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position of
Survival beacons transmit
a signal which enables search aircraft/
vessels to rapidly locate accident
survivors still in the sea. 2. to position

The digital flight data recorder is
located in the tail section.
location location /ləυ|keʃ(ə)n/ noun 1. a
place where something can be found

Before take-off, cabin staff brief passengers
on the location of emergency exits
and life jackets. 2. finding where something
is
Rapid location of survivors is
important.
locator locator /ləυ|ketə/ noun a non-directional
beacon used as an aid to final
approach
Terminal control areas
require charts which show detail on a
large scale – terminal VORs, locator
beacons, ILS installations, holding patterns,
arrival/departure and transit
routes.
lock lock /lɒk/ noun a device operated by a
key for securing a door, etc.  verb 1. to
secure a door by turning a key in the
lock
Lock the door before leaving the
building. 2. to be in or to move into a
secure position 3. to block or prevent
moving
Anti-skid braking systems
units are designed to prevent the brakes
locking the wheels during landing. 4. 
to lock on to search for, find and follow
a target with a thin radar beam
locking pin locking pin /lɒkŋ pn/ noun a short
metal device to prevent a nut from turning
log log /lɒ$/ noun a written record of a
flight, flying hours, maintenance
checks, etc., for an aircraft, engine or
propeller  verb to write an entry in a
log book or on a log sheet
He calculates
headings to steer for each flight
stage and logs them.
logic logic /lɒd"k/ noun electronic circuits
which obey mathematical laws
Circuit
packs consist of basic decisionmaking
elements, referred to as logic
gates, each performing operations on
their inputs and so determining the
state of their outputs.
logical 140
logical logical /lɒd"k(ə)l/ adjective referring
to something which, because of
previous experience or knowledge, is
natural or expected
Pre-flight checks
on light aircraft are made in a logical
manner from one side of the aircraft to
the other.
longeron longeron /lɒnd"(ə)rən/ noun the
main structural part of an aircraft fuselage
extending from nose to tail
Longerons
are normally used in aircraft
which require longitudinal strength for
holds underneath the floor.
long-haul long-haul /lɒŋ hɔl/ adjective travelling
over a long distance
Crew flying
long-haul routes have to adapt to time
changes. Opposite short-haul
longitude longitude /lɒŋ$tjud/ noun the
angular distance on the Earth’s surface,
measured east or west from the prime
meridian at Greenwich, UK, to the
meridian passing through a position,
expressed in degrees, minutes, and seconds

The centre of London is latitude
51°30’N, longitude 0°5’W. Compare
latitude
longitudinal longitudinal /lɒŋ$|tjudn(ə)l/
adjective in a lengthwise direction
longitudinal axis longitudinal axis
/lɒŋ$tjudn(ə)l kss/ noun the
axis of the aircraft which extends from
the nose to the tail.
axis, roll
long-range long-range /lɒŋ rend"/ adjective
1. covering a long distance
longrange
radar 2.  long-range weather
forecast covering a period more than 5
days ahead
lookout /lυkaυt/ noun a careful
watch
Keep a careful lookout for
other aircraft.  to be on the lookout
for to watch carefully for something
loop loop /lup/ noun a flight manoeuvre in
which the aircraft rotates, nose up,
through 360° while holding its lateral
position
loop antenna loop antenna /lup n|tenə/ noun
circular-shaped conductive coil which
rotates to give a bearing to a ground station
LORAN LORAN abbreviation long-range air
navigation system
lose lose /luz/ verb not to have something
any longer (NOTE: losing – lost)  to
lose altitude to descend from higher to
lower altitude
loss loss /lɒs/ noun no longer having
something
The pilot reported loss of
engine power.  loss of control no
longer being able to control  loss of
life death in an accident  loss of a signal
disappearance of a signal
The
term attenuation means the loss of
strength of a radio signal.
　
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