Mortmeister, thanks again for an informative post, and a detailed one at that! So removing the bolt in situ predated the RTI, which however greatly increased the frequency of it.
It would be interesting to know if that was always the case, ie routine and non routine removal and replacement of the Headbox being done in situ, rather than in the then seat bays, dating all the way back to the 70's?
Your reminder of the reasons for non routine removal remind us of the real world of life on the line and rings particular bells with me, having had to clean out a JP cockpit after myself more times than most people have...well let's just not go there!
Again the reminder of how corporate knowledge; checking for free movement of the drogue line, leaving the seat actuator set to fully down, even perhaps the vital importance of only using an entirely new nut and bolt to re-secure the drogue shackle, and the critical importance of the correct position of the SPH and Pin, can be lost with cutbacks. More holes in more cheese slices?
Can anyone predate Mortmeister with their recollections of the when and where of headbox changes?