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Don't use below as a reference, they are GB procedures and have not been corrected for Ireland
Flight Information comes in two variations: Flight Information Service at Aerodromes and Flight Information Service at Area Control Centres.
Flight Information Service is provided at an aerodrome to give information for the safe and efficient conduct of flights in the Aerodrome Traffic Zone. From the information received, pilots decide the appropriate course of action to be taken to ensure the safety of flight.
A Flight Information Service Officer (FISO) at an aerodrome has the following responsibilities:
Flight Information service is provided at an ACC to give information for the safe and efficient conduct of flights in class G airspace within the Flight Information Regions of the UK. FISOs may pass traffic information to anyone who calls on the RT. From the information provided, pilots decide the appropriate course of action to be taken to ensure the safety of flight.
A Flight Information Service Officer (FISO) at an ACC has the following responsibilities:
Flight Information centres are responsible for providing service to all aircraft within their respective regions. These regions do not match FIRs. Flight Information services at aerodromes are responsible for the aerodrome traffic zone at the airfield.
In addition to the general guidelines a FISO must:
A FIS is a non radar service provided either separately or in conjunction with other services. Under a FIS, the following conditions apply:
Flight Information Centres don't have radar, and therefore we recommend you completely obstruct your scope with the COMM, and I/O windows.
We recommend Aerodrome Flight Information Service use the same settings as towers would.