SAS
That is a terrible state of affairs! I aggree that the best route is the official one but with evidence eg tech logs and even testimony from the students as to who flew it. I would take him/her straight to the CAA. I think many of us have come accross pushy owner/operators who believe the rules don't apply. Not only do they endanger others but also we all end up being dragged in to the sinking mess. I wish you luck.
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