Aviation Maintenance Terms beginning with T
TACAN
Ultra-high frequency tactical air navigational aid.
TAS
True airspeed.
TCAS
A traffic alert and collision avoidance system.
TCAS I
A TCAS that utilizes interrogations of, and replies from, airborne radar beacon transponders and provides traffic advisories to the pilot.
TCAS II
A TCAS that utilizes interrogations of, and replies from airborne radar beacon transponders and provides traffic advisories and resolution advisories in the vertical plane.
TCAS III
A TCAS that utilizes interrogation of, and replies from, airborne radar beacon transponders and provides traffic advisories and resolution advisories in the vertical and horizontal planes to the pilot.
TSO
Technical standard order.
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