Pilot/Controller Glossary 

4/20/23 

TARGET [ICAO]

−

 In radar: 

a. 

Generally, any discrete object which reflects or retransmits energy back to the radar equipment. 

b. 

Specifically, an object of radar search or surveillance. 

TARGET RESOLUTION

−

 A process to ensure that correlated radar targets do not touch. Target resolution must 

be applied as follows: 

a. 

Between the edges of two primary targets or the edges of the ASR-9/11 primary target symbol. 

b. 

Between the end of the beacon control slash and the edge of a primary target. 

c. 

Between the ends of two beacon control slashes. 

Note 1: Mandatory traffic advisories and safety alerts must be issued when this procedure is used. 
Note 2: This procedure must not be used when utilizing mosaic radar systems or multi

−

sensor mode. 

TARGET SYMBOL

−

 

(See TARGET.) 
(See ICAO term TARGET.) 

TARMAC DELAY

−

 The holding of an aircraft on the ground either before departure or after landing with no 

opportunity for its passengers to deplane. 
TARMAC DELAY AIRCRAFT

−

 An aircraft whose pilot

−

in

−

command has requested to taxi to the ramp, gate, 

or alternate deplaning area to comply with the Three

−

hour Tarmac Rule. 

TARMAC DELAY REQUEST

−

 A request by the pilot

−

in

−

command to taxi to the ramp, gate, or alternate 

deplaning location to comply with the Three

−

hour Tarmac Rule. 

TAS

−

 

(See TERMINAL AUTOMATION SYSTEMS.) 

TAWS

−

 

(See TERRAIN AWARENESS WARNING SYSTEM.) 

TAXI

−

 The movement of an airplane under its own power on the surface of an airport (14 CFR 

Section 135.100 [Note]). Also, it describes the surface movement of helicopters equipped with wheels. 

(See AIR TAXI.) 
(See HOVER TAXI.) 
(Refer to 14 CFR Section 135.100.) 
(Refer to AIM.) 

TAXI PATTERNS

−

 Patterns established to illustrate the desired flow of ground traffic for the different runways 

or airport areas available for use. 
TBM

−

 

(See TIME

−

BASED MANAGEMENT.) 

TBO

−

 

(See TRAJECTORY

−

BASED OPERATIONS.) 

TCAS

−

 

(See TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM.) 

TCH

−

 

(See THRESHOLD CROSSING HEIGHT.) 

TDLS

−

 

(See 

TERMINAL DATA LINK SYSTEM

.) 

TDZE

−

 

(See TOUCHDOWN ZONE ELEVATION.) 

PCG T

−

2