Originally Posted by Mugatu

We gotta stop talking about Part 117. Part 117 has nothing to do with a pilot’s personal time. It’s strictly company related, even the fit for duty we sign. We sign it agreeing we are not fatigued due to any company related rest requirements.

If a pilot shows up not prepared to fly because they came in on a red eye and then flying all day, it’s whole different ball of wax. I’d say ASAP is probably the best choice. And if you think the other pilot is not safe, stop the show, call crew scheduling and tell them to send in a reserve. If no reserves are available (because hey, the tired pilot is on premium so highly likely) and the company cancels a flight(s), guess what will happen? If CD is serious, you can bet there will be a Sec19. This stuff will stop fast.