I operate a small fleet of DC-9s. Because the MD-80 is part of the DC-9 "family" I expected these planes to share an MB cost with with the DC-9s. Rather, I have two maintenance base costs coming through--one for the "Douglas" DC-9s and one for the "McDonnell Douglas" DC-9s.
Is this an oversight? Or will I get hit with two charges as well for the Douglas DC-10 and the McDonnell Douglas MD-11, both "DC-10 Family" aircraft?