GE's aero-engine facility at Nantgarw has axed hundreds of jobs while more than 100 posts are going at the Trefn aviation components - an Airbus supplier - at Llay near Wrexham.
It has been held back partly by the fact that the very long-range version has yet to be launched, because the three largest aero-engine makers have been reluctant to produce engines big enough to get it off the ground.