Thanks AA62 and Brian....
Obviously I have no idea what Mel was like as a boss, but as a member of staff at our local ATC unit he was someone to really look up to. At that time he'd recently returned to the UK after flying the B707 for Royal Jordanian.
Sadly he passed away a few years ago, but I still have fond memories of doing aeros with him in an AEF Chipmunk over the Norfolk coast when we summer camped at Coltishall.
AA62, re the Westabout to McClellan - I guess flight time limitations in those days were more liberal in the late 1960's?