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(See SEGMENTS OF AN INSTRUMENT
APPROACH PROCEDURE.)
FINAL APPROACH SEGMENT [ICAO]- That
segment of an instrument approach procedure in
which alignment and descent for landing are
accomplished.
FINAL CONTROLLER- The controller providing
information and final approach guidance during PAR
and ASR approaches utilizing radar equipment.
(See RADAR APPROACH.)
FINAL GUARD SERVICE- A value added service
provided in conjunction with LAA/RAA only during
periods of significant and fast changing weather
conditions that may affect landing and takeoff
operations.
FINAL MONITOR AID- A high resolution color
display that is equipped with the controller alert
system hardware/software which is used in the
precision runway monitor (PRM) system. The
display includes alert algorithms providing the target
predictors, a color change alert when a target
penetrates or is predicted to penetrate the no
transgression zone (NTZ), a color change alert if the
aircraft transponder becomes inoperative, synthesized
voice alerts, digital mapping, and like features
contained in the PRM system.
(See RADAR APPROACH.)
FINAL MONITOR CONTROLLER- Air Traffic
Control Specialist assigned to radar monitor the
flight path of aircraft during simultaneous parallel
and simultaneous close parallel ILS approach
operations. Each runway is assigned a final monitor
controller during simultaneous parallel and simultaneous
close parallel ILS approaches. Final monitor
controllers shall utilize the Precision Runway
Monitor (PRM) system during simultaneous close
parallel ILS approaches.
FIR-
(See FLIGHT INFORMATION REGION.)
FIRST TIER CENTER- The ARTCC immediately
adjacent to the impacted center.
FIX- A geographical position determined by visual
reference to the surface, by reference to one or more
radio NAVAIDs, by celestial plotting, or by another
navigational device.
FIX BALANCING- A process whereby aircraft are
evenly distributed over several available arrival fixes
reducing delays and controller workload.
FLAG- A warning device incorporated in certain
airborne navigation and flight instruments indicating
that:
a. Instruments are inoperative or otherwise not
operating satisfactorily, or
b. Signal strength or quality of the received signal
falls below acceptable values.
FLAG ALARM-
(See FLAG.)
FLAMEOUT- An emergency condition caused by a
loss of engine power.
FLAMEOUT PATTERN- An approach normally
conducted by a single‐engine military aircraft
experiencing loss or anticipating loss of engine
2/14/08 Pilot/Controller Glossary
PCG F-3
power or control. The standard overhead approach
starts at a relatively high altitude over a runway
(“high key”) followed by a continuous 180 degree
turn to a high, wide position (“low key”) followed by
a continuous 180 degree turn final. The standard
straight‐in pattern starts at a point that results in a
straight‐in approach with a high rate of descent to the
runway. Flameout approaches terminate in the type
approach requested by the pilot (normally fullstop).
FLIGHT CHECK- A call‐sign prefix used by FAA
aircraft engaged in flight inspection/certification of
navigational aids and flight procedures. The word
“recorded” may be added as a suffix; e.g., “Flight
Check 320 recorded” to indicate that an automated
flight inspection is in progress in terminal areas.
(See FLIGHT INSPECTION.)
(Refer to AIM.)
FLIGHT FOLLOWING-
(See TRAFFIC ADVISORIES.)
FLIGHT INFORMATION REGION- An airspace of
defined dimensions within which Flight Information
Service and Alerting Service are provided.
a. Flight Information Service. A service provided
for the purpose of giving advice and information
useful for the safe and efficient conduct of flights.
b. Alerting Service. A service provided to notify
appropriate organizations regarding aircraft in need
of search and rescue aid and to assist such
organizations as required.
FLIGHT INFORMATION SERVICE- A service
provided for the purpose of giving advice and
information useful for the safe and efficient conduct
of flights.
FLIGHT INSPECTION- Inflight investigation and
evaluation of a navigational aid to determine whether
it meets established tolerances.
(See FLIGHT CHECK.)
(See NAVIGATIONAL AID.)
FLIGHT LEVEL- A level of constant atmospheric
pressure related to a reference datum of 29.92 inches
of mercury. Each is stated in three digits that represent
hundreds of feet. For example, flight level (FL) 250
　
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