Pilot/Controller Glossary

PVD/MDM of the sector which controls the meter
fix.
ARRIVAL SEQUENCING PROGRAM- The automated program designed to assist in sequencing
aircraft destined for the same airport.
ARRIVAL TIME- The time an aircraft touches down
on arrival.
ARSR-
(See AIR ROUTE SURVEILLANCE RADAR.)

ARTCC-
(See AIR ROUTE TRAFFIC CONTROL
CENTER.)

ARTS-
(See AUTOMATED RADAR TERMINAL
SYSTEMS.)

ASDA-
(See ACCELERATE-STOP DISTANCE
AVAILABLE.)

ASDA [ICAO]-
(See ICAO Term ACCELERATE-STOP
DISTANCE AVAILABLE.)

ASDE-
(See AIRPORT SURFACE DETECTION
EQUIPMENT.)

ASF-
(See AIRPORT STREAM FILTER.)

ASLAR-
(See AIRCRAFT SURGE LAUNCH AND
RECOVERY.)

ASP-
(See ARRIVAL SEQUENCING PROGRAM.)

ASR-
(See AIRPORT SURVEILLANCE RADAR.)

ASR APPROACH-
(See SURVEILLANCE APPROACH.)

ASSOCIATED- A radar target displaying a data
block with flight identification and altitude
information.
(See UNASSOCIATED.)

ATC-
(See AIR TRAFFIC CONTROL.)

ATC ADVISES- Used to prefix a message of
noncontrol information when it is relayed to an
aircraft by other than an air traffic controller.
(See ADVISORY.)

ATC ASSIGNED AIRSPACE- Airspace of defined
vertical/lateral limits, assigned by ATC, for the
purpose of providing air traffic segregation between
the specified activities being conducted within the
assigned airspace and other IFR air traffic.
(See SPECIAL USE AIRSPACE.)

ATC CLEARANCE-
(See AIR TRAFFIC CLEARANCE.)

ATC CLEARS- Used to prefix an ATC clearance
when it is relayed to an aircraft by other than an air
traffic controller.
ATC INSTRUCTIONS- Directives issued by air
traffic control for the purpose of requiring a pilot to
take specific actions; e.g., "Turn left heading two five
zero," "Go around," "Clear the runway."
(Refer to 14 CFR Part 91.)

ATC PREFERRED ROUTE NOTIFICATION-
EDST notification to the appropriate controller of the
need to determine if an ATC preferred route needs to
be applied, based on destination airport.
(See ROUTE ACTION NOTIFICATION.)
(See EN ROUTE DECISION SUPPORT TOOL.)

ATC PREFERRED ROUTES- Preferred routes that
are not automatically applied by Host.
ATC REQUESTS- Used to prefix an ATC request
when it is relayed to an aircraft by other than an air
traffic controller.
ATC SECURITY SERVICES- Communications
and security tracking provided by an ATC facility in
support of the DHS, the DOD, or other Federal
security elements in the interest of national security.
Such security services are only applicable within
designated areas. ATC security services do not
include ATC basic radar services or flight following.
ATC SECURITY SERVICES POSITION- The
position responsible for providing ATC security
services as defined. This position does not provide
ATC, IFR separation, or VFR flight following
services, but is responsible for providing security
services in an area comprising airspace assigned to
one or more ATC operating sectors. This position
may be combined with control positions.
ATC SECURITY TRACKING- The continuous
tracking of aircraft movement by an ATC facility in