Infrastructure tools to support an effective radiation oncology learning health system

In aviation, a control area (CTA) is "a controlled airspace extending upwards from a specified limit above the earth", not less than 200m (700 feet), although the limit does not need to be established uniformly within a control area.^[1] ICAO recommends for the lower level to coincide with a VFR cruising level if the lower level limit of a control area is above 900 m (3000 feet) MSL (mean sea level), and the VFR cruising level to not have to be lowered to less than 200 m (700 feet) due to atmospheric conditions.^[1] The upper limit should be established when either air traffic control service will not be proveded above that level, or there is another (upper) control area above this control area.^[1]

Control areas are established in any areas when the density of air traffic is high:^[2]

An airway is a case of a "control area or portion of thereof established in the form of a corridor".^[3]
Terminal Control Area is "a control area normally established at the confluence of ATS routes in the vicinity of one or more major aerodromes."^[1]^[3]

A control area usually is situated on top of a control zone (CTR) and provides protection to aircraft climbing out from the airport by joining the low-level control zone to the nearest airways. In the UK, they are generally class A, D or E.

Control areas are particularly useful where there are busy airports located close together. In this case, a single CTA will sit over all of the individual airports' CTRs. In larger-scale cases, this is known as a terminal manoeuvring area (TMA, or TCA).

References

^ ^a ^b ^c ^d "Annex 11 to the Convention on International Civil Aviation: Air Traffic Services" (PDF) (15 ed.). International Civil Aviation Organization (ICAO). July 2018. Retrieved 2024-06-28.
^ Smith, David (2021). Air Traffic Control Handbook. Manchester, England: Crécy Publishing Ltd. ISBN 978-1-9108-0999-0.
^ ^a ^b "Air Traffic Services Safety Requirements (CAP670)". UK Civil Aviation Authority. June 2019. Retrieved 2024-06-28.

Commercial aviation
Airlines	Airline codes Airline holding companies Cargo airline Charter airlines Flag carriers Low-cost airlines Non-scheduled airline Passenger airlines Regional airlines
Alliances	Oneworld SkyTeam Star Alliance Value Alliance Vanilla Alliance U-FLY Alliance
Trade groups	International ACO ATAG IATA IATAN IFALPA ISTAT United States A4A RAA Europe A4E ASD ECA EBAA ERA ETWF Other regions AACO AAPA AFRAA RAAA
Aircrew	Pilot in command (Captain) First officer Second officer Third officer Relief crew Flight attendant Flight engineer Loadmaster Aircraft pilot Purser Dead mileage
Airliner	Travel class First class Business class Premium economy class Economy class Basic economy class Aircraft cabin Aircraft lavatory Aircraft seat map Airline meal Airline seat Buy on board Crew rest compartment In-flight entertainment Inflight smoking Galley Sickness bag
Airport	Aerodrome Airline hub Airport check-in Airport lounge Airport rail link Airport terminal Airside pass Airstair Boarding Domestic airport Gate International airport Jet bridge Low-cost carrier terminal Runway Transit hotel
Customs / Immigration	Arrival card Border control (internal) Departure card Passport Timatic Travel document Travel visa (Electronic)
Environmental effects	Hypermobility Environmental effects of aviation
Law	Air transport agreement Air route authority between the United States and China Bermuda Agreement (UK–US, 1946–1978) Bermuda II Agreement (UK–US, 1978–2008) Cross-strait charter Beijing Convention Cape Town Treaty Chicago Convention Convention on the Marking of Plastic Explosives European Common Aviation Area Flight permit Freedoms of the air EU–US Open Skies Agreement Hague Hijacking Convention Hague Protocol Montreal Convention Paris Convention of 1919 Rome Convention Sabotage Convention Tokyo Convention Warsaw Convention
Intergovernmental organizations	ICAO ECAC Eurocontrol EASA ENCASIA
Baggage	Bag tag Baggage allowance Baggage carousel Baggage cart Baggage reclaim Baggage handler Baggage handling system Baggage sizer Checked baggage Hand luggage Lost luggage (WorldTracer) Luggage lock
Aviation safety	Air rage Air traffic control Air traffic service Aircraft safety card Airport authority Airport crash tender Airport police Airport security Airspace class Area control center Brace position Civil aviation authority Control area Control zone Controlled airspace Evacuation slide Flight information region Flight information service Flight recorder Instrument flight rules Overwing exits Pre-flight safety demonstration Sky marshal Special use airspace Special visual flight rules Terminal control area Terminal control center Uncontrolled airspace Upper information region Visual flight rules
Airline tickets	Airline booking ploys Airline reservations system Airline ticket Airline timetable Bereavement flight Boarding pass Codeshare agreement Continent pass Electronic ticket Fare basis code Flight cancellation and delay Frequent-flyer program Government contract flight One-way travel Open-jaw ticket Overbooking (Overselling) Passenger name record Red-eye flight Round-the-world ticket Standby Tracking Travel agency Travel website
Ground crew	Aircraft maintenance technician Aircraft ground handling Baggage handler Flight dispatcher
Miscellaneous	Air cargo Air travel Aviation taxation and subsidies Mile high club

See also

References