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Terms for subject Aviation (1801 entries)

IFR control service	A service provided by ATC units including: (a) area control service; and (b) terminal control service
IFR flight	A flight conducted in accordance with instrument flight rules (IFR) FrvollFR
IFR landing minimums	The minimums prescribed for landing a civil aircraft while using an instrument approach procedure
IFR military training route	A route used by the U.S. Department of Defense and Canadian DND units for the purpose of conducting low-altitude navigation and tactical training in both instrument meteorological conditions (IMC) and visual meteorological conditions (VMC) below 10 000 ft MSL at airspeeds in excess of 250 kt IAS.
il	instrument landing
ILS critical area	An area of defined dimensions in the vicinity of localizer (LOC) and glide path (GP) antenna arrays within which vehicle and aircraft operations may interfere with the radio signal transmitted by the ILS
ILS glide path angle	The angle between a straight line representing the mean of the ILS glide path (GP) and the horizontal
ILS reference datum	A point at a specified height that is located vertically above the intersection of the runway centreline and the threshold and through which the downward extended straight portion of the glide path (GP) passes
immediate takeoff	An expression used by ATC to indicate that the pilot is expected to taxi onto the runway and take off in one continuous movement
IMMELMANN turn	A vertical turn up designed to solve a high angle-off and high aspect angle attack situation
in-flight meteorological information	Specific meteorological information provided to international air traffic
in-flight refuelling	A procedure used by the military to transfer fuel from one aircraft to another during flight
in-flight report	A report from an aircraft in flight prepared in conformity with requirements for position and operational and/or meteorological reporting
indicated airspeed	The uncorrected reading on the airspeed indicator
indicated altitude	The altitude as shown by an altimeter. On a pressure or barometric altimeter, it is altitude as shown uncorrected for instrument error and uncompensated for variation from standard atmospheric conditions.
inertial stabilized platform (<редк.>)	GSP	Michae­lBurov
information request	A message requesting that a communications search be carried out in a defined area utilizing government circuits and local telephone
information service	An ATS consisting of the following: (a) aircraft movement information service (AMIS) alerting service; and (c) flight information service
IR flare	infrared flare
initial	A point 3 to 5 mi. prior to the threshold on the upwind leg, and usually 500 ft above the normal aerodrome traffic circuit, where military aircraft join the aerodrome traffic circuit to conduct an overhead break.