I am not a pro, but I would guess that scenarios are quite different when it comes to trouble-shooting if a commercial pilot is in charge and the aircraft is operated on a day-to-day-basis or if, as in the case in question, the pilot was more or less a hobby pilot and the aircraft is a little-used personal steed (my understanding is that the aircraft sat on the gorund for quite some time in Spain while the family was holidaying there).
Interesting that the the pilot was confident enough to fly around his family as a single-pilot - he was, from what I can tell, well into his 70s and we are not talking about a Piper Cub here.. .