Hong Kong can be done on using AMERICAN FLIGHT SUPPORT Ops Team, we will help you register and the first time will be the worst as there are several systems you need to register for. After the first time, it gets much easier, and permits can be obtained in just a few days.
Basically, you’ll need to apply for Landing Permit, Parking, Handling, and Slot for each landing. AMERICAN FLIGHT SUPPORT can do this, we can help in short notice. we prefer you plan a couple of weeks before your very first flight.