Thanks. Sounds like for a DH trip, you have to be in position of 100 nm of the airport. Is the same true for a regular trip originating out of MEM? Say a 2230 local departure out of MEM to XYZ. For this flight, report 2130L, do you have to be in MEM by 1330L? If so, I'm not sure I see the benefit for commuters. In the pax airlines no one cares as long as you're fit and rested enough. Commuting choices are left to the pilot, some require 2-3 backups and as long as you make checkin it is fine. Now with FAR 117 and the whole 8 hrs of uninterrupted rest before duty, I'll defer that to the experts. I guess all one can say is that plenty of pilots do same-day commutes and do so safely.