CP
The U2 was based at Sale during the early 60s' and doing upper atmospheric air research over Southern Ocean, so their flight route took them over Tassis.
I remember as a kid seeing the contrail from them heading south over Hobart. This at a time when the most sophisticated thing flying here was either a Viscount or an Electra.
Also remember seeing some TV footage (therefore post 1961) of one of them landing at Sale after one of these trips. Fascinated by the thing and especially the outriggers on the wingtips.
Gawd help me I'm getting old. Yes nurse, I'll take the tablets now.
