JPs at Cranwell in the 80s, when dual you’d put each others Face-screen Handle pin in
What a bizarre procedure! When I flew the JP, we would
never try to replace the face screen pin after landing until on chocks and vacating after unstrapping. Seat pan and guillotine pins yes, but that was all.
To have someone fiddling over your face screen handle fumbling with the pin seems very dangerous - and why have a different procedure when dual to that when solo?