Since I know just about every inch of the area around Tatenhill, from teaching zillions of trial lessons, does memory count as 'sufficent nav data'. I honestly would like to know. Just to be safe, I always take my out-of-date chart with me.
But one thing I really, really, really would like an answer to is how I've managed to get back to the airfield every time....with no hairs whatsoever on my chest!!!!
