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  2. Instrument flight rules - Wikipedia

    en.wikipedia.org/wiki/Instrument_flight_rules

    IFR permits an aircraft to operate in instrument meteorological conditions (IMC), which is essentially any weather condition less than VMC but in which aircraft can still operate safely. Use of instrument flight rules is also required when flying in "Class A" airspace regardless of weather conditions.

  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. Instrument rating - Wikipedia

    en.wikipedia.org/wiki/Instrument_rating

    Instrument rating refers to the qualifications that a pilot must have in order to fly under instrument flight rules (IFR). It requires specific training and instruction beyond what is required for a private pilot certificate or commercial pilot certificate, including rules and procedures specific to instrument flying, additional instruction in meteorology, and more intensive training in flight ...

  5. Instrument rating in the United States - Wikipedia

    en.wikipedia.org/wiki/Instrument_Rating_in_the...

    Hold a current FAA Medical Certificate, unless the Practical Examination is administered, in its entirety, in an FAA-certified Level D Flight Training Device. Receive and log ground training from an authorized instructor (i.e. ground school course) or complete a home-study course using an instrument textbook and/or videos.

  6. Instrument meteorological conditions - Wikipedia

    en.wikipedia.org/wiki/Instrument_meteorological...

    A pilot's view of the runway just before landing in thick fog at night. In aviation, instrument meteorological conditions (IMC) are weather conditions that require pilots to fly primarily by reference to flight instruments, and therefore under instrument flight rules (IFR), as opposed to flying by outside visual references under visual flight rules (VFR).

  7. International Financial Reporting Standards - Wikipedia

    en.wikipedia.org/wiki/International_Financial...

    Accrual basis of accounting: An entity shall recognise items as assets, liabilities, equity, income and expenses when they satisfy the definition and recognition criteria for those elements in the Framework of IFRS. [29] Materiality and aggregation: Every material class of similar items has to be presented separately. Items that are of a ...

  8. Standard terminal arrival route - Wikipedia

    en.wikipedia.org/wiki/Standard_terminal_arrival...

    In aviation, a standard terminal arrival route (STAR) is a published flight procedure followed by aircraft on an instrument flight rules (IFR) flight plan just before reaching a destination airport. A STAR is an air traffic control (ATC)-coded IFR arrival route established for application to arriving IFR aircraft destined for certain airports.

  9. Standard instrument departure - Wikipedia

    en.wikipedia.org/wiki/Standard_Instrument_Departure

    Among them, the ANDIK2G Standard Instrument Departure [3] for reaching the ANDIK waypoint northeast of Amsterdam read as follows: [note 1] Lateral route: Track 222° MAG. At 500 ft AMSL turn left (turn MAX 220 KT IAS) to track 093° MAG. At PAM 223 turn left to intercept PAM 207 inbound PAM VOR to intercept PAM 016 to ANDIK (25.2 PAM).