Idle thrust means the jet thrust obtained with the engine power control level set at the stop for the least thrust position at which it can be placed.
Identification marks of an aircraft, registered aircraft consist of a nationality marks and registration mark (example, PK-XXX). The nationality shall precede the registration marks and shall be separated from it by a hyphen.
Identification beacon. An aeronautical beacon emitting a coded signal by means of which a particular point of reference can be identified.
IFR. The symbol used to designate the instrument flight rules.
IFR flight. A flight conducted in accordance with the instrument flight rules.
IMC. The symbol used to designate instrument meteorological conditions.
IFR conditions means weather conditions below the minimum for flight under visual flight rules.
IFR over the top, with respect to the operation of aircraft, means the operation of an aircraft over the top on an IFR flight plan when cleared by air traffic control to maintain “VFR conditions” or “VFR conditions on top”.
Incident. An occurrence, other than an accident, associated with the operation of an aircraft which affects or could affect the safety of operation.
Incompatible. Describing dangerous goods which, if mixed, would be liable to cause a dangerous evolution of heat or gas or produce a corrosive substance.
Independent parallel approaches. Simultaneous approaches to parallel or near-parallel instrument runways where radar separation minima between aircraft on adjacent extended runway centre lines are not prescribed.
Independent parallel departures. Simultaneous departures from parallel or near-parallel instrument runways.
Indicated airspeed means the speed of an aircraft as shown on its pitot static airspeed indicator calibrated to reflect standard atmosphere adiabatic compressible flow at sea level uncorrected for airspeed system errors Indonesia aircraft means an aircraft registered and bearing Indonesian nationality and registration marks.
Indonesian Armed Forces Aircraft means a state used officially by the Armed Forced of the Republic of Indonesia Initial approach segment. That segment of an instrument approach procedure between the initial approach fix and the intermediate approach fix or, where applicable, the final approach fix or point.
Instrument means a device using an internal mechanism to show visually or aurally the attitude, altitude, or operation of an aircraft or aircraft part. It includes electronic devices for automatically controlling an aircraft in flight.
Instrument approach procedure. A series of predetermined manoeuvres by reference to flight instruments with specified protection from obstacles from the initial approach fix, or where applicable, from the beginning of a defined arrival route to a point from which a landing can be completed and thereafter, if a landing is not completed, to a position at which holding or en-route obstacle clearance criteria apply.
Instrument flight time. Time during which a pilot is piloting an aircraft solely by reference to instruments and without external reference points.
Instrument ground time. Time during which a pilot is practising, on the ground, simulated instrument flight in a synthetic flight trainer approved by the Licensing Authority.
Instrument meteorological conditions (IMC) means meteorological conditions expressed in term of visibility, distance from cloud, and ceiling, less than the minimum specified for visual meteorological conditions.
Instrument runway. One of the following types of runways intended for the operation of aircraft using instrument approach procedures:
a) Non-precision approach runway. An instrument runway served by visual aids and
a non-visual aid providing at least directional guidance adequate for a straight-in approach.
b) Precision approach runway, category I. An instrument runway served by ILS and/or
MLS and visual aids intended for operations with a decision height not lower than 60 m
(200 ft) and either a visibility not less than 800 m or a runway visual range not less than 550 m.
c) Precision approach runway, category II. An instrument runway served by ILS and/or
MLS and visual aids intended for operations with a decision height lower than 60 m (200 ft)
but not lower than 30 m (100 ft) and a runway visual range not less than 350 m.
d) Precision approach runway, category III. An instrument runway served by ILS and/or MLS
to and along the surface of the runway and: A - intended for operations with a decision height
lower than 30 m (100 ft), or no decision height and a runway visual range not less than 200 m.
B - intended for operations with a decision height lower than 15 m (50 ft), or no decision height
and a runway visual range less than 200 m but not less than 50 m. C - intended for operations
with no decision height and no runway visual range limitations.
Instrument time. Instrument flight time or instrument ground time.
Integrity (aeronautical data). A degree of assurance that an aeronautical data and its value has not been lost nor altered since the data origination or authorized amendment.
International operating agency. An agency of the kind contemplated in Article 77 of the Convention.
Inter-centre communications (ICC). ICC is data communication between ATS units to support ATS, such as notification, coordination, transfer of control, flight planning, airspace management and air traffic flow management.
Intermediate system (IS). A system which performs relaying and routing functions and comprises the lowest three layers of the OSI reference model.
Internet communications service. The internet communications service is an internetwork architecture which allows ground, air-to-ground and avionics data subnetworks to interoperate by adopting common interface services and protocols based on the ISO/OSI reference model.
Interpilot air-to-air communication. Two-way communication on the designated air-to-air channel to enable aircraft engaged in flights over remote and oceanic areas out of range of VHF ground stations to exchange necessary operational information and to facilitate the resolution of operational problems.
Integrated Aeronautical Information Package. A package which consists of the following elements:
• AIP, including amendment service;
• Supplements to the AIP;
• NOTAM and PIB;
• AIC; and
• checklists and lists of valid NOTAM.
• AIP, including amendment service;
• Supplements to the AIP;
• NOTAM and PIB;
• AIC; and
• checklists and lists of valid NOTAM.
Integrity (aeronautical data). A degree of assurance that an aeronautical data and its value has not been lost nor altered since the data origination or authorized amendment.
International airport. Any airport designated by the Contracting State in whose territory it is situated as an airport of entry and departure for international air traffic, where the formalities incident to customs, immigration, public health, animal and plant quarantine and similar procedures are carried out.
International NOTAM office (NOF). An office designated by a State for the exchange of NOTAM internationally.
Intermediate approach segment. That segment of an instrument approach procedure between either the intermediate approach fix and the final approach fix or point, or between the end of a reversal, racetrack or dead reckoning track procedure and the final approach fix or point, as appropriate.
Investigation. A process conducted for the purpose of accident prevention which includes the gathering and analysis of information, the drawing of conclusions, including the determination of causes and, when appropriate, the making of safety recommendations.
Investigator-in-charge. A person charged, on the basis of his or her qualifications, with the responsibility for the organization, conduct and control of an investigation.
Isogonal. A line on a map or chart on which all points have the same magnetic variation for a specified epoch.
Isogriv. A line on a map or chart which joins points of equal angular difference between the North of the navigation grid and Magnetic North.
Joule (J). The work done when the point of application of a force of 1 newton is displaced a distance of 1 metre in the direction of the force.
Kelvin (K). A unit of thermodynamic temperature which is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.
Kilogram (kg). The unit of mass equal to the mass of the international prototype of the kilogram.
Kite means a framework, covered with paper, cloth, metal, or other material, intended to be flown at the end of a rope or cable, and having as its only support the force of the wind moving past its surfaces.
Knot (kt). The speed equal to 1 nautical mile per hour.
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