Is it possible to permanently install a small mirror to the aft face of the control column, such that the seat occupant would be able to view the correct installation of the pin, moving the column as required to optimise the viewing angle?
Use an inspection mirror on the A/F and B/F, or motor the seat to the correct (non Red Arrow) position.
By the way what does the the A/F and B/F documentation say for the tradesmen checking the ejection seat. Gets no mention in SI. Perhaps it is another piece of paperwork that has gone missing, or never updated.
DV