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SERVICE.)
TPX‐42- A numeric beacon decoder equipment/
system. It is designed to be added to terminal radar
systems for beacon decoding. It provides rapid target
identification, reinforcement of the primary radar
target, and altitude information from Mode C.
(See AUTOMATED RADAR TERMINAL
SYSTEMS.)
(See TRANSPONDER.)
TRACEABLE PRESSURE STANDARD- The
facility station pressure instrument, with certification/
calibration traceable to the National Institute of
Standards and Technology. Traceable pressure
standards may be mercurial barometers, commissioned
ASOS or dual transducer AWOS, or portable
pressure standards or DASI.
TRACK- The actual flight path of an aircraft over the
surface of the earth.
(See COURSE.)
(See FLIGHT PATH.)
(See ROUTE.)
(See ICAO term TRACK.)
TRACK [ICAO]- The projection on the earth's
surface of the path of an aircraft, the direction of
which path at any point is usually expressed in
degrees from North (True, Magnetic, or Grid).
TRAFFICa.
A term used by a controller to transfer radar
identification of an aircraft to another controller for
the purpose of coordinating separation action. Traffic
is normally issued:
1. In response to a handoff or point out,
2. In anticipation of a handoff or point out, or
3. In conjunction with a request for control of an
aircraft.
b. A term used by ATC to refer to one or more
aircraft.
TRAFFIC ADVISORIES- Advisories issued to alert
pilots to other known or observed air traffic which
may be in such proximity to the position or intended
route of flight of their aircraft to warrant their
attention. Such advisories may be based on:
a. Visual observation.
2/14/08 Pilot/Controller Glossary
PCG T-5
b. Observation of radar identified and nonidentified
aircraft targets on an ATC radar display, or
c. Verbal reports from pilots or other facilities.
Note 1:The word “traffic” followed by additional
information, if known, is used to provide such
advisories; e.g., “Traffic, 2 o'clock, one zero miles,
southbound, eight thousand.”
Note 2:Traffic advisory service will be provided to
the extent possible depending on higher priority
duties of the controller or other limitations; e.g.,
radar limitations, volume of traffic, frequency
congestion, or controller workload. Radar/
nonradar traffic advisories do not relieve the pilot
of his/her responsibility to see and avoid other
aircraft. Pilots are cautioned that there are many
times when the controller is not able to give traffic
advisories concerning all traffic in the aircraft's
proximity; in other words, when a pilot requests or
is receiving traffic advisories, he/she should not
assume that all traffic will be issued.
(Refer to AIM.)
TRAFFIC ALERT (aircraft call sign), TURN
(left/right) IMMEDIATELY, (climb/descend) AND
MAINTAIN (altitude).
(See SAFETY ALERT.)
TRAFFIC ALERT AND COLLISION AVOIDANCE
SYSTEM- An airborne collision avoidance
system based on radar beacon signals which operates
independent of ground‐based equipment. TCAS‐I
generates traffic advisories only. TCAS‐II generates
traffic advisories, and resolution (collision avoidance)
advisories in the vertical plane.
TRAFFIC INFORMATION-
(See TRAFFIC ADVISORIES.)
TRAFFIC IN SIGHT- Used by pilots to inform a
controller that previously issued traffic is in sight.
(See NEGATIVE CONTACT.)
(See TRAFFIC ADVISORIES.)
TRAFFIC MANAGEMENT ADVISOR (TMA)- A
computerized tool which assists Traffic Management
Coordinators to efficiently schedule arrival traffic to
a metered airport, by calculating meter fix times and
delays then sending that information to the sector
controllers.
TRAFFIC MANAGEMENT PROGRAM ALERTA
term used in a Notice to Airmen (NOTAM) issued
in conjunction with a special traffic management
program to alert pilots to the existence of the program
and to refer them to either the Notices to Airmen
publication or a special traffic management program
advisory message for program details. The contraction
TMPA is used in NOTAM text.
TRAFFIC MANAGEMENT UNIT- The entity in
ARTCCs and designated terminals directly involved
in the active management of facility traffic. Usually
under the direct supervision of an assistant manager
for traffic management.
TRAFFIC NO FACTOR- Indicates that the traffic
described in a previously issued traffic advisory is no
factor.
TRAFFIC NO LONGER OBSERVED- Indicates
that the traffic described in a previously issued traffic
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