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Pilot/Controller Glossary

ACTUAL NAVIGATION PERFORMANCE (ANP)

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(See REQUIRED NAVIGATION PERFORMANCE.)

ADAPTED ROUTES

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 Departure and/or arrival routes that are adapted in
ARTCC ERAM computers to

accomplish inter/intrafacility controller coordination and to ensure
that flight data is posted at the proper control

positions. Adapted routes are automatically applied to flight plans
where appropriate. When the workload or

traffic situation permits, controllers may provide radar vectors or
assign requested routes to minimize circuitous

routing. Adapted routes are usually confined to one ARTCC's arend
are referred to by the following names

or abbreviations:

a.

Adapted Arrival Route (AAR). A specific arrival route from an
appropriate en route point to an airport or

terminal area. A Standard Terminal Arrival (STAR) and/or a partial
Preferred IFR Route may be included in an

AAR.

b.

Adapted Departure Route (ADR). A specific departure route from an
airport or terminal area to an en route

point where there is no further need for flow control. An Instrument
Departure Procedure (DP) and/or a partial

Preferred IFR Route may be included in an ADR.

c.

Adapted Departure and Arrival Route (ADAR). A route between two
terminals which are within or

immediately adjacent to one ARTCC's area. ADARs are similar to
Preferred IFR Routes and may share

components, but they are not synonymous.

(See PREFFERED IFR ROUTES.)

ADAR

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(See ADAPTED ROUTES.)

ADDITIONAL SERVICES

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Advisory information provided by ATC which includes but is not limited
to the

following:

a.

Traffic advisories.

b.

Vectors, when requested by the pilot, to assist aircraft receiving
traffic advisories to avoid observed traffic.

c.

Altitude deviation information of 300 feet or more from an assigned
altitude as observed on a verified

(reading correctly) automatic altitude readout (Mode C).

d.

Advisories that traffic is no longer a factor.

e.

Weather and chaff information.

f.

Weather assistance.

g.

Bird activity information.

h.

Holding pattern surveillance. Additional services 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

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(See AUTOMATIC DIRECTION FINDER.)

ADIZ

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(See AIR DEFENSE IDENTIFICATION ZONE.)

ADLY

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(See ARRIVAL DELAY.)

ADMINISTRATOR

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 The Federal Aviation Administrator or any person to whom he/she has
delegated his/her

authority in the matter concerned.

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