The letters are a lot bigger than they may look. Takes about 20 minutes to do each of them.
Yeah the tight turns are tight, but not as much as it looks. If he really did have to maintain a constant RPM all the time (which I doubt), then those would be 2G turns. I do not recall the DA-40 being certified for any kind of aerobatic flight, so that's the only option I can think of. In reality, the wide arcs on B, O, R and D are much more difficult to fly as those are not turn radii that we commonly use.
Biting the hand that feeds IT
