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2 Forward Air Control[ler], now called JTAC.
3 Flight-augmentation computer.
4 Federal Airports Corporation (Australia).
5 Federal Aviation Commission (US, 1934–36).
6 Farnborough Aerospace Consortium [550+ companies,
office GU14 0LX] (UK).
7 Fast attack craft (marine).
8 Federaciòn Aerea de Chile [general aviation, office
Santiago] (Chile).
Fac Facility, facilities.
FAC (A), FAC-A = FAC (2) airborne, the airborne
controller in a tactical situation
FACCE See FAC 2 E.
FACE Future airline core environment [IT system]
(Int.).
face 1 Any exposed quasi-flat surface, such as main area
of turbine disk.
2 Any surface for mating with another.
3 Open end of duct to be joined to another, including
front of gas-turbine-engine inlet.
4 Either surface of propeller or helicopter-rotor.
face alignment Distance perpendicular to chord from
propeller or rotor blade chord centreline to flat face of
blade at any station.
faceblind firing Method of firing ejection seat in which
occupant pulls roller blind at top of seat down over his
face, thus shielding latter from airstream on leaving
aircraft.
faceplate 1 Disc mounted on nose of lathe spindle for
rotating work between centres or for gripping asymmetric
item of short length.
2 Accessory mounting pad.
3 Transparent front of pressurized helmet.
FaCET Falcon combined-cycle engine technology
(Darpa).
Facet Fault-assisted circuits for electronic training.
facet Panel forming part of external visuals of simulator.
The F-22 FMT has nine.
faceted aircraft One whose external surface is made up
of flat 2-D panels. Such an aircraft is theoretically invisible
to hostile radars except for brief instants when one
face is precisely normal to the incident signal. Such
aircraft have severe flight-control limitations, and
increased computer power now enables LO aircraft to
have better aeroydynamics.
Facets Future anti-air concepts experimental technology
(also terminal) seeker.
facilitation Portmanteau word meaning making air
travel easier for passengers.
facility 1 Physical plant, buildings and equipment
(previously US usage).
2 Any part of adjunct of a physical plant or installation
which is an operating entity.
3 An activity or installation which provides specific
operating assistance to military or civil air operations.
facility availability Actual/specified operating times,
usually as percentage.
facility performance category See categories (3).
Faco, FACO Final assembly and check-out.
FACP Forward air control post.
FACRI Flight Automatic Control Research Institute
(China).
FACS Fully automatic compensation system.
facsimile Telecommunications process in which picture
FAF
of image is scanned and signals used locally or remotely,
sent by telephone or TV, to reproduce * or likeness of
subject image.
Fact, FACT French air force ATM co-ordination tool.
Factar Follow-up action on accident reports.
Factor Development of functional concepts from
EATMS operational requirements (Euret).
factored field lengths Any distance relative to CTOL
operations (TOR, EMD, TOD etc) multiplied by factor to
take account of engine failure at V 1 , slippery surface or
any other hazard.
factoring Process of selecting and applying appropriate
factors (of safety) in such areas as design and stress calculations,
performance estimates etc.
factor of safety 1 Factor by which limit load is multiplied
to produce load used in design of aircraft or part;
intended to provide margin of strength against loads
greater than limit load, and against uncertainties in
materials, construction, load estimation and stress
analysis.
2 Ratio of ultimate strength to actual working stress or
maximum permissible stress in use of material component.
factory loaded Propellant charge or explosive filling
added in plant before delivery.
factory remanufactured Product, usually an engine,
indistinguishable from new.
Facts 1 FLIR-augmented Cobra Tow sight.
2 Fighter-aircraft-control training system.
FAC 2 E Fighter air command and control enhancement.
FAD 1 Fleet air defense (US).
2 Fast-action device.
3 Fighter aerodynamics development.
4 Feature analysis data.
5 Flexible-aircraft dynamics.
6 Funding authorization document.
7 Fuel advisory departure.
8 Forsvars & Aerospaceindustrien i Danmark.
FADA Federación Argentina de Aeroclubes.
FADD Fatigue and damage data.
fade Decrease in received signal strength without
change of receiver controls.
Fadec Full-authority, or fully authoritative, digital
engine (or electronic) control.
faded Radio word meaning ‘air-intercept contact has
disappeared from reporing station’s scope, and further
information is estimated’ (DoD).
fade-out Fading in which received signal strength is
reduced below noise level of receiver. Also known as radio
fade-out, Dellinger effect, Mogel-Dellinger effect (see
blackout).
fading Variation of radio field strength caused by
change in transmission medium.
FADOLC Full-authority direct organic lift control.
FADR Fixed [-site] air-defence radar.
FADS, Fads Flush, or flexible air-data system.
FAE 1 Fuel/air explosive; large class of ordnance
devices.
2 Federación de Aeronáutica Española (Spain).
Faeshed FAE store, helicopter delivery.
FAEI Federation of Aerospace Enterprises in Ireland.
FAF 1 Final-approach fix.
2 Full and free [flight controls].
3 Confusingly, French Air Force.
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