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Pilot/Controller Glossary

3/29/18

PCG A−2

e. Weather and chaff information.
f. Weather assistance.
g. Bird activity information.
h. Holding pattern surveillance. Additional ser-

vices are provided to the extent possible contingent

only upon the controller’s capability to fit them into

the performance of higher priority duties and on the

basis of limitations of the radar, volume of traffic,

frequency congestion, and controller workload. The

controller has complete discretion for determining if

he/she is able to provide or continue to provide a

service in a particular case. The controller’s reason

not to provide or continue to provide a service in a

particular case is not subject to question by the pilot

and need not be made known to him/her.

(See TRAFFIC ADVISORIES.)
(Refer to AIM.)

ADF−

(See AUTOMATIC DIRECTION FINDER.)

ADIZ−

(See AIR DEFENSE IDENTIFICATION ZONE.)

ADLY−

(See ARRIVAL DELAY.)

ADMINISTRATOR− The Federal Aviation Admin-

istrator or any person to whom he/she has delegated

his/her authority in the matter concerned.

ADR−

(See AIRPORT DEPARTURE RATE.)

ADS [ICAO]−

(See ICAO term AUTOMATIC DEPENDENT

SURVEILLANCE.)

ADS−B−

(See AUTOMATIC DEPENDENT

SURVEILLANCE−BROADCAST.)

ADS−C−

(See AUTOMATIC DEPENDENT

SURVEILLANCE−CONTRACT.)

ADVISE INTENTIONS− Tell me what you plan to

do.

ADVISORY− Advice and information provided to

assist pilots in the safe conduct of flight and aircraft

movement.

(See ADVISORY SERVICE.)

ADVISORY FREQUENCY− The appropriate fre-

quency to be used for Airport Advisory Service.

(See LOCAL AIRPORT ADVISORY.)
(See UNICOM.)
(Refer to ADVISORY CIRCULAR NO. 90-42.)
(Refer to AIM.)

ADVISORY SERVICE− Advice and information

provided by a facility to assist pilots in the safe

conduct of flight and aircraft movement.

(See ADDITIONAL SERVICES.)
(See LOCAL AIRPORT ADVISORY.)
(See RADAR ADVISORY.)
(See SAFETY ALERT.)
(See TRAFFIC ADVISORIES.)
(Refer to AIM.)

AERIAL REFUELING− A procedure used by the

military to transfer fuel from one aircraft to another

during flight.

(Refer to VFR/IFR Wall Planning Charts.)

AERODROME− A defined area on land or water

(including any buildings, installations and equip-

ment) intended to be used either wholly or in part for

the arrival, departure, and movement of aircraft.
AERODROME BEACON [ICAO]− Aeronautical

beacon used to indicate the location of an aerodrome

from the air.
AERODROME CONTROL SERVICE [ICAO]− Air

traffic control service for aerodrome traffic.
AERODROME CONTROL TOWER [ICAO]−  A

unit established to provide air traffic control service

to aerodrome traffic.
AERODROME ELEVATION [ICAO]− The eleva-

tion of the highest point of the landing area.
AERODROME TRAFFIC CIRCUIT [ICAO]− The

specified path to be flown by aircraft operating in the

vicinity of an aerodrome.
AERONAUTICAL BEACON− A visual NAVAID

displaying flashes of white and/or colored light to

indicate the location of an airport, a heliport, a

landmark, a certain point of a Federal airway in

mountainous terrain, or an obstruction.

(See AIRPORT ROTATING BEACON.)
(Refer to AIM.)

AERONAUTICAL CHART− A map used in air

navigation containing all or part of the following:

topographic features, hazards and obstructions,