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Pilot/Controller Glossary

3/29/18

PCG O−2

service in this airspace is delegated to various

countries, based generally upon geographic proxim-

ity and the availability of the required resources.

OCEANIC ERROR REPORT− A report filed when

ATC observes an Oceanic Error as defined by FAA

Order 7110.82, Reporting Oceanic Errors.

OCEANIC PUBLISHED ROUTE− A route estab-

lished in international airspace and charted or

described in flight information publications, such as

Route Charts, DOD En route 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.

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.)

ON COURSE−

a. 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/AWSS/AWOS.
ONER−

(See OCEANIC NAVIGATIONAL ERROR

REPORT.)

OPERATIONAL−

(See DUE REGARD.)

OPERATIONS SPECIFICATIONS [ICAO]− The

authorizations, conditions and limitations associated

with the air operator certificate and subject to the

conditions in the operations manual.
OPPOSITE DIRECTION AIRCRAFT− Aircraft are

operating in opposite directions when:

a. They are following the same track in reciprocal

directions; or

b. Their tracks are parallel and the aircraft are

flying in reciprocal directions; or

c. Their tracks intersect at an angle of more than

135

_.

OPTION APPROACH− An approach requested and

conducted by a pilot which will result in either a

touch-and-go, missed approach, low approach,

stop-and-go, or full stop landing. Pilots should advise

ATC if they decide to remain on the runway, of any

delay in their stop and go, delay clearing the runway,

or are unable to comply with the instruction(s).

(See CLEARED FOR THE OPTION.)
(Refer to AIM.)

ORGANIZED TRACK SYSTEM− A series of ATS

routes which are fixed and charted; i.e., CEP,

NOPAC, or flexible and described by NOTAM; i.e.,

NAT TRACK MESSAGE.