Walter, you make many good points, but by the same token you wish to junk the good points others have made because they do not accord with your scenario. What you call a lack of focus I would call keeping an open mind. A really serious compromise to the airworthiness of the aircraft as has been described by Winch Control regarding the delaminating of the control palette the day before may or may not have been a factor on the final flight of ZD576 and needs to be considered. Indeed it could possibly even accord with your scenario of an intended landing at the Mull LZ causing a loss of control during that approach, could it not? It seems to me as one who suspects that the airworthiness of the aircraft could be the smoking gun that one is spoilt for choice with so many likely candidates, be they DECU code and/or connectors, detached springs or delaminated control palettes, hydraulic fluid contaminated with metal particles, etc etc. In that respect you are right to complain of lack of focus. Ignoring all those possibilities does not entail a renewed focus but myopia.