The company suspended all operations in May 2012 following a fire on board its only aircraft.
And, for several years the only aircraft were modified B-29s.
The B-25 is the only American military aircraft named after a specific person.
At the moment, the 767 was the only aircraft on the base.
The Venture was the only aircraft they both designed and built.
The only other aircraft of this type had crashed two months earlier.
Designed in 1922, the only aircraft first flew on December 11 of that year, after which further development work stopped.
With the constructors number 501, it may have been the only aircraft built.
The C-17 is not the only aircraft the administration wants to stop building, but finds it cannot.
It was the only aircraft to participate in both missions.