Flying in EU with non-EU PPL 28 days per year "holiday" license

[selfin]

"if the flight crew/pilot's licence were accepted in another country it must follow that the radio rating was included"

The operating of aircraft radio equipment will be subject to the laws of the state of registry. It should not be assumed that any foreign pilot licence validation certificate confers the privilege.

The Radio Regulations (provision 37.1) annexed to the ITU Convention give States discretion in accepting a foreign radiotelephone operating certificate/licence/permit, eg Canada allows its aircraft radios to be operated by US citizens who hold a US pilot certificate and US restricted radiotelephone operator's permit (Treaty Series 1952 No 7, art I). The UK ANO 2016, art 150, has made a meal of deeming foreign RT certificates valid. The article title includes the words "... deeming a non-United Kingdom radiotelephony licence valid for any aircraft" (emphasis added), however, para 3 appears to limit this validity to non–Part-21 (UK-registered) aircraft.