12/2/21
Pilot/Controller Glossary
through the assignment of time at specific points for
an aircraft. TBM applies time to manage and
condition air traffic flows to mitigate
demand/capacity imbalances and enhance efficiency
and predictability of the NAS. Where implemented,
TBM tools will be used to manage traffic even during
periods when demand does not exceed capacity. This
will sustain operational predictability and assure the
regional/national strategic plan is maintained. TBM
uses capabilities within TFMS, TBFM, and TFDM.
These programs are designed to achieve a specified
interval between aircraft. Different types of programs
accommodate different phases of flight.
TIME GROUP
−
Four digits representing the hour
and minutes from the Coordinated Universal Time
(UTC) clock. FAA uses UTC for all operations. The
term “ZULU” may be used to denote UTC. The word
“local” or the time zone equivalent shall be used to
denote local when local time is given during radio and
telephone communications. When written, a time
zone designator is used to indicate local time; e.g.,
“0205M” (Mountain). The local time may be based
on the 24-hour clock system. The day begins at 0000
and ends at 2359.
TIMELINE GRAPHICAL USER INTERFACE
(TGUI)
−
A TBFM display that uses timelines to
display the Estimated Time of Arrival and Scheduled
Time of Arrival of each aircraft to specified constraint
points. The TGUI can also display pre
−
departure and
scheduled aircraft.
TIS
−
B
−
(See TRAFFIC INFORMATION
SERVICE
−
BROADCAST.)
TMI
−
(See TRAFFIC MANAGEMENT INITIATIVE.)
TMPA
−
(See TRAFFIC MANAGEMENT PROGRAM
ALERT.)
TMU
−
(See TRAFFIC MANAGEMENT UNIT.)
TOD
−
(See TOP OF DESCENT.)
TODA
−
(See TAKEOFF DISTANCE AVAILABLE.)
(See ICAO term TAKEOFF DISTANCE
AVAILABLE.)
TOI
−
(See TRACK OF INTEREST.)
TOP ALTITUDE
−
In reference to SID published
altitude restrictions, the charted
“
maintain” altitude
contained in the procedure description or assigned by
ATC.
TOP OF DESCENT (TOD)
−
The point at which an
aircraft begins the initial descent.
TORA
−
(See TAKEOFF RUN AVAILABLE.)
(See ICAO term TAKEOFF RUN AVAILABLE.)
TORCHING
−
The burning of fuel at the end of an
exhaust pipe or stack of a reciprocating aircraft
engine, the result of an excessive richness in the fuel
air mixture.
TOS
−
(See TRAJECTORY OPTIONS SET)
TOTAL ESTIMATED ELAPSED TIME [ICAO]
−
For IFR flights, the estimated time required from
takeoff to arrive over that designated point, defined
by reference to navigation aids, from which it is
intended that an instrument approach procedure will
be commenced, or, if no navigation aid is associated
with the destination aerodrome, to arrive over the
destination aerodrome. For VFR flights, the
estimated time required from takeoff to arrive over
the destination aerodrome.
(See ICAO term ESTIMATED ELAPSED TIME.)
TOUCH-AND-GO
−
An operation by an aircraft that
lands and departs on a runway without stopping or
exiting the runway.
TOUCH-AND-GO LANDING
−
(See TOUCH-AND-GO.)
TOUCHDOWN
−
a.
The point at which an aircraft first makes
contact with the landing surface.
b.
Concerning a precision radar approach (PAR),
it is the point where the glide path intercepts the
landing surface.
(See ICAO term TOUCHDOWN.)
TOUCHDOWN [ICAO]
−
The point where the
nominal glide path intercepts the runway.
Note: Touchdown as defined above is only a datum
and is not necessarily the actual point at which the
aircraft will touch the runway.
PCG T
−
5