Chek Lap Kok
The service has its head office in, and operates from, the southwestern end of Hong Kong International Airport at Chek Lap Kok. Before the opening of the Chek Lap Kok airport in 1998, it operated from the old Kai Tak Airport (i.e. the former Hong Kong International Airport). GFS patrols a radius of Hong Kong's Maritime Search and Rescue Region, which covers most of the South China Sea basin, as well as the Hong Kong Flight Information Region.