Can a 777X legally be ferried with one or both wingtips folded? The 777X family (777-8/-9/-10) features wingtips that fold up on the ground to let the aircraft fit in tight spaces. These have to be extended and locked in place before a revenue flight can take place, but can a 777X legally be ferried with one or both wingtips in the folded position - for instance, if one of the wingtips is jammed in the up position while at some backcountry airport that doesn't have maintenance facilities for a 777?

For the purposes of this question, I'm assuming that it's physically possible to operate the aircraft. The non-folding part is the same length as the wing of a regular 777, so it would still be able to take off safely, just with considerable performance penalties compared to normal, wingtips-folded-down flight. Ferry flights for maintenance purposes can get away with a lot that wouldn't be allowed during line operations (for instance, multi-engine jetliners can be ferried with one engine - or, for quadjets, two - inoperative, and the 747-400 can be ferried with one of its winglets broken off).
As Ron notes in the comments to another answer this is a perfect situation for a Ferry Permit/Special Flight Permit. The FAA via your local FSDO can authorize aircraft to fly for the purpose of being fixed elsewhere via a ferry permit. This question covers whats needed for that.

However in some cases it may be cheaper to fly (or drive) in a maintenance team and fix it on site. Moving an empty 777 even short distances means burning quite a bit of Jet-A. For the cost of the reposition it may just be cheaper to send a team (possibly in car) with the parts and tools they need to get the job done. 

On a similar note its likely that the majority of fields big enough for a 777 to touch down have at least some form of maintenance on hand. Again it may be cheaper for an airline to contract the job to a local shop than bother with the ferry logistics and costs.  

Boeing also offers these services if you should need them in a pinch as part of the AOG services. 


  Our technical experts will provide on-site, comprehensive and
  integrated assistance to recover an airplane. Our goal is to quickly
  and safely return airplanes to service, using methods and procedures
  that avoid costly secondary damage.


From what I can tell they will basically show up with parts and people to get the plane back in the air just about anywhere you can fly it out of.