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IEW 1 Integrated electronic warfare; S adds system,
UAV adds unmanned air vehicle.
2 Intelligence/electronic warfare; CS adds common
sensor, S adds system, UAV adds unmanned air vehicle.
IEWS 1 Information and electronic-warfare system.
2 See IEW.
IF 1 Intermediate frequency (often i.f.).
2 Instrument flight, or flying.
3 Intensive flying (UK, RN).
4 Independent Force (RAF, 1918).
5 Ice fog.
6 Intermediate, or initial, fix.
I/F Interface.
I/F module Inlet and fan module.
IFA International Federation of Airworthiness; 120
members in 47 countries engaged in manufacturing, operating,
insuring, etc.; Secretariat, East Grinstead RH19
1BP] (Int.).
IFAA International Flight Attendants’ Association.
IFAC International Forum for Air Cargo [office,
Warrendale, PA] (Int.).
I-Fact Indirect-fire forward air control trainer.
iFACTs Interim future area control tools support
(NATS).
Ifalda International Federation of AirLine Dispatchers
Associations [office, Agincourt, ON, Canada] (Int.).
Ifalpa International Federation of Airline Pilots’
Associations [95 members; admin. office, Chertsey KT16
9AP, UK; Tech.Standards, Stevensville, MD21666, US]
(Int.).
IFANS, Ifans International Federation for the application
of standards.
Ifapa, IFAPA International Foundation of Airline
Passengers’ Associations.
IFAS See FISA1.
IFast Integrated flexibility (or facility) for avionics
system test (USAF).
Ifatca, IFATCA Internationl Federation of Air Traffic
Controllers’ Associations [office, Montreal].
IFATE International Federation of Airworthiness
Technology and Engineering.
Ifatsea, IFATSEA International Federation of Air-
Traffic Safety Electronics Associations; office, London.
IFB Invitation for bid.
IFBP In-flight best procedure[s].
IFBS Individual flexible barrier system.
IFC Incentive-fee contract(ing).
IFCA International Flight Catering Association (office
UK).
IFCNC Integrated flight-control and navigation
computer.
IFCS 1 Integrated, or intelligent, flight-control system.
2 Integrated fire-control system.
IFDAPS Integrated flight-data processing system.
IFDFS In-flight duty-free shop.
IFDL Inter-/intra-in-flight data link.
IFE 1 In-flight emergency.
2 In-flight entertainment [N adds network, S system].
IFEO International Flight Engineers’ Organization
[office, Chertsey, KT16 9AP, UK] (Int.).
IFESS Integrated flight entertainment and services
system.
IFF 1 Identification friend or foe.
IFPS
2 International Flying Farmers Inc. [office, Wichita,
KS67277–9124] (Int.).
3 Institute of Freight Forwarders, (Int. office
Richmond, Surrey, (UK).
IFFAA International Federation of Forwarding Agent
Associations (now IFFFA).
IFFCC Integrated flight and fire-control computer.
IFFCP IFF (1) control panel.
IF/FCS Integrated fire/flight control system.
IFFFA International Federation of Freight
Forwarders’ Associations; office, Zurich.
IFGR Information for global research (USAF).
IFHA International Federation of Helicopter
Associations (office, US).
IFI International Friction Index.
IFIAT See FITAP.
Ifics In-flight interceptor communications [or control]
system.
I-file Intelligence (surveillance computer).
IFIM International Flight Information Manual (US).
IFIS 1 Independent flight inspection system (for ILS,
Vortac, etc).
2 Independent frequency-isolation system.
3 Integrated flight-information system[s].
IFM 1 Instantaneous frequency measurement.
2 In-flight monitor.
3 International Formula Midget [ = Formula 1].
IFMA In-flight mission abort.
IFME In-flight medical emergency.
IFMIS Integrated force management info system.
IFMP Integrated financial management plan (NASA).
IFMR IFM (1) receiver.
IFM/SHR IFM (1) superheterodyne receiver.
IFMU Integrated flight-management unit (UAV).
IFMW Information for mobile warfare (USAF).
IFN Institut Français de Navigation [office, F-75007
Paris] (F).
IFO 1 International field office.
2 Improved first-order [approximation].
IFOBL In-flight-operable bomb lock.
IFOG Interferometric fibre-optic gyro.
IFOP Intensive flight-operations program.
IFOR Implementation Force (NATO).
IFOSTP International follow-on structural test
programme.
IFoV, IFOV Instantaneous field of view.
IFP 1 Initial flightpath.
2 In-flight performance [computer program].
3 In-flight phone.
4 Integrated flight planner.
IFPA 1 International Fighter Pilots’ Academy (Slovak
Republic).
2 IFPS (1) area.
3 Indirect fire precision attack.
IFPC Integrated flight and propulsion control (STOL);
S adds system.
IFPG 1 Intelligent flight-path guidance.
2 International Frequency Planning Group.
IFPL 1 In-flight power loss.
2 ICAO flight plan.
IFPM In-flight performance monitor.
IFPS 1 Integrated, or initial, flight-plan processing
system.
2 Intra-formation positioning system.
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