The vignetting does look pretty bad but you should be able to fix most of that in post processing with DPP or Photoshop. Or, shoot a bit further back to allow for a bit of room to crop afterward.
Love those old DC-3's! Do you have any shots of the entire plane? Love to see those if you've got any!
The new girl looks great! You definitely seem to be working with some superior talent these days and they seem to be bringing out better work from you as a result of that...as in that last pose which was very nicely lit and framed! Keep up the good work!