Originally Posted by
DaveReidUK
Yes, it took place on 28th June 1968.
According to this source
Faithful Annie - the Avro Anson
the formation consisted of 5 C.19s and a single T.21, but I'm blowed if I can discern which one was the latter.
I think you will find the T21 was the C21 we had on Coastal Command Comm Flight. There were no external differences between the 19 and 21. However the 21 had an additional fuel tank inside the cabin, situated behind the main spar. I seem to remember it added about an extra hour to the endurance and had no fuel guage. On long flights from Bovingdon to Kinloss or even Edinburgh Turnhouse in a strong headwind we used to switch over to the cabin tank once in the cruise and use it until an engine started misfiring due to fuel starvation before rapidly switching back to the wing tanks.