Lightning does strike twice
Remarkably, the "lightning strike" issue has already been covered on the ten o'clock(ish) BBC or ITV news a few weeks back. It's important: lightning strikes are remarkably frequent up there, and the aircraft structure has to be able to easily survive them. With all-metal structures it's tried tested and proven (albeit not necessarily *easy*). With composites? Who knows, and in particular who knows after a couple of years in service. The snippet of lightning-strike-related film showing the after effects on an allegedly relevant piece of composite didn't look too good for Boeing.
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