Lear 70 I know its none of me business but are you sure his reasons for un-retirin are not entirley financial? I mean a 5yo kid, maybe a young wife (you older than your mom?)
A few old cogers I know joined Flight Safety to get back in the industry and be well paid too. Bein Stateside puts your old man at 1st base. No flying and lots of sim but the $$ are good and lots of OS work and hes in the industry again.
Just a sugestion.
Slash