| Controlled Airspace | Uncontrolled Airspace | Classifications & Division | RVSM |
Within uncontrolled airspace in Sweden, aircraft may operate free of the control of an ATC unit. However all aircraft are required at all times to conduct their activities with regard to the CAA Regulations.
When cruising in uncontrolled airspace pilots are advised to monitor continuously the emergency frequency 121.5, and 122.8
Aircraft shall comply with the semi-circular rule, which means that the cruising level shall be selected according to the magnetic track. Even flight levels shall be westbound; Odd flight levels shall be eastbound.
There are 2 types of ATC service available to aircraft outside of controlled airspace:
Alerting Service:
An alerting service is provided to notify appropriate organisations regarding aircraft in need of search and rescue aid, and assist such organisations as required.
Flight Information Service:
A Flight Information Service (FIS) is a non-radar service provided, either separately or in conjunction with other services, for the purposes of supplying information useful for the safe and efficient conduct of flights. Under a FIS the following conditions apply:
- Provision of the service includes information about weather, changes of serviceability of facilities, conditions at aerodromes and any other information pertinent to safety.
- The controller may attempt to identify the flight for monitoring and co-ordinationpurposes only. Such identification does not imply that a radar service is being provided or that the controller will continuously monitor the flight.
- Pilots must be left in no doubt that they are not receiving a radar service.
- Controllers are not responsible for separating or sequencing aircraft.