I should point out that these are NOT approved by the FAA as your sole means of information so you should be cross referencing them with the certified FAA charts, but these are an absolute must in the cockpit in my opinion. They make managing your workload as a pilot a heck of a lot easier when in VFR flight. kneeboard_skysectional For those of us who fly Search and Rescue, cockpit management becomes even more critical as we need to know precisely what grid we are in and searching.