. The fin provides directional stability about the vertical axis. Also called ver-tical stabiliser
final /fa.n(.)l/ noun the end part of a series or process . adjective coming at the end . final assembly the last in a series of stages of construction of an aircraft when all the pre-assembled parts are put together
final approach /fa.n(.)l .pr.υt./ noun 1. a flight path in a direction along the extended centre line of the runway on which a plane is about to land . The aspect of the runway on final approach helps the pilot to judge height and progress. 2. the last stage of an aircraft’s descent before landing, from when it turns into line with the runway to the procedures immediately before it lands
fine /fa.n/ adjective 1. of superior quality, skill, or appearance . a fine day a day when the weather is good . fine weather good weather 2. very small in size, thickness or weight . Cirrus cloud has a fine, hair-like appearance. . fine powder powder consisting of very small particles . fine spray a spray con-sisting of very small drops of liquid 3. . fine wire very thin wire 4. referring to the pitch or blade angle setting of the
FIR 96
propeller 0 Fine pitch enables full engine speed to be used on take-off and coarse pitch allows an economical engine speed to be used for cruising.
FIR abbreviation flight information region fire /fa../ noun an area of burning 0 To
guard against the risk of fire, passen-gers are requested not to smoke in the toilets.口 an engine fire a fire in an engine verb to shoot a gun, to
launch something such as a flare or a rocket
fire deluge system /，fa.. 'delju:d3，s.st.m / noun a system which extin-guishes fire by spraying large quantities of water on it 0 A lever actuates the fire deluge system.
fire detection system /， fa.. d. 'tek..n，s.st.m / noun a system to detect the presence of fire in an aircraft
fire extinguisher /'fa..r .k，st..gw... / noun a portable device full of foam, water, powder, etc., for putting out fires
fireproof /'fa..pru:f/ adjective
designed to resist the effect of fire 0 A fireproof bulkhead is provided to sepa-rate the cool area of the engine from the hot area.
fire triangle /'fa.. ，tra...g.l / noun
the illustration of the chemistry of fire as the three sides of a triangle represent-ing fuel, oxygen and heat 0 If fuel, oxy-gen or heat is removed from the fire tri-angle, combustion will cease.
first aid kit /，f3:st 'e.d，k.t / noun a
small pack containing plasters, band-ages, antiseptic cream, etc., to be used in case of an emergency
first officer /，f3:st '.f.s. / noun the
officer who is second-in-command to
the captain of an aircraft FIS abbreviation flight information service
fishtail /'f..te.l/ verb to move the tail of an aircraft from side to side as a way of reducing speed
FISO abbreviation flight information
service operator fit /f.t/ adjective in good physical con-dition, healthy 0 Keep fit with diet and
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