Sad to hear the news.
It seems when one gets to a certain age, all your old acquaintances seem to be heading for the hangar in the sky.
Checking my Logbook, I first flew with Bob in a Wessex 60 G-ATCA to the Leman Field out of North Denes on 25th July 1968. It was my first flight in a "civvie" Wessex although I had flown the Wessex V in the mob
RIP Bob and condolences to your family
JohnW