Helsinki Sector J is the northernmost of the Helsinki ACC sectors, covering Helsinki FIR north of Oulu. It operates on 126.1 MHz.
Sector J is usually very quiet, and therefore often combined with Sector L (EFIN_JL_CTR). During the winter season, however, when traffic levels to Rovaniemi, Ivalo and Kemi tend to increas, workload can require Sector J to be operated on its own.
The main tasks of Sector J are:
- Departures and arrivals from/to Rovaniemi, Kemi, Kittilä and Ivalo
- Overflying traffic east/west
- New squawk assignments for traffic from Russia
- Traffic information below FL95