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Hazard
A hazard is a state or set of conditions that together
with other conditions in the environment could
lead to an accident.
Heading
A fixed line on the RMI compass card
INH
Inhibit; as in TAWS INH
Lubber Line
A fixed line on the Terrain display that is aligned
with the magnetic ground track of the aircraft when
“TRK” is displayed and aligned with the
longitudinal axis of the aircraft when “HDG” is
displayed.
Lateral Flight
Path
Horizontal component of a flight path.
Level Flight
Flight operations where vertical speed is less than
500 feet per minute.
Minimum
Descent Altitude
The lowest altitude, specified in feet above MSL,
to which landing (not using a glide slope) is
permitted providing the runway environment is in
sight, and the aircraft is in a position to descend for
a normal landing.
Missed Approach
An aborted approach resulting in an immediate
climb and/or turn followed by a route directly to a
missed approach point.
Nuisance Alert
An inappropriate alert, occurring during normal
safe procedures.
On-Side Equipment
associated
with
the same position as the
installed pilot or copilot position.
OVRD
Override; as in GPWS Glide Slope Override
PDA
Premature Descent Alert. This alert occurs if the
aircraft is below a normal altitude as it approaches
within 15nm of an airport.
Search Area
An area of airspace around the aircraft’s current
and projected path that is used to define an FLTA
alert condition.
Selectable Items
Modifiable values, multiple-choice listings
displayed on multiple lines, and requests that an
operator may select.
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PAGE 69
Track
A fixed line on the terrain display that is aligned
with the magnetic ground track of the aircraft.
Vertical Speed
The aircraft’s rate of climb or descent in feet per
minute.
Visual Alert
The display of information to indicate a condition,
situation, or event requiring flight crew attention.
Visual Descent
Point
A defined point on the final approach course of a
non-precision straight-in approach procedure, from
which normal descent from the MDA to the
runway touchdown point may be commenced,
provided the required visual reference is clearly
visible to the pilot.
Waypoint
A position on the GPS/FMS flight plan represented
on-screen by a “star” symbol.
Warning Alert
An alert for a detected terrain threat that requires
immediate crew action.
70
o
ARC View
A forward-looking 70-degree ARC view that
maximizes the display of the ground track ahead of
the aircraft where the lubber line is centered in the
ARC, and the aircraft’s current position, is
depicted near the bottom of the display.
360
o
FULL View
A 360-degree FULL view where the aircraft’s
current position is depicted at the center of the
display.
