I don't know if this is the most indicated stackexchange site to ask this, but I'll give it a try:
I know 902-928 MHz is part of ISM band, and I know for sure it is a free band to use in Region 2 (USA, Canada...).
I am in Region 1, Europe. I have searched for a while and I haven't found anything clear. It would be so nice to have an intuitive web to look for bands availability by countries, but I only know where to look the ones for my country (Spain), and it's not very clear either.
Anyway, I think GSM-900 is into that band in Europe, so 902-928 would not be usable for other practises. Am I right?
It is intended to be used onto an aircraft, so I don't know if regulations change for that kind of uses.