Pilot/Controller Glossary

4/20/23

PCG A

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SURVEILLANCE

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BROADCAST.)

c. WAM (See WIDE AREA MULTILATERATION.)

(See INTERROGATOR.)
(See TRANSPONDER.)
(See ICAO term RADAR.)
(Refer to AIM.)

ATS SURVEILLANCE SYSTEM [ICAO]– A generic term meaning variously, ADS

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B, PSR, SSR or any

comparable ground

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based system that enables the identification of aircraft.

Note: A comparable ground

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based system is one that has been demonstrated, by comparative assessment

or other methodology, to have a level of safety and performance equal to or better than monopulse SSR.

ATCAA

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(See ATC ASSIGNED AIRSPACE.)

ATCRBS

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(See RADAR.)

ATCSCC

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(See AIR TRAFFIC CONTROL SYSTEM COMMAND CENTER.)

ATCT

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(See TOWER.)

ATD

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(See ALONG

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TRACK DISTANCE.)

ATIS

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(See AUTOMATIC TERMINAL INFORMATION SERVICE.)

ATIS [ICAO]

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(See ICAO Term AUTOMATIC TERMINAL INFORMATION SERVICE.)

ATO

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(See AIR TRAFFIC ORGANIZATION.)

ATPA

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(See AUTOMATED TERMINAL PROXIMITY ALERT.)

ATS ROUTE [ICAO]

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 A specified route designed for channeling the flow of traffic as necessary for the provision

of air traffic services.

Note: The term “ATS Route” is used to mean variously, airway, advisory route, controlled or uncontrolled route,

arrival or departure, etc.

ATTENTION ALL USERS PAGE (AAUP)- The AAUP provides the pilot with additional information relative
to conducting a specific operation, for example, PRM approaches and RNAV departures.

AUTOLAND APPROACH

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An autoland system aids by providing control of aircraft systems during a precision

instrument approach to at least decision altitude and possibly all the way to touchdown, as well as in some cases,
through the landing rollout. The autoland system is a sub-system of the autopilot system from which control
surface management occurs. The aircraft autopilot sends instructions to the autoland system and monitors the
autoland system performance and integrity during its execution.

AUTOMATED EMERGENCY DESCENT

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(See EMERGENCY DESCENT MODE.)

AUTOMATED INFORMATION TRANSFER (AIT)

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 A precoordinated process, specifically defined in facility

directives, during which a transfer of altitude control and/or radar identification is accomplished without verbal
coordination between controllers using information communicated in a full data block.