Very clear and concise - so clear that even a non-IFR rated pilot (moi) can get it. A little late to the party but I'd like to add this. If you had not yet established the heading that was initially given by ATC, after they issued instructions for you to continue on *present* heading, apart from disabling the NAV mode, would you also hit the heading dial to bring the heading bug around to present heading? TIA.
Great video. At 5:22 you want to go HDG, but if you press "HDG" you instead go "rol". So counter intuitively, you need to press "nav" to go "HDG".... what space monkey engineer thought this was a good idea??