I understand that a UK work-round is that you will be considered compliant after 31 Dec 17 if you carry a 8.33 portable in the aircraft, so you can still use your panel 760 set to communicate with all the stations still on 25khz spacing. We've just bought a 8.33 portable for Club use.
One question that I asked an equipment supplier but they were unable to answer... What happens to the 25khz spacing radios we all use for Air/Ground (mostly ICOM AC110). They didn't know. Presumably, provided there isn't a nearby 8.33 with an adjacent channel, you can still keep transmitting on the old 25khz channel without interfering with anyone. ICOM do now market a new 8.33 radio for ground installations but why spend money if you don't have to?
TOO