- Arrivals or departures of an aircraft in accordance with an IFR (instrument flight rules) flight plan or special VFR (visual flight rules) procedures, or an operation where IFR separation between aircraft is provided by a terminal control facility. There are three kinds of instrument operations:i. Primary instrument operations. Arrivals and departures at the primary airport, which is normally the airport at which the approach control facility is located.ii. Secondary instrument operations. Arrivals and departures at airports other than the primary airport.iii. Overflights. Operations in which an aircraft transits the area without an intent to land.
Aviation dictionary. 2014.
Look at other dictionaries:
Instrument flight rules — (IFR) are a set of regulations and procedures for flying aircraft whereby navigation and obstacle clearance is maintained with reference to aircraft instruments only , while separation from other aircraft is provided by Air Traffic Control. In… … Wikipedia
Instrument De Calcul — Au sens le plus large du terme, un instrument de calcul est un objet qui aide l opérateur dans ses calculs. Les historien de la technique du calcul font la distinction entre instrument et machine. Ils parlent d instrument quand l opérateur doit… … Wikipédia en Français
Operations readiness and assurance — is used primarily in the Oil Gas exploration and development business, but it is also used extensively by the U.S. military, NASA and the global finance sector, to name but a few. Simply put, it can be used anywhere where a requirement for a… … Wikipedia
instrument — [in′strə mənt] n. [OFr < L instrumentum, a tool or tools, stock, furniture, dress < instruere: see INSTRUCT] 1. a) a thing by means of which something is done; means b) a person used by another to bring something about 2. a tool or… … English World dictionary
Instrument approach — Terminal procedures for an ILS approach in the United States. (The disclaimers shown in red in the illustration do not appear on the original approach plate.) For aircraft operating under instrument flight rules (IFR), an instrument approach or… … Wikipedia
instrument runway/instrument approach runway — A runway equipped with visual and electronic navigational aids for which a precision or a nonprecision approach with straight in landing minimums has been approved. There may be more than one instrument runway on an airfield. The various types of … Aviation dictionary
Instrument Rating in the United States — An Instrument Rating is required for a pilot to fly under instrument flight rules (IFR).In the U.S., the rating is issued by the FAA.Instrument rating standardsTo be eligible to pursue an Instrument Rating, the applicant must: *Hold at least a… … Wikipedia
Instrument for Stability — The Instrument for Stability (IfS, more commonly referred to as the Stability Instrument) is a financial instrument at the disposal of the European Commission (through the Directorate General for External Relations) to respond urgently to the… … Wikipedia
Instrument landing system — The Instrument Landing System (ILS) is a ground based instrument approach system that provides precision guidance to an aircraft approaching a runway, using a combination of radio signals and, in many cases, high intensity lighting arrays to… … Wikipedia
Instrument — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Instrument », sur le Wiktionnaire (dictionnaire universel) Un instrument est un objet fabriqué en vue… … Wikipédia en Français