I've been looking at VFR Sectionals and learning about all the different air spaces, but my what I don't know is how, when flying, do you know you're approaching an air space that requires clearance from ATC to enter.

  • $\begingroup$ "It is always the responsibility of a pilot to know where they are and follow all applicable laws." so you just have to know. Fair enough. I did not find this question when looking but I would agree this is a duplicate. $\endgroup$ – Lady_A Apr 26 '19 at 19:20