Dictionary of Aviation上(26)

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behaving towards something or somebody
 he has an excellent attitude
towards his training programme he is
positive and motivated in his training
programme
attitude heading reference system attitude heading reference system
/ttjud hedŋ ref(ə)rəns
sstəm/ noun full form of AHRS
attitude indicator attitude indicator /ttjud
ndketə/ noun a flight instrument
that gives the pilot information about
the position of the aircraft in the air in
relation to the horizon
In light aircraft,
the attitude indicator is situated
on the instrument panel, directly in
front of the pilot.
pitch, bank
COMMENT: The attitude indicator is
sometimes referred to as the ‘artificial
horizon’. In instrument flight training,
the attitude indicator is the primary
reference instrument. It is positioned
on the instrument panel directly in front
of the pilot.
attract attract /ə|trkt/ verb 1. to cause to
draw near
If two magnets, with unlike
poles are brought together, they will
attract each other.  to attract attention
to behave in such a way that people
will notice you 2. to cause people to
want to have or do something
attraction attraction /ə|trkʃən/ noun 1. a
force that draws things towards something

The strength of the magnetic
force will depend, amongst other
things, on the magnitude of attraction at
the magnetic source. 2. a quality that
causes people to want to have or do
something
The attraction of flying
was the factor which made him decide
to train as a pilot.
attractive attractive /ə|trktv/ adjective 1.
referring to something you feel you
would like to have
After long talks, the
prospective buyer made a financially
attractive offer for the aircraft. 2. nice
to look at
ATZ ATZ abbreviation aerodrome traffic
zone
audible audible /ɔdb(ə)l/ adjective possible
to hear
The fire detection system
should contain an audible warning
device.
audio audio /ɔdiəυ/ noun an audible sound
or sound signal
The diagram shows an
amplitude modulation case where the
lower frequency of the audio is about
300 Hertz.
augment augment /ɔ$|ment/ verb to make
larger by adding something
The sea
breeze may augment the up-slope
motion of an anabatic wind.
aural aural /ɔrəl/ adjective referring to
hearing
The aural and visual alerts
will continue until the crew take action
to cancel them. (NOTE: Aural is sometimes
pronounced /aυrəl/ to show the
difference with oral.)
authorise authorise /ɔθəraz/, authorize verb
to allow officially, to give permission

A signature is required to authorise the
repair.
authorised authorised /ɔθərazd/, authorized
adjective officially allowed, permitted

Aircraft with a maximum authorised
weight of 12,500 lb or less.  an
authorized person a person who has
been given power to act and perform
particular tasks or duties
authoritative authoritative /ɔ|θɒrtətv/ adjective
in the manner of somebody with
authority, in a commanding way  crew
must act in an authoritative manner
crew must give firm instructions or
orders
authority authority /ɔ|θɒrti/ noun 1. complete
control or power over something

While boarding, the captain has the
authority to ask an unruly passenger to
leave the aircraft. 2. an official or gov-
27 average
ernment body with the power to make
decisions
auto- auto- /ɔtəυ/ prefix automatic or automated
autogiro autogiro /ɔtəυ|d"arəυ/ noun an
aircraft that uses a propeller to produce
forward motion and has an unpowered
horizontal rotor for lift and stability
autoland autoland /ɔtəυlnd/ abbreviation
automatic landing
automate automate /ɔtəmet/ verb to make
e.g. a device or procedure automatic 
automated systems systems which
have been made less dependent on
direct human control or management
automatic automatic /ɔtə|mtk/ adjective 1.
done without needing to think
In the
early stages of training, student pilots
have to think about the use of the flying
controls, but after a while these actions
become automatic. 2. which works by
　
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