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Heavy (aeronautics)
Wake turbulence categories and wake turbulence groups are defined by the International Civil Aviation Organization for the purpose of separating aircraft in flight, due to wake turbulence. Wake turbulence categories Since 2020, there are four categories, based on maximum certificated take-off mass:Amendment No. 9 to the Procedures for Air Navigation Services: Air Traffic Management (Doc 4444). ICAO, 5 November 2020Better URL needed./ref> * Light (L) — aircraft types of 7,000 kg or less. * Medium (M) — aircraft types more than 7,000 kg but less than 136,000 kg; and * Heavy (H) — all aircraft types of 136,000 kg or more, with the exception of aircraft types in Super (J) category; and * Super (J) — aircraft types specified as such in ICAO Doc 8643, Aircraft Type Designators. As of 2023, the only aircraft in Category J is the Airbus A380, with an MTOW of . Before its destruction, the single Antonov An-225 (MTOW of ) was classified by the FAA as Super, although it is cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Civil Aviation Organization
The International Civil Aviation Organization (ICAO ) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international scheduled air transport, air transport to ensure safe and orderly growth. The ICAO headquarters are located in the Quartier international de Montréal of Montreal, Quebec, Canada. The ICAO Council adopts standards and recommended practices concerning air navigation, its infrastructure, flight inspection, prevention of unlawful interference, and facilitation of border-crossing procedures for international civil aviation. ICAO defines the protocols for Aviation accidents and incidents, air accident investigation that are followed by :Organizations investigating aviation accidents and incidents, transport safety authorities in countries signatory to the Convention on International Civil Aviation. The Air Navigation Commission (ANC) is the techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing 757
The Boeing 757 is an American Narrow-body aircraft, narrow-body airliner designed and built by Boeing Commercial Airplanes. The then-named 7N7, a twinjet successor for the trijet Boeing 727, 727, received its first orders in August 1978. The prototype completed its maiden flight on February 19, 1982, and it was Federal Aviation Administration, FAA certified on December 21, 1982. Eastern Air Lines placed the initial variant in commercial service on January 1, 1983. A package Cargo aircraft, freighter (PF) variant entered service in September 1987 and a combi aircraft, combi model in September 1988. The stretched was launched in September 1996 and began service in March 1999. After 1,050 had been built for 54 customers, production ended in October 2004, while Boeing offered the largest Boeing 737 NG, 737 NG variants as a successor to the -200. The jetliner is powered by 36,600–43,500 lbf (163–193 kN) Rolls-Royce RB211 or Pratt & Whitney PW2000 underwing turbofa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Approach Category
An aircraft approach category is a grouping which differentiates aircraft based on the speed at which the aircraft approaches a runway for landing. They are used to determine airspace, obstacle clearance and visibility requirements for instrument approaches. Definition The International Civil Aviation Organization (ICAO) classifies aircraft by their indicated airspeed at runway threshold ( Vat, also known as approach speed or VREF). The categories are as follows: *Category A: less than indicated airspeed (IAS) *Category B: or more but less than IAS *Category C: or more but less than IAS *Category D: or more but less than IAS *Category E: or more but less than IAS *Category H: Helicopters Helicopters may use Category A minima on instrument procedures designed for aeroplanes, or may use specific procedures designed for helicopters. Threshold speed is calculated as 1.3 times stall speed Vs0 or 1.23 times stall speed Vs1g in the landing configuration at maximum certific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single European Sky ATM Research
Single European Sky ATM Research (SESAR) is a collaborative project to completely overhaul European airspace and its air traffic management (ATM). The actual program is managed by the SESAR Joint Undertaking as a public–private partnership (PPP). Project The SESAR project is composed of three phases: * a Definition phase (2004–2008) to deliver an ATM master plan defining the content, development, and deployment plans of the next generation of ATM systems. This definition phase is led by Eurocontrol, and co-funded by the European Commission under the Trans-European Transport Networks program and executed by a large consortium of all air transport stakeholders. * a Development phase (2008–2013), to produce the required new generation of technological systems and components as defined in the definition phase. This phase (budget: 2.1 billion euro) is managed by the SESAR Joint Undertaking. * a Deployment phase (2014–2020), for large-scale production and implementa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Based Separation
The impact of strong headwinds on an aircraft’s speed during approach results in decreasing landing rates, generating delays and cancellations at airports with a significant cost to airspace users and the travelling public. In early 2000, EUROCONTROL started researching Time Based Separation (TBS), a new operating procedure for separating aircraft by time during strong headwind conditions, instead of distance. TBS addresses headwind disruptions by reducing the spacing between pairs of aircraft. As wake decay is more rapid in strong headwinds conditions, wake vortex is quickly dispersed permitting a safe reduction in the spacing between aircraft through TBS preserving runway throughput. NATS joined the TBS research in SESAR and in 2014 was preparing its first deployment for spring 2015 at London Heathrow airport Heathrow Airport , also colloquially known as London Heathrow Airport and named ''London Airport'' until 1966, is the primary and largest international airpor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EUROCONTROL
