We are planning to develop an app that allows general pilots to fill/send a flight plan to the ATS. We're wondering to know if it is needed to have a regular access (register access or account) to the ATS network (thru AMHS or other way).
The idea is to automate the process through an app for general pilots.
For example, Garmin Pilot's app works and offers same solution., among many other related solutions for pilots.