Before you start recording video and/or audio, make yourself familiar with current GDPR regulations and make sure everybody involved agrees - flight school, mechanics to sign off the mounts, if you can see restricted public space the ones you possibly film, etcetereas. Also keep in mind where you record and maybe submit your material, i.e. in certain countries storing video or audio material outside the country is forbidden, i.e.2. in certain countries recording ATC audio is criminal, i.e. inform yourself!!!