The undercarriage failed to retract and the captain had to jettison the fuel over the sea before landing the aircraft.
join /d..n/ verb 1. to connect . Join
the two wires. . With a pencil and ruler, join point A to point B. 2. to bring together to make one whole part . Wing panels are joined by rivets. 3. to become a member of a club, etc. . She had to pay a membership fee to join the gliding club.
joint /d..nt/ noun the place at which two or more things are joined together .
Fuselage frame rings are formed with only one joint. . adjective combined, with two or more things linked together or shared by two or more people . a joint effort
Joint Aviation Authorities
/d..nt e.vie..(.)n .θ.r.tiz/ noun
a body, consisting of European repre-sentatives, set up to control and regulate aspects of civil aviation in Europe . The Joint Aviation Authorities is an arrangement between European coun-tries which has developed since the 1970s. Abbreviation JAA
COMMENT: The Joint Aviation
Authorities currently has 37 member
states, including all the countries of the
European Union.
Joint Aviation Requirement
/d..nt e.vie..(.)n r.kwa..m.nt/ noun a JAA requirement concerning design, manufacture, maintenance and operation of aircraft. Abbreviation JAR
(NOTE: JARs of relevance to mainte-nance staff are JAR-145, JAR-OPS 1 and JAR-OPS 3.)
joule /dul/ noun an International System unit of electrical, mechanical, and thermal energy . Ignition units are measured in joules (1 joule = 1 watt per second). (NOTE: It is usually written J with figures: 25J.)
jumbo /dmb.υ/ noun same as jumbo jet (informal) jumbo jet /dmb.υ det/ noun a
large wide-bodied aircraft capable of
carrying several hundred passengers jump jet /dmp det/ noun a jet air-craft with fixed wings that can take off and lands vertically
junction /d.k..n/ noun a place where two things meet . the junction of two wires
junction box /d.k..n b.ks/
noun electrical unit where a number of wires can be connected together
K
K symbol kelvin katabatic /kt.bt.k/ adjective
referring to a cold flow of air travelling down hillsides or mountainsides . Due to katabatic effects, cold air flows downwards and accumulates over low ground. Compare anabatic
katabatic wind /kt.bt.k w.nd/
noun a wind which occurs when the air in contact with the slope of a hill is cooled to a temperature lower than that in the free atmosphere, causing it to sink. Compare anabatic wind
kelvin /kelv.n/ noun the base SI unit of measurement of thermodynamic temperature. Symbol K (NOTE: Temper-atures are shown in kelvin without a degree sign: 20K. Note also that 0°C is equal to 273.15K.)
kerosene /ker.sin/, kerosine noun
a thin fuel oil made from petroleum .
Kerosene will only burn efficiently at, or close to, a ratio of 15:1.
Kevlar /kevl./ noun a trademark for a light and very strong composite mate-rial . Kevlar and carbon fibre account for a large percentage of a modern jet airliner’s structure.
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