which are placed in the coronary ...

  4. Aeroflex - Wikipedia

    en.wikipedia.org/wiki/Aeroflex

    In 2002, Aeroflex acquired IFR Systems Inc, a test equipment manufacturer from Wichita, Kansas, originally founded in 1937. [6] In 1998, IFR previously acquired Marconi Instruments, a British test equipment manufacturer. [7] In 2007, Aeroflex was taken private by a group of private equity firms including Veritas Capital, Golden Gate Capital, GS ...

  5. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    ASME Y14.44-2008 [1] and IEEE 315-1975 [2] define how to reference and annotate components of electronic devices. It breaks down a system into units, and then any number of sub-assemblies. The unit is the highest level of demarcation in a system and is always a numeral.

  6. International Financing Review - Wikipedia

    en.wikipedia.org/wiki/International_Financing_Review

    The International Financing Review (IFR [4]), also known as International Financing Review Magazine, [5] is a London-based [6] financial magazine [7] and was established in 1974. [8] It contains stories and data on international investment banking companies and international securities markets. [9] Its ISSN number is ISSN 0953-0223. [10]

  7. Instrument flight rules - Wikipedia

    en.wikipedia.org/wiki/Instrument_flight_rules

    The U.S. Federal Aviation Administration's (FAA) Instrument Flying Handbook defines IFR as: "Rules and regulations established by the FAA to govern flight under conditions in which flight by outside visual reference is not safe. IFR flight depends upon flying by reference to instruments in the flight deck, and navigation is accomplished by ...

  8. Transponder (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Transponder_(aeronautics)

    [6] [7] For flights on instrument flight rules (IFR), the squawk code is typically assigned as part of the departure clearance and stays the same throughout the flight. [6] [7] Flights on visual flight rules (VFR), when in uncontrolled airspace, will "squawk VFR" (1200 in the United States and Canada, 7000 in Europe). Upon contact with an ATC ...

  9. Comparison of download managers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_download...

    This comparison contains download managers, and also file sharing applications that can be used as download managers (using the http, https and ftp-protocol). For pure file sharing applications see the Comparison of file sharing applications .