MM,
Whereas your point is very true now, it wasn't then. Then (of course) being at the beginning of the conversion process, back when they were converting the first few DC's to MD's. I thought I heard that the companys that repaired the DC-10 instrumentation, had either gone out of business, or had decided not to continue to support that repair function. That was part of the decision making that supported the conversion process in the first place, from what I understood. Could of course be wrong. It wouldn't be the first time.