All,
The thought comes to mind:
"There are old pilots and bold pilots, there are no old bold pilots"
And for a piece of enlightenment, the 500 series Aero Commanders ( at least) were originally certified in the utility category, but that changed with an AD, due to a little matter of wings parting company with the aeroplane, ( as the FAA so succinctly puts it: Leading to loss of control of the aircraft) roughly because of spar fatigue problems.
Tootle pip!!!