If you work outside of the aviation industry, you may be unfamiliar with terms used in some of the articles posted on our website. Therefore, we thought it would be helpful to include here a list of most commonly used expressions, acronyms and abbreviations.

  • Autonomous UAS: an operation during which an UAS is operating without human intervention in the management of the flight.
  • Avigation Easement Area: An avigation easement is a property right acquired from a landowner which protects the use of airspace above a specified height, and imposes limitations on use of the land subject to the easement. Generally, uses that attract birds or interfere with pilot visibility and instrumentation are prohibited.
  • CAR: Civil Aviation Regulation.
  • Commercial operation: An UAS operation conducted for business purposes (mapping, security surveillance, wildlife survey, aerial application, etc.) other than commercial air transport, for remuneration or hire.
  • Congested area: any area of a city, town or settlement which is substantially used for residential, industrial, commercial or recreational purposes.
  • Controlled airspace: An airspace of defined dimensions within which air traffic control service is provided in accordance with the airspace classification.
  • DCAA: Dubai Civil Aviation Authority.
  • DFTC: Dubai Film and TV Commission.
  • FIR: Flight Information Region is a specified region of airspace in which a flight information service and an alerting service (ALRS) are provided. It is the largest regular division of airspace in use in the world today.
  • GCAA: United Arab Emirates General Civil Aviation Authority.
  • MOD: Ministry of Defence.
  • NOC: No Objection Certificate.
  • Non-segregated airspace: Any airspace other than segregated airspace.
  • NOTAM: Notice To Airmen: a written notification issued to pilots before a flight, advising them of circumstances relating to the state of flying.
  • Novel technology: is a new technology that has never been used on an UAS. The technology may be used as payload or built in for the operation of the UAS.
  • Operational control: The exercise of authority over the initiation, continuation, diversion or termination of a flight in the interest of safety.
  • Operator: An organization engaged in the operation other than for recreational, of an UAS.
  • Populous area: The area that has a sufficient density of population for some aspect of the operation, or some event that might happen during the operation (in particular, a fault in, or failure of, the UAS) to pose an unreasonable risk to the life, safety or property of somebody who is in the area but is not connected with the operation.
  • RPAS: Remotely Piloted Aircraft System.
  • RPIC: Remote Pilot in Command.
  • RPOC: Remote Operator in Command.
  • RTA: Roads and Transport Authority.
  • Segregated airspace: Airspace of specified dimensions allocated for exclusive use to specific user(s).
  • TRA: Telecommunications Regulatory Authority.
  • UAS: Unmanned Aerial (or Aircraft) Systems.
  • UAV: Unmanned Aerial Vehicle. This term is sometimes used interchangeably with the term UAS, defined above.
  • Uncontrolled airspace: Glass G airspace in which aircraft are not subject to Air Traffic Control service.
  • UOC: Unmanned aerial systems Operator Certificate; a certificate authorising an operator to carry out specified operations other than recreational with an UAS.
  • Vicinity of an aerodrome: Any area as specified in CAR PART III Chapter 7.
  • VLOS operation: An operation in which the UAS Operating Crew maintains direct visual contact with the UAS to manage its flight and meet separation and collision avoidance responsibilities.
  • VLOS: Visual Line Of Sight.
  • VMC: Visual Meteorological Conditions: Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling, equal to or better than specified minima.