The FSS position is responsible for relaying communications between the OCC and aircraft over the North Atlantic, as well as entering position updates into the OCMS.
Up to three flight service specialists may work as Gander FSS. The area of coverage for each sector will depend on actual traffic, and shall be decided by the FSS supervisor , S sector (or the EGGX-Staff)
Typically N serves traffic north of 50W, S serves traffic south of 50W and W traffc west from 50W onwards.
All communications take place HF frequencies. As the current pilot/controller software doesn’t support HF frequencies a modified decimal system has been arranged where the frequency 12237 kHz is entered as 122.37 in IvAc. Phaseology for the said frequency remains “one two two three seven kilohertz”
SELCAL shall be used whenever aircraft are equipped. On initial call-up SELCAL should be verified. Subsequent communications shall always be initiated with a SELCAL signal.
To transmit a SELCAL signal enter .selcal [callsign] in the IvAc comm. box and transmit. If the SELCAL check fails the aircraft should be advised to monitor the frequency continuously.
Aircraft will transmit position reports to Gander or/and Shanwick FSS at each waypoint along their route, or every 45 minutes, whichever is shorter. Upon receiving the report Gander FSS or/and Shanwick FSS shall enter the estimate time as well as any remarks/requests into the OCMS flight strip.
If any portion of the aircraft’s transmission is unreadable, or if parts are omitted reconfirm with the aircraft before reading back the position report.
Aircraft will make all requests on FSS frequencies. These shall be relayed to the OCC controller: