He would be charged with endangerment, because it would not be a controlled scenario. You don't realise how strict the rules are with pilots. One pilot recently arrived at the airport with a bottle of booze in his bag. Realising he couldn't take it on the place he went to the gents and dropped it into a bin. A fellow pilot reported him as behaving suspiciously as it was unusual for him to visit the gents at that time. Police investigated and found the bottle. The flight was halted, passengers disembarked, the pilot escorted off, and interviewed. He was immediately suspended. That was before they had evidence that he'd done anything wrong, only a suspicion his movements were unusual. A pilot who gave his hostess a length during a flight would be in prison for some time, guaranteed.