BEags, JF
I did TWU at Chiv in 1983 when the fleet was mixed - I guess about a third of the jets had AHRS at that time. The training value conferred by this circumstance was beyond measure.
No, I am not referring to the level of skill that we all acquired in low level navigation with a compass that didn't work in turns (or at all, after you had done the first couple) - banging a six-inch nail into the coaming to use as a sundial, combined with even an RAF issue aircrew watch, would probably have made a better navigation aid!
I mean the equally valuable skill imparted to the abo pilots in 'negotiating' with the groundcrew for an AHRS jet! Much beer changed hands, to be sure.
Gadget 