An unpowered fixed-wing heavier-than-air craft. (Also glider)

Satellite Communications, on intercontinental airliners and business jets for (non- operational) air-to-ground voice communications via ground relay stations. SATCOM provides worldwide coverage, with the exception of operation at the high latitudes (such as needed for flights over the poles).

Includes all passenger and cargo flights operating on regularly-scheduled routes.

A pilot designated to be second in command of an aircraft during flight. He will relieve the pilot if necessary. Also referred to as co-pilot.

Describes the unit of flight between take-off and landing. Sometimes used interchangeably with the term leg.

A per-person, per-leg fee imposed by the federal government on flights.

Short for Single Engine Piston aircraft. Find specs of Single Engine Piston aircraft on JetRequest.com.

Maintaining a specific minimum distance between an aircraft and another aircraft or terrain to avoid collisions, normally by requiring aircraft to fly at set levels or level bands, on set routes or in certain directions, or by controlling an aircraft's speed.

Internationally agreed upon minimum separation limits for aircraft in flight.

A serial number is a unique number assigned for identification which varies from its successor or predecessor by a fixed discrete integer value. The complete aircraft serial number is assigned to the aircraft by the manufacturer.

An aeroplane with two wings (or pairs of wings), where one (often the lower) is significantly smaller than the other in span and/or chord.

A specified point to the side of the runway. Many times, used as one of the locations for measuring aircraft noise levels.

Significant Meteorological Information. An advisory issued in times of severe weather that is significant to the safety of all aircraft.

Single Engine Piston airplanes have one piston-powered engine connected to the propeller, which provide thrust to move the aircraft on the ground and through the air. See examples of Single Engine Piston Aircraft on JetRequest.com.

Same as Jet Card. Card issued by Jet Operators and Charter Brokers to clients who choose to keep funds on account. For convenience, reduced costs, and other reasons, some jet charter flyers will choose to open an account with the Air Charter Operator or Jet Charter Broker of their choice. Most jet cards are purchased in block hours or in a straight dollar for dollar method.

A maneuver where an airplane pilot rolls the aircraft in one direction with the ailerons and yaws it in the opposite direction with the rudder. This results in the aircraft continuing to move forward but presenting a larger cross-section to the oncoming air - thereby creating drag and causing the aeroplane to lose altitude rapidly in a controlled manner.

The turbulent flow of air driven backward by the propeller or propellers of an aircraft.

Landing slots or Airport slots are rights allocated to an entity by an airport or government agency granting the slot owner the right to schedule a landing or departure during a specific time period. Also the particular time at which an aircraft is scheduled to depart.

Standard Operating Procedures outline the criteria which enables flight crew to perform their tasks effectively as a team.

The dimension of a wing perpendicular to the direction of motion. (Compare with chord and thickness.)

SVRF. Set of aviation regulations under which a pilot may operate an aircraft. In Class A airspace, flight under visual flight rules (VFR) is not permitted and instrument flight rules (IFR) flight is the norm. Pilots may as an alternative to IFR request an SVFR clearance to enter the airspace and fly visually. They need to be equipped with a transponder. In other controlled airspace, when the local weather is less than the minimums required for flight under visual flight rules (VFR) and again IFR would be the norm. Pilots may again as an alternative to IFR request an SVFR clearance to enter the airspace and fly visually.

The specific impulse of a propulsion system is the impulse (change in momentum) per unit of propellant.

The rate of motion over a distance in time.

The rate of travel of a sound wave through an elastic medium. The speed of sound is equal to 769 mph and is referred to as Mach 1 by aerospace physics.

A long, narrow, hinged, moveable flap on the upper surface of an airplane wing that reduces lift and increases drag when raised.

Spoilers that can be used asymmetrically to achieve the effect of ailerons, i.e. to roll an aircraft by reducing the lift of one wing but unlike ailerons not increasing the lift of the other wing. As a side effect a raised spoileron also increases the drag on one wing which causes the aircraft to yaw which can be compensated with the rudder.

1- A four-digit number entered into the transponder by a pilot to identify his aircraft to air traffic controllers.

2- A problem with an aircraft reported to maintenance for repairs.

A control surface which combines the function of the horizontal stabilizer and elevators in one by allowing the entire horizontal stabilizer to move and control the pitch of the aircraft.

