(2) Servo Actuator
Super- A receiver in which the incoming RF signal is mixed
heterodyne to produce a lower intermediate frequency.
Receiver
Suppressor A pulse used to disable L-band avionics during the
Pulse transmitting period of another piece of L-band air
borne equipment. It prevents the other avionics
aboard the aircraft from being damaged or interfered
with by the transmission and any noise associated
with that transmission.
SUT (1) Autothrottle Servo
(2) Stabilizer Trim Servo
SV Space Vehicle
SVC Service
SVO Servo
SVT Servo Throttle
SVU Satellite Voice Unit
S/W Software
sys System
T
TA Traffic Advisory
TAC (1) Test Access Control
(2) Thrust Assymetry Compensation
TACAN Tactical Air Navigation System Provides azimuth and
distance information to an aircraft from a fixed
ground station (as opposed to DME providing only
distance information).
Tach Tachometer
TACIU Test Access Control Interface Unit
TAG AEEC Technical Advisory Group
TAI Thermal Anti-Icing
Target An aircraft within the surveillance range of TCAS.
TAS True Airspeed
TAT (1) Total Air Temperature. The air temperature includ-
ing heat rise due to compressibility.
(2) True Air Temperature
TATCA Terminal Air Traffic Control Automation
TAU TAU is the minimum time a flight crew needs to dis-
cern a collision threat and take evasive action. It rep-
resents the performance envelope (speed and path of
aircraft) divided by the closure rate of any intruder
aircraft (TCAS).
72
TBB Transfer Bus Breaker
TBD To Be Determined
TBS To Be Supplied
TC Type Certificate
TCA Terminal Control Area
TCAS Traffic Alert Collision Avoidance System
TCAS I A baseline system that provides a warning (TA) to the flight crew of the presence of another aircraft (poten-tial collision threat) within the surveillance area. No avoidance maneuver is suggested.
TCAS II A collision avoidance system providing traffic infor-mation (within approximately 30 nmi of the aircraft) to the flight crew, in addition to the resolution advi-sories (RA) (for vertical maneuvers only). A TCAS II-equipped aircraft will coordinate with TCAS II-equipped intruder aircraft to provide complementary maneuvers.
TCC Turbine Case Cooling
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