This is off a facebook post by HAV:
"We're delighted to announce further progress on the re-assembly of Airlander. We're now attaching "hard structure" to the aircraft. As this photo shows, the battens have been fixed to the rear lobe of the hull, ready to attach the first of the rear engines in a couple of weeks time. The battens, made of carbon composites, provide the rigidity and strength that is needed for the engine to fit onto the very end of the Airlander.
Lots of activity in the Hangar all the time - and we'll be continuing the work throughout the Christmas and New Year period, so only a short break for us here. But having an Airlander with a reasonable amount of the hard structure (meaning fins, engines etc) on by Christmas will be a great present for all of us and, hopefully, all of our supporters."