Studi
I can see where you are coming from, but I do recall the story of (and the details are a little hazy - please feel free to correct me) an American Airlines DC10 getting very out of shape in the cruise. The captian had been flying a pitts special the previous day and when back safely on the ground having saved the day in the DC10 attributed the recovery on the aerobatic experience he had recently experienced.
This I believe happened in the 80's and was the causal factor in the then BAE Flight Training at Prestwick sticking there hand up for 10 FFA AS202 Bravo's for unusual attitude training. This was all at the request of British Airways who had provided BAE with the contract to train their ab initio cadets very much in the same way as the LH college operates now.
I appreciate your comments but on any given day pressing the direct button, highlighting the waypoint and pressing HOLD and the inbound track is not particularly difficult. I have no idea how an Airbus or Boeing FMS works and only have a little limited knowledge of my own but Im damn sure they wont work very well having had a cup of coffee accidentally poured into them......
It is then that this SP IFR experience gained when successfully operating under high pressure kicks in and pays dividends...
The above story may well be urban legend but there is no smoke without fire