I don't hear Crab saying you have to get flight approval, he is suggesting if you discus the flight with someone else preferably without a vested interest in where & when you get there it will at least make you think & may be question your own decision, when I fly or sail we always tell someone our departure \ arrival time (wife, friend, whoever) & contact them on arrival or as soon as possible.
Have always done this for 60 years when sailing just seemed sensible to do same flying other than local flights, so far managed to survive nearly 80 years.