that' s my case, I have a frozen ATP, 320 rating and multi engine license IR for single pilot.
my 320 and muti engine are valid for 6 years after last check.
still need to be current every year if you want fly.
If I let my 320 expired, I can still renew the multi engine which cost less , and I will be good for 6 years.If I don't renew anything after 6 years , I have another year to renew my expired multi engine but the course could be longer and more expensive .
If I still do nothing after 7 years, everything is expired, and I need to resit the 14 exams, pass the multi engine to get IR and pass the 320 course if i want a job on the 320. Total cost: 50'000-70'000 euro
and I can tell you, spend more money or give up! because I am not sure I will find a job in Europe and I am not motivated anymore.
I have to know where I can renew the 320, and at what cost?