NoD - agreed, but it seems to me as a complete outsider that there's a big list of things which need to be checked, all of which are mission critical, and so they all need to be checked, not just some of them
Ummm... well let's start by pointing out that the walkround check is, by definition, limited to things that can be reached / seen by someone the height of whoever is doing the walkround, not opening any panels, nor allowed any tools except a torch. I would suggest that covers <5% of the "mission critical" items
