I dont know if this has been covered elsewhere but i thought id post for the benefit of anyone who may have the same misfortune as i did. After a few flights on the Hawk everything was trimmed out and flying nicely. I also changed the gear to Jet 1A, a very good and worthwhile upgrade. During the second flight today after the model passed me on a high speed pass i saw the canopy frame, then the base unit with pilot in it fly off. The trim of the aircraft didnt seem to change too much so i carried on flying it (i hate wasting flying time!) and after landing realised on its way off the canopy had punched a hole through the right wing near the tip.

On inspection it seems it is easy for the canopy frame to be force back by air pressure and then to pop off the retaining pegs. This is an inadequate canopy retention design. IMHO it needs to be changed to a CArf type design with tongues out the bottom of the fram e sitting in slots in the fusealage frame seating rim. This way it cannot move in flight and find its way off the aircraft. I hadnt built the model originally, if i had i would have probably done it this way to start with.

Otherwise, very nice flyingmachine!