cliver029,
I'm as certain as can be that the BE trooper went to Paya Lebar civilian airport.
As to interim stops outbound and inbound, these did vary from time to time. I did the BE trooper bit several times in 1965-6, mainly because the air force couldn't make up its mind if I was to be detached to a far east station or actually posted there. Eventually, they decided I was there to stay! I visited Istambul, Abadan, Bombay, and Negombo in various permutations.
As to the three engined bit, one day between Singapore and Hong Kong and with one engine shut down, they lost one for real. It was quite exciting for a few minutes but Captain Speaking and First Officer Here sorted it out and we carried on our way. At that stage in the flight, probably the nearest diversion was Hanoi!
Old Duffer