Better ideas, anyone?
“… also for turning up something that hasn’t been properly understood before …”
Like the Lightning gear collapse during landing attributed to a structural vibration (resonant frequency) which momentarily moved the mechanical portion of the electo-mechanical valve? This, IIRC, involved a very few events on one variant type, but was a rarity without logical explanation.
Are there any interesting vibrations, system selections, or characteristics which could contribute to such a theory during an approach in a 777?
If so then presumably with structural considerations, there might be an enormous combination of weight, cg, configuration, speed, turbulence, control input, intersystem activity, etc that might account for the apparent rarity of this event.