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:
|
