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LAAS - Local Area Augmentation System (in USA)
LAMS - Light Aircraft Maintenance Schedule, the CAA-approved
schedule for fixed-wing light aircraft below 2,730 kg auw whose Cs of
A are valid for three years subject to compliance with LAMS.
LARS - Lower Airspace Radar Advisory service, available to all
aircraft flying in uncontrolled UK airspace from 3,000 feet amsl to
FL95. See also MMARS, RAS and RIS, below.
lat - latitude.
LATCC - London Area & Terminal Control Centre at West Drayton,
near Heathrow.
lbf - engine thrust in pounds force
LCD - liquid crystal display
lczt - (ILS) localizer (USA)
LDA - landing distance available.
LED - light emitting diode
LF - low-frequency radio waves with frequencies in the 30-300
kHz band.
LITAS - low-intensity two-colour approach system.
LLTV - low light level television.
LLZ - localizer ((USA).
LOC - localiser. The azimuth guidance portion of an instrument
landing system.
locator - medium-frequency non-directional radio beacon used as
an aid to establishing yourself on final approach during an instrument
landing procedure. Also LOM, locator outer marker.
lon(g) - longitude
Loran - low-frequency hyperbolic radio long-range navigation
system which measures time difference between reception of
synchronised signals transmitted from ground transmitters. Loran C,
operates in the 100 110 kHz frequency band with an operating range of
600-1,500 nm independent of line-of-sight, and is becoming very
popular among GA aircraft operators in the USA.
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