(2)
At the point of interception of the last track specified in the approach procedure; and ends at a point in the vicinity of an aerodrome from which a landing can be made, or a missed approach is initiated.
FINAL APPROACH POINT/FAP - The point, applicable only to a nonprecision approach with no depicted Final Approach Fix (such as an on-airport VOR), where the aircraft is established inbound on the final approach course from the procedure turn and where the final approach descent may be commenced. The FAP serves as the Final Approach Fix and identifies the beginning of the final approach segment. (See Final Approach Fix, Segments of an Instrument Approach Procedure).
FINAL APPROACH SEGMENT - (See Segments of an Instrument Approach Procedure)
FINAL APPROACH-VFR - (See Traffic Pattern)
FINAL CONTROLLER - The controller providing information and final approach guidance during Precision Approach Radar and Airport Surveillance Radar approached utilizing radar equipment. (See Radar Approach)
FIX (P/CG) - A geographical position determined by a visual reference to the surface, by reference to one or more radio navigation aids, by celestial plotting, or by another navigation device.
FIX (JCS, NATO) - A position determined from terrestrial, electronic, or astronomical data.
FLAG/FLAG ALARM - A warning device incorporated in certain airborne navigation and flight instruments indicating that:
(1)
Instruments are inoperative or otherwise not operating satisfactorily, or
(2)
Signal strength or quality of the received signal falls below acceptable values.
FLAMEOUT - Unintended loss of combustion in turbine engines resulting in the loss of engine power.
FLEET SERVICE (USAF) - Sanitation and disposal service for aircraft.
FLIGHT CHECK - A call-sign prefix used by Federal Aviation Administration 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. (Flight Inspection/Flight Check)
FLIGHT FOLLOWING - (See Traffic Advisories)
FLIGHT INFORMATION CENTER/FIC (JCS, NATO, ICAO) - A unit establish to provide Flight Information Service and Alerting Service.
FLIGHT INFORMATION REGION/FIR (P/CG, JCS, NATO, ICAO) - An airspace of defined dimensions within which Flight Information Service and Alerting Service are provided.
(1) FLIGHT INFORMATION SERVICE - A service provided for the purpose of giving advice and information useful for the safe and efficient conduct of flights.
(2) ALERTING SERVICE - A service provided to notify appropriate organizations regarding aircraft in need of Search And Rescue aid, and assist such organizations as required.
FLIGHT INSPECTION-FLIGHT CHECK - Inflight investigation and evaluation of a navigational aid to determine whether it meets established tolerances. (See Navigational Aid)
FLIGHT LEVEL (P/CG) - 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 250 represents a barometric altimeter indication of 25,000 feet; Flight Level 255, an indication of 25,500 feet.
FLIGHT LEVELS (JCS, NATO, ICAO) - Surfaces of constant atmospheric pressure which are related to a specific pressure datum. 1013.2 millibars (29.92 inches) and are separated by specific pressure intervals.
NOTE 1. - A pressure type altimeter calibrated in accordance with the standard atmosphere:
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