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a powered aircraft comprised of a flexible or semi-rigid wing connected to a fuselage so that the wing is not in position for flight until the aircraft is in motion.
a heavier-than-air aircraft capable of vertical takeoff, vertical landing, and low speed flight that depends principally on engine-driven lift devices or engine thrust for lift during these flight regimes and on nonrotating airfoil(s) for lift during horizontal flight.
Precision approach procedure
a standard instrument approach procedure in which an electronic glide slope is provided, such as ILS and PAR.
simple or minor preservation operations and the replacement of small standard parts not involving complex assembly operations.
airspace designated under part 73 within which no person may operate an aircraft without the permission of the using agency.
a device that has blades on an engine-driven shaft and that, when rotated, produces by its action on the air, a thrust approximately perpendicular to its plane of rotation. It includes control components normally supplied by its manufacturer, but does not include main and auxiliary rotors or rotating airfoils of engines.
a statement that, as a part of a certificate, sets forth special conditions, privileges, or limitations.
Reference landing speed
the speed of the airplane, in a specified landing configuration, at the point where it descends through the 50 foot height in the determination of the landing distance.
a geographical location in relation to which the position of an aircraft is reported.
airspace designated under Part 73 within which the flight of aircraft, while not wholly prohibited, is subject to restriction.
an aircraft propelled by ejected expanding gases generated in the engine from self-contained propellants and not dependent on the intake of outside substances. It includes any part which becomes separated during the operation.
a heavier-than-air aircraft that depends principally for its support in flight on the lift generated by one or more rotors.
means the combination of a rotorcraft and an external-load, including the external-load attaching means.
a portion of a route bounded on each end by a fix or navigation aid (NAVAID).
Sea level engine
a reciprocating aircraft engine having a rated takeoff power that is producible only at sea level.
Second in command
a pilot who is designated to be second in command of an aircraft during flight time.
display to the satisfaction of the Administrator.
aircraft of 12,500 pounds or less, maximum certificated takeoff weight.
Special VFR conditions
meteorological conditions that are less than those required for basic VFR flight in controlled airspace and in which some aircraft are permitted flight under visual flight rules.
Special VFR operations
aircraft operating in accordance with clearances within controlled airspace in meteorological conditions less than the basic VFR weather minima. Such operations must be requested by the pilot and approved by ATC.
the atmosphere defined in U.S. Standard Atmosphere, 1962 (Geopotential altitude tables).
an area beyond the takeoff runway, no less wide than the runway and centered upon the extended centerline of the runway, able to support the airplane during an aborted takeoff, without causing structural damage to the airplane, and designated by the airport authorities for use in decelerating the airplane during an aborted takeoff.
a computer-generated image of the external scene topography from the perspective of the flight deck that is derived from aircraft attitude, high-precision navigation solution, and database of terrain, obstacles and relevant cultural features.
Synthetic vision system
an electronic means to display a synthetic vision image of the external scene topography to the flight crew.
Takeoff power for reciprocating engines
the brake horsepower that is developed under standard sea level conditions, and under the maximum conditions of crankshaft rotational speed and engine manifold pressure approved for the normal takeoff, and limited in continuous use to the period of time shown in the approved engine specification
Takeoff power for turbine engines
the brake horsepower that is developed under static conditions at a specified altitude and atmospheric temperature, and under the maximum conditions of rotor shaft rotational speed and gas temperature approved for the normal takeoff, and limited in continuous use to the period of time shown in the approved engine specification.
Takeoff safety speed
a referenced airspeed obtained after lift-off at which the required one-engine-inoperative climb performance can be achieved.
Takeoff thrust, with respect to turbine engines
the jet thrust that is developed under static conditions at a specific altitude and atmospheric temperature under the maximum conditions of rotorshaft rotational speed and gas temperature approved for the normal takeoff, and limited in continuous use to the period of time shown in the approved engine specification.
Tandem wing configuration
a configuration having two wings of similar span, mounted in tandem.
traffic collision avoidance system
Time in service, with respect to maintenance time records
the time from the moment an aircraft leaves the surface of the earth until it touches it at the next point of landing.
the traffic flow that is prescribed for aircraft landing at, taxiing on, or taking off from, an airport.
the airspeed of an aircraft relative to undisturbed air. Equal to equivalent airspeed multiplied by (ρ0/ρ)1/2.
Type for aircraft engines
those engines which are similar in design.
Type for aircraft
those aircraft which are similar in design.
Type for airmen
a specific make and basic model of aircraft, including modifications thereto that do not change its handling or flight characteristics.
United States, in a geographical sense
(1) the States, the District of Columbia, Puerto Rico, and the possessions, including the territorial waters, and (2) the airspace of those areas.
the operation of an aircraft over-the-top under VFR when it is not being operated on an IFR flight plan.
airspace of defined dimensions, extending from 3 nautical miles outward from the coast of the United States, that contains activity that may be hazardous to nonparticipating aircraft. The purpose of such warning areas is to warn nonparticipating pilots of the potential danger. A warning area may be located over domestic or international waters or both.
a powered aircraft with a framed pivoting wing and a fuselage controllable only in pitch and roll by the pilot's ability to change the aircraft's center of gravity with respect to the wing. Flight control of the aircraft depends on the wing's ability to flexibly deform rather than the use of control surfaces.
Winglet or tip fin
an out-of-plane surface extending from a lifting surface. The surface may or may not have control surfaces.