Loudest aircraft grouping in regards to Aircraft Noise. A Stage 1 noise level means a take-off, flyover, or approach noise level greater than the Stage 2 noise limits.

Second loudest aircraft grouping in regards to Aircraft Noise. Stage 2 noise limits for airplanes regardless of the number of engines are as follows: 1- For Take-off: 108 EPNdB for maximum weights of 600,000 pounds or more, reduced by 5 EPNdB per halving of the 600,000 pounds maximum weight down to 93 EPNdB for maximum weights of 75,000 pounds and less. 2- For Sideline and Approach: 108 EPNdB for maximum weights of 600,000 pounds or more, reduced by 2 EPNdB per halving of the 600,000 pounds maximum weight down to 102 EPNdB for maximum weights of 75,000 pounds or less.

Third loudest (second quietest) aircraft grouping in regards to Aircraft Noise. Stage 3 noise limits are as follows: 1- For Take-off: airplanes with more than 3 engines 106 EPNdB for maximum weights of 850,000 pounds or more, reduced by 4 EPNdB per halving of the 850,000 pounds maximum weight down to 89 EPNdB for maximum weights of 44,673 pounds or less. 2-For Take-off: airplanes with 3 engines 104 EPNdB for maximum weights of 850,000 pounds or more, reduced by 4 EPNdB per halving of the 850,000 pounds maximum weight down to 89 EPNdB for maximum weights of 63,177 pounds or less. 3- For Take-off: airplanes with fewer than 3 engines 101 EPNdB for maximum weights of 850,000 pounds or more, reduced by 4 EPNdB per halving of the 850,000 pounds maximum weight down to 89 EPNdB for maximum weights of 106,250 pounds or less. 4- For Sideline: regardless of the number of engines 103 EPNdB for maximum weights of 882,000 pounds or more, reduced by 2.56 EPNdB per halving of the 882,000 pounds maximum weight down to 94 EPNdB for maximum weights of 77,200 pounds or less. 5- For Approach: regardless of the number of engines 105 EPNdB for maximum weights of 617,300 pounds or more, reduced by 2.33 EPNdB per halving of the 617,300 pounds maximum weight down to 98 EPNdB for maximum weights of 77,200 pounds or less.

Quietest aircraft grouping in regards to Aircraft Noise. Stage 4 noise limits are a cumulative 10 EPNdB (effective perceived noise level in decibels) less than the current Stage 3 limits.

The distance of the air charter itinerary's non-stop leg.

A condition of an airplane or an airfoil in which lift decreases and drag increases due to the separation of airflow.

The speed below which a clean aircraft of stated weight, with the engines throttled back, can no longer maintain a straight and level flight because the wing is stalling. Factors that affect the basic stalling speed are the weight, load factor, power, and slipstream and changes in the configuration (undercarriage up/down, flaps out/in, external stores, etc.). The stalling angle of an aircraft is fixed but the stalling speed is dependent on these factors.

A standard rate turn is a turn in which an airplane completes a 360 degree turn in 2 minutes. This is done by having a turn of 3 degrees per second.

Same as a mile. A unit of length equal to 5,280 feet or 1,760 yards (1,609 meters), used in the United States and other English-speaking countries. Also referred to as a land mile.

Short Take-Off and Landing

A STOLport or STOLPORT is an airport designed with STOL (Short Take-Off and Landing) operations in mind, normally having a short single runway.

Simplified way to remember the cycles of a four-stroke engine: intake, compression, power, exhaust.

A jet that falls between the classifications of a light jet and a midsize jet. A super light jet is typically larger and has longer range than a light jet but still not considered a midsize jet. See examples of Super Light Jets on JetRequest.com.

A midsize aircraft with a takeoff weight close to 255,000 lbs. They typically have seating capacity for 8 to 10 passengers. See examples of Super Midsize Jets on JetRequest.com.

Special Visual Flight Rules. Set of aviation regulations under which a pilot may operate an aircraft. In Class A airspace, flight under visual flight rules (VFR) is not permitted and instrument flight rules (IFR) flight is the norm. Pilots may as an alternative to IFR request an SVFR clearance to enter the airspace and fly visually. They need to be equipped with a transponder. In other controlled airspace, when the local weather is less than the minimums required for flight under visual flight rules (VFR) and again IFR would be the norm. Pilots may again as an alternative to IFR request an SVFR clearance to enter the airspace and fly visually.