The gotcha pin-in-SFH-out (position 2 in the SI) was not only known about, but highlighted and emphasised to us at each and every briefing.
I find it rather staggering that knowledge of this rather fundamental feature of such a widespread seat has seemingly been lost over time.
If I recall from the SI, they did tests with pilots who were not informed of what the test was about and they did not realise when they inserted the pin into a position 2 SPH.
This surely suggests that all current hawk/Mk10 users are (or were upto SI) unaware of this risk/issue - it has been institutionally forgotten.
I'd like to know if any recall if it was originally written down - you could expect something in the tech pubs - and if so if somehow this has been deleted through updates, or perhaps through changes in training courses?