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I
I 1 Electric current,; see ampere.
2 Moment of inertia. suffixes include XX roll, YY pitch,
ZZ yaw, R rotor [of engine or helicopter etc], ω angular
momentum, and numbers for structural webs, etc.
3 Second moment of area
4 Luminous intensity.
5 Total heat content.
6 Total impulse, usually non-dimensional.
7 Intensity of turbulance.
8 Immigration.
9 Initial approach.
10 Instrument.
11 In-line.
12 Interrupted.
13 Prefix, direct-injection engine (US).
14 Aircraft category: human-powered aircraft (FAI).
i 1 Intensity of rainfall.
2 ‘Square root of minus 1’.
3 Instantaneous current.
4 Helicopter blade control-point index.
I-band EM radiation, 37.5–30 mm, 8–10 GHz.
I-beam One of I section.
I-display When radar aerial pointed at target latter
appears as circle at radius proportional to range; when
aerial points away from target latter appears as segment
showing magnitude/ direction of error.
I-local Index of local warnings [weather].
I-section Structural beam with vertical web and flat
upper and lower booms.
I 2 Image-intensifying.
I 2 F Intelligent influence fuze.
I 2 R The heat generated by an electric current.
I 2 S 1 Infra-red imaging system.
2 Integrated information system, cabin wireless LAN
for passengers based on 802.11 and ARINC–763.
I 2 t Current squared times time, characteristic of trip
switch.
IA 1 Initial approach (FAA).
2 Inspection authorization (FAA).
3 Input axis.
4 Imagery analysis.
5 Initial attack (firefighting).
Ia Anode current.
IAA 1 International Academy of Astronautics. Paris.
2 International Aerospace Abstracts (AIAA).
3 Irish Aviation Authority [office, Dublin 2] (Ireland).
4 See IAA (E) and IAA(O).
IAAA International Airforwarder and Agents
Association. [office, Alexandria, VA].
IAAC 1 International Agricultural Aviation Centre
(HQ in UK).
2 International Association of Aircargo Consolidators.
3 Information Assurance Advisory Council (UK).
IAAE Institution of Automotive & Aeronautical
Engineers (Australia).
IAA(E) Inspector of Air Accidents (Engineering)
[DETR, UK].
IAAF International Agricultural Aviation Foundation
[office, Walla Walk, WA99362] (Australia).
IAAFA Inter-American Air Forces Academy (US).
IAAH International Association of Aviation
Historians.
IAAI 1 International Airports Authority of India.
2 Indonesian Aeronautical and Astronautical Institute.
IAAIA International Association of Airline Internal
Auditors.
IAA(O) Inspector of Air Accidents (Operations)
[DETR, UK]
IAARC International Administrative Aeronautical
Radio Conference.
IAASM International Academy of Aviation & Space
Medicine Montreal.
IAASS International Association for the Advancement
of Space Safety.
IAATC International Association of Air Training
Centers.
IAB Investment Approvals [until 2003 Appraisals]
Board [senior procurement body; MoD] (UK).
IABA International Association of Aircraft Brokers
and Agents.
IABCS Integrated aircraft brake control system.
IABG Industrieanlagen Betriebs GmbH (G).
IAC 1 Intelligence Analysis Center (US).
2 International Aerobatics Club [office Oshkosh, WI
54093–3086] (Int.).
3 Instrument-approach chart.
4 Integrated avionics computer.
5 See TIACA.
6 Instituto de Aviação Civil [20021–010 Rio de Janeiro]
(Brazil).
7 Irish Aviation Council [Greystones, Co. Wicklow]
(Ireland).
8 Irish Aviation Club Ltd [Dublin 14] (Ireland).
IACA International Air Carrier Association [head
office, B–1930 Zaventem; UK office E Grinstead RH19
4QA] (Int.).
IACAC International Association of Civil Aviation
Chaplains (office JFK airport, NY).
IAC/AV Interstate Aviation Committee/Aviation
Register (R, CIS).
IACC Inter-agency Air Cartographic Committee (US).
IACD Intelligent adviser [not advisor] capability
demonstrator.
IACES International Air Cushion Engineering Society.
IACG Inter-agency consultative group (US, USSR,
Europe, Japan, space science).
IACP Independent Association of Continental Pilots.
IACS Integrated avionics [also air-traffic] control
system.
IACSP International Aeronautical Communications
Service Provider.
IACS Integrated avionics [also air-traffic] control
system.
IACZ Inter Airline Club Zurich (Int.).
IAD 1 Fighter Division (R).
2 Integrated antenna detector.
IADB Inter-American Defense Board [Washington,
DC].
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