Your recollection is almost correct Mary. The Bicester accident was a Foka 4. If you google AAIB Bicester Foka you can find the AAIB report into the Bicester accident which describes in detail the rigging process and the potential for a mis-rig. I must say it put me off, and I much prefer the certainty of visual confirmation that the main pins are fully home, as is the case with most other types. I presume the 5 shares the same rigging arrangement as the 4 but I don't know for sure.