Tactical Air Navigation. It is a system that provides the user with bearing and distance (slant-range) to a ground or ship-borne station.

Terminal Aerodrome Forecast or, in some countries, Terminal Area Forecast. In meteorology and aviation, TAF is a format for reporting weather forecast information, particularly as it relates to aviation. Generally a TAF is a 9- or 12-hour forecast, though some TAFs can cover an 18- or 24-hour period.

The aircraft registration. It is a unique alphanumeric string that identifies a civil aircraft, in similar fashion to a license plate on an automobile. In accordance with the Convention on International Civil Aviation, all aircraft must be registered with a national authority (such as the FAA). Also referred to as N-Numbers in the United States.

A wind which is blowing in the same direction as the direction of movement or flight.

The weight of an aircraft as it takes off part way along a runway. Few flight planning systems calculate the actual take-off weight; instead, the fuel used for taking off is counted as part of the fuel used for climbing up to the normal cruise height.

A British name for a hard-surfaced area on an airport. The term is derived from "tar macadam", a mixture of tar and crushed stone often used as the surfacing material.

To move slowly on the ground or on the surface of the water before takeoff or after landing.

Is the time the charter aircraft is in transit to the runway up to the point of take off.

A path on an airport connecting runways with ramps, hangars, terminals and other facilities. They mostly have hard surface such as asphalt or concrete, although smaller airports sometimes use gravel or grass.

Total Flight Cycles

Total Flight Hours

Temporary Flight Restrictions

The vertical dimension of a wing. (Compare with span and chord.)

Refers to the verification of safety, maintenance and operations by an independent auditor. There are three main companies that fill this role for air charter; they are WYVERN, ARG/US, and Q-Star.

The beginning of the part of the runway usable for landing.

Thrust is the force upon a system (such as a rocket or jet engine) generated when that system expels or accelerates mass. It is the driving force of a propeller in the line of its shaft, or the forward force produced in reaction to the gasses expelled rearward from a jet engine. The resultant thrust force is equal to and in the opposite direction of the expelled mass. One of the forces of flight- opposite of Drag.

The method and means of reducing the landing run of an aircraft without excessive use of wheel brakes or any use of braking or tail parachutes. It is a temporary diversion of an aircraft engine's exhaust or changing of propeller pitch so that the thrust produced is directed forward, rather than aft. This acts against the forward travel of the aircraft, providing deceleration. Also called reverse thrust.

A device placed in the tailpipe of a turbojet engine to deflect some of the exhaust gases forward to produce a rearward thrust. This helps decrease the landing roll. Thrust reversers are used by many jet aircraft to help slow down just after touch-down, reducing wear on the brakes and enabling shorter landing distances.

The first 3000 feet of the runway or the first third of the runway, whichever is less, measured from the threshold.

The path on the ground over which an aircraft has flown. Also used synonymously with course, the direction in which an aircraft is moving relative to the ground. Note that this is not necessarily the same as the aircraft's heading.

Terminal Radar Approach Control (or FAA TRACON in the United States) is an Air Traffic Control facility usually located within the vicinity of a large airport. Typically, the TRACON controls aircraft within a 30-50 nautical mile (56 to 93 km) radius of the airport between the surface and 18,000 feet. A TRACON is sometimes called Approach Control or Departure Control in radio transmissions.

Information given by ATC on the position and, if known, intentions of other aircraft likely to pose a hazard to flight.

The flight of an aircraft, whether fixed-wing aircraft, balloon or other device, which involves crossing the Atlantic Ocean — with a starting point in North America or South America and ending in Europe or Africa, or vice versa. Find private jets available for Trans Atlantic charter flights on the Empty Legs and Transient Aircraft pages of JetRequest.com.

The flight of an aircraft, whether fixed-wing aircraft, balloon or other device, which involves crossing the Pacific Ocean — with a starting point in North America or South America and ending in the Asia-Pacific region including Australia, or vice versa. Find private jets available for Trans Pacific charter flights on the Empty Legs and Transient Aircraft pages of JetRequest.com.

An aircraft that is temporarily on the ground at an airport other than its home base and is not being used. The aircraft is usually transient because it makes more financial sense to leave it at that airport until the return flight. Transient aircraft are typically away from home base for 2 to 5 days and can be available for charter at discounted prices. Find private jets available for charter flights on the Transient Aircraft page of JetRequest.com.

A device used to determine visibility by measuring the transmission of light through the atmosphere.

Flight in which an airplane transitions from subsonic speed to a speed at or beyond the speed of sound - considered to be 600-900 miles per hour, or Mach 0.8-1.2.

To adjust the aerodynamic forces on the control surfaces so that the aircraft maintains the set attitude without any control input. Also, the condition in which an aircraft is in static balance in pitch.

A small tab attached to a flight control surface, that when properly adjusted, relieves pressure on the flight controls.

An aeroplane with three similar-sized wings (or pairs of wings), exactly or approximately in vertical alignment.

The speed of an aircraft relative to undisturbed air. Takes wind out of the picture.

The elevation above sea level.

Any of various machines in which the kinetic energy of a moving fluid, such as water, steam, or gas, is converted to rotary motion. Turbines are used in boat propulsion systems, hydroelectric power generators, and jet aircraft engines.

An aircraft in which a turbine is used to power the engine.

A jet engine having a turbine-driven compressor and developing thrust from the exhaust of hot gases. Also, an aircraft in which a turbojet is used.

Use of a jet rather than piston engine connected to a propeller. Turboprop engines are increasingly used when more horsepower is needed for speed or payload. Fins specs of Turboprop Aircraft on JetRequest.com.

A turboprop airliner is a turboprop engine powered, wide body heavy airplane that is traditionally used for commercial travel. Find specs of Turboprop Airliners on JetRequest.com.

An irregular motion of the atmosphere that interrupts the flow of wind.

Twin Engine Piston airplanes have two identical piston-powered engines connected to the propellers, which provide thrust to move the aircraft on the ground and through the air. Find specs of Multi Engine Piston Aircraft on JetRequest.com.

A Type Certificate is awarded by aviation regulating bodies to aerospace manufacturers after it has been established that the particular design of a civil aircraft, engine, or propeller has fulfilled the regulating bodies' current prevailing airworthiness requirements for the safe conduct of flights under all normally conceivable conditions (military types are usually exempted). Aircraft produced under a type certified design are issued a Standard Airworthiness Certificate.