This has been great thread with many fond memories invoked even though I was not a BOAC crewmember.
Was wondering how you transitioned from the nav position to whatever came next in the 707-336B/C?
My experience was that we went from the Navs to dual Bendix Doppler backed up by an EDO 600 Loran A unit which the pilots were qualified to use. Almost every pilot had previous nav experience much as would seem to be the case at BOAC. As the airline kept adding crewmembers the lack of previous nav experience would come into play. I left the airline but I believe the Doppler and Loran was kept until the 707's were phased out. I know the Carousel lV was fitted in some airplanes as a trial in anticipation of the 747 entering service but for some reason I don't think it was a normal operational configuration?
So, did BOAC/BA keep the navs in place until the INS was fitted and certified in the 707, or did they go another route? If so what time period this eventually happen?