Useful english dictionary. 2012.
Navigational instrument — Navigational instruments refers to the instruments used by nautical navigators and pilots as tools of their trade. The purpose of navigation is to ascertain the present position and to determine the speed, direction etc. to arrive at the port or… … Wikipedia
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 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 — noun 1 tool for a particular task ADJECTIVE ▪ precision, sensitive ▪ sophisticated ▪ reliable ▪ crude ▪ blunt … Collocations dictionary
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
Navigational aid — A lighthouse is an easily recognized aid to navigation. A navigational aid (also known as aid to navigation, ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to nautical or… … Wikipedia
instrument approach chart — An aeronautical chart that depicts the aeronautical data required to execute an instrument approach procedure to an airport. These charts depict the procedures, including all related data, and the airport diagram. Each procedure is designated for … Aviation dictionary
navigational — adj. Navigational is used with these nouns: ↑aid, ↑instrument … Collocations dictionary
Nocturnal (instrument) — A nocturnal as costume jewellery. This is a functioning nocturnal, though only about 5 cm tall. It shows the month ring on the outside in brass. The silver coloured inner disk shows the time and has an indicator on one edge. By setting the… … Wikipedia
Electronic Flight Instrument System — An electronic flight instrument system, or EFIS, is a flight deck instrument display system in which the display technology used is electronic rather than electromechanical. EFIS normally consist of a primary flight display (PFD), multi function… … Wikipedia
