Source - Vi.potsdam.ny.us - Potsdam

FAR - Federal Aviation Regulations issued by the Federal Aviation Administration to implement the
agency's statutory authority.
FAR PART 36 - A regulation establishing noise certification standards for aircraft.
FAR PART 77 - A regulation establishing standards for determining obstructions to navigable
airspace.
FAR PART 139 - A regulation establishing standards for the operation of air taxi and commercial
operations of small aircraft.
FAR PART 150 - A regulation establishing criteria for noise assessment and procedures and criteria
for FAA approval of noise compatibility programs.
FBO - Fixed Based Operator. A retail firm that is authorized by agreement with the airport to
provide one or more of the following services at the airport: fueling; aircraft tie-down,
hangaring, and parking; aircraft, avionics and/or instrument sales and service; flight training; air
taxi service and charter flights; and aircraft exterior and/or interior modification.
FINAL APPROACH IFR - The flight path of an aircraft which is inbound to the airport on an
approved final instrument approach course, beginning at the point of interception of that course and
extending to the airport or the point where circling for landing or missed approach is executed.
FINAL APPROACH VFR - A flight path of landing aircraft in the direction of landing along the
extended runway centerline from the base leg to the runway.
FLEET MIX - The proportion of aircraft types or models expected to operate at an airport.
-G-
GENERAL AVIATION (GA) - Refers to all civil aircraft and operations which are not classified as
air carrier.
-H-
HGRS - Hangars.
HIRL - High Intensity Runway Lighting.
-I-
IMAGINARY SURFACE - An area established in relation to the airport and to each runway
consistent with FAR Part 77 in which any object extending above these imaginary surfaces is, by
definition, an obstruction.
INSTRUMENT APPROACH - An approach conducted while the final approach fix is below VFR
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