Sav,
I only know that back then heli jobs were as rare as hens teeth, and this was one of several jobs dad had after leaving the navy before he got a real job with Bristow circa 1968.
Previous to that he was with Twyford moors.
RBA was the first company to bring in the Alouette to the british register, but the director of the firm, John somebody went bust after a few years.
Keep the thread going, its excellent
