TC, only scheduled Pt.121 operations are affected by the age limit in the USA.
Unscheduled Pt.135 operations do not follow that rule and even less Part 91 operations like the one of this accident if I understand that the 206B was in fact the family's helicopter and "Jerry" had been flying them for over twenty years.
Gullibell, it used to be that whatever airframe you used for your FAA ATP ride would show on your certificate forever, mine says HU-269 back since '96.