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airplanes with approach speeds of 50 knots, or more.
(c) 120 feet for other runways serving small
airplanes with approach speeds of less than 50 knots.
b. Inner‐approach OFZ. The inner‐approach OFZ
is a defined volume of airspace centered on the
approach area. The inner‐approach OFZ applies only
to runways with an approach lighting system. The
inner‐approach OFZ begins 200 feet from the runway
threshold at the same elevation as the runway
threshold and extends 200 feet beyond the last light
unit in the approach lighting system. The width of the
inner‐approach OFZ is the same as the runway OFZ
and rises at a slope of 50 (horizontal) to 1 (vertical)
from the beginning.
c. Inner‐transitional OFZ. The inner transitional
surface OFZ is a defined volume of airspace along the
sides of the runway and inner‐approach OFZ and
applies only to precision instrument runways. The
inner‐transitional surface OFZ slopes 3 (horizontal)
to 1 (vertical) out from the edges of the runway OFZ
and inner‐approach OFZ to a height of 150 feet above
the established airport elevation.
(Refer to AC 150/5300‐13, Chapter 3.)
(Refer to FAAO JO 7110.65, Para 3-1-5,
VEHICLES/EQUIPMENT/PERSONNEL ON
RUNWAYS.)
OBSTRUCTION- Any object/obstacle exceeding
the obstruction standards specified by 14 CFR
Part 77, Subpart C.
OBSTRUCTION LIGHT- A light or one of a group
of lights, usually red or white, frequently mounted on
a surface structure or natural terrain to warn pilots of
the presence of an obstruction.
OCEANIC AIRSPACE- Airspace over the oceans of
the world, considered international airspace, where
oceanic separation and procedures per the International
Civil Aviation Organization are applied.
Responsibility for the provisions of air traffic control
Pilot/Controller Glossary 2/14/08
PCG O-2
service in this airspace is delegated to various
countries, based generally upon geographic proximity
and the availability of the required resources.
OCEANIC DISPLAY AND PLANNING SYSTEM-
An automated digital display system which
provides flight data processing, conflict probe, and
situation display for oceanic air traffic control.
OCEANIC NAVIGATIONAL ERROR REPORT- A
report filed when an aircraft exiting oceanic airspace
has been observed by radar to be off course. ONER
reporting parameters and procedures are contained in
FAAO 7110.82, Monitoring of Navigational Performance
In Oceanic Areas.
OCEANIC PUBLISHED ROUTE- A route established
in international airspace and charted or
described in flight information publications, such as
Route Charts, DOD Enroute Charts, Chart Supplements,
NOTAMs, and Track Messages.
OCEANIC TRANSITION ROUTE- An ATS route
established for the purpose of transitioning aircraft
to/from an organized track system.
ODAPS-
(See OCEANIC DISPLAY AND PLANNING
SYSTEM.)
ODP-
(See OBSTACLE DEPARTURE PROCEDURE.)
OFF COURSE- A term used to describe a situation
where an aircraft has reported a position fix or is
observed on radar at a point not on the ATC‐approved
route of flight.
OFF‐ROUTE VECTOR- A vector by ATC which
takes an aircraft off a previously assigned route.
Altitudes assigned by ATC during such vectors
provide required obstacle clearance.
OFFSET PARALLEL RUNWAYS- Staggered
runways having centerlines which are parallel.
OFFSHORE/CONTROL AIRSPACE AREA- That
portion of airspace between the U.S. 12 NM limit and
the oceanic CTA/FIR boundary within which air
traffic control is exercised. These areas are
established to provide air traffic control services.
Offshore/Control Airspace Areas may be classified
as either Class A airspace or Class E airspace.
OFT-
(See OUTER FIX TIME.)
OM-
(See OUTER MARKER.)
OMEGA- An RNAV system designed for long‐range
navigation based upon ground‐based electronic
navigational aid signals.
ON COURSEa.
Used to indicate that an aircraft is established on
the route centerline.
b. Used by ATC to advise a pilot making a radar
approach that his/her aircraft is lined up on the final
approach course.
(See ON‐COURSE INDICATION.)
ON‐COURSE INDICATION- An indication on an
instrument, which provides the pilot a visual means
of determining that the aircraft is located on the
centerline of a given navigational track, or an
indication on a radar scope that an aircraft is on a
given track.
ONE‐MINUTE WEATHER- The most recent one
minute updated weather broadcast received by a pilot
from an uncontrolled airport ASOS/AWOS.
　
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