The European Organisation for the Safety of Air Navigation, commonly known as Eurocontrol (stylised ''EUROCONTROL''), is an international organisation working to achieve safe and seamless air traffic management across Europe. Founded in 1963, Eurocontrol currently has 42 member states with headquarters in Brussels, Belgium. It has several local sites as well, including an Innovation Hub in Brétigny-sur-Orge, France, the Aviation Learning Centre (ALC) in Luxembourg, and the Maastricht Upper Area Control Centre (MUAC) in Maastricht, Netherlands, the Netherlands. The organisation employs approximately two thousand people, and operates with an annual budget in excess of half a billion euros. Although Eurocontrol is not an agency of the European Union, the EU has delegated parts of its Single European Sky regulations to Eurocontrol, making it the central organisation for coordination and planning of air traffic control for all of Europe. The EU itself is a signatory of Eurocontrol and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRACON
Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC is to prevent collisions, organise and expedite the flow of traffic in the air, and provide information and other support for pilots. Personnel of air traffic control monitor aircraft location in their assigned airspace by radar and communicate with the pilots by radio. To prevent collisions, ATC enforces Separation (air traffic control), traffic separation rules, which ensure each aircraft maintains a minimum amount of 'empty space' around it at all times. It is also common for ATC to provide services to all General aviation, private, Military aviation, military, and commercial aircraft operating within its airspace; not just civilian aircraft. Depending on the type of flight and the class of airspace, AT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airbus A321
The Airbus A321 is a member of the Airbus A320 family of short to medium range, Narrow-body aircraft, narrow-body, commercial passenger Twinjet, twin engine jet airliners; it carries 185 to 236 passengers. It has a stretched fuselage which was the first derivative of the baseline A320 and entered service in 1994, about six years after the original A320. The aircraft shares a common type rating with all other Airbus A320-family variants, allowing A320-family pilots to fly the aircraft without the need for further training. In December 2010, Airbus announced a new generation of the A320 family, the Airbus A320neo family, A320neo (new engine option). The similarly lengthened fuselage A321neo variant offers new, more efficient engines, combined with airframe improvements and the addition of wingtip device, winglets (called ''Sharklets'' by Airbus). The aircraft delivers fuel savings of up to 15%. The A321neo carries up to 244 passengers, with a maximum range of for the long-range v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing 747-400
The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747. The ''Advanced Series 300'' was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and of additional range. Northwest Airlines became the first customer with an order for 10 aircraft on October 22, 1985. The first 747-400 was rolled out on January 26, 1988, and made its maiden flight on April 29, 1988. Type certification was received on January 9, 1989, and it entered service with Northwest on February 9, 1989. It retains the 747 airframe, including the 747-300 stretched upper deck, with winglets. The 747-400 offers a choice of improved turbofans: the Pratt & Whitney PW4000, General Electric CF6-80C2 or Rolls-Royce RB211-524G/H. Its two-crew glass cockpit dispenses with the need for a flight engineer. It typically accommodates 416 passengers in a three-class layo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memphis International Airport
Memphis International Airport is a civil-military airport located southeast of downtown Memphis in Shelby County, Tennessee, United States. It is the primary international airport serving Memphis. It covers and has four runways., effective April 17, 2025. It is home to the FedEx Express global hub, often referred to as the FedEx Superhub or simply the Superhub, which processes many of the company's packages. Nonstop FedEx destinations from Memphis include cities across the continental United States, Canada, Europe, the Middle East, Asia, and South America. From 1993 to 2009, Memphis International was the world’s busiest airport for cargo operations. It dropped to second place in 2010, just behind Hong Kong. It still remained the busiest cargo airport in the United States and the Western Hemisphere. It briefly rose to first place once again in 2020 due to the surge in ecommerce partly caused by the COVID-19 pandemic but dropped back to second place in 2021. The airport a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Aviation Administration
The Federal Aviation Administration (FAA) is a Federal government of the United States, U.S. federal government agency within the United States Department of Transportation, U.S. Department of Transportation that regulates civil aviation in the United States and surrounding international waters. Its powers include air traffic control, certification of personnel and aircraft, setting standards for airports, and protection of U.S. assets during the launch or re-entry of commercial space vehicles. Powers over neighboring international waters were delegated to the FAA by authority of the International Civil Aviation Organization. The FAA was created in as the Federal Aviation Agency, replacing the Civil Aeronautics Administration (United States), Civil Aeronautics Administration (CAA). In 1967, the FAA became part of the newly formed U.S. Department of Transportation and was renamed the Federal Aviation Administration. Major functions The FAA's roles include: *Regulating U.S. co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wake Turbulence
Wake turbulence is a disturbance in the Atmosphere of Earth, atmosphere that forms behind an aircraft as it passes through the air. It includes several components, the most significant of which are wingtip vortices and jet-wash, the rapidly moving gases expelled from a jet engine. Wake turbulence is especially hazardous in the region behind an aircraft in the takeoff or landing phases of flight. During take-off and landing, an aircraft operates at a high angle of attack. This Flight dynamics (fixed-wing aircraft), flight attitude maximizes the formation of strong vortices. In the vicinity of an airport, there can be multiple aircraft, all operating at low speed and low altitude; this provides an extra risk of wake turbulence with a reduced height from which to recover from any upset. Definition Wake turbulence is a type of clear-air turbulence. In the case of wake turbulence created by the wings of a heavy aircraft, the rotating vortex-pair lingers for a significant amount of time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
