Apart from the DC-1 and DC-4E prototypes, all the DC-* series is made up of types that were very successful from a commercial point of view.
If that were true, Douglas would still be around. I'm sure that the DC-9 series (including the MD airplanes except for the -95) made a boatload of money, but I doubt that any of their other jetliner programs did much better than break even and several were almost certainly big losses. Annual reports don't typically break out P/L by product line, so we're left to speculate, but:
Standard DC-8:
- According to the
The Road to the 707 by William Cook, the 707 didn't break even until 500 were built (as I recall). Douglas built 294 standard DC-8s.
- average price was probably similar to the 707 but costs were probably higher, since:
- it was developed in a big, probably very expensive, rush to catch Boeing
- Douglas had no USAF tanker program to share the costs (in addition to R&D, Boeing was able to use much of the same tooling on the 707 and KC-135)
- The original DC-8 wing section didn't work out and Douglas had to modify early aircraft with a new leading edge - that sort of thing is a financial sinkhole.
Super DC-8
- was selling well when Douglas pulled the plug at #262 to concentrate on the DC-10. If it was very profitable, I suspect a different decision would have been made.
- was built in a period when Douglas lost control of costs and suffered such a cash squeeze that they were forced into the MD merger.
DC-10
- L-1011 average price was probably somewhat less than the DC-10 as Lockheed was reentering the market and costs were probably higher due to starting up a commercial division and having to wait on RB211s.
- Nonetheless, Lockheed wrote off $2.5B USD when the TriStar was shut down after 252 examples. Granted, that write-down also covered the shut down of the airliner business, but TriStars were 100% of the product line. Let's be charitable, and speculate that the DC-10 was only $1B in the red after the first 252 examples. Could they have made that back on the remaining 194 examples? Competing against 767s and A310s? Remember the DC-10 never really shook off the taint of several accidents and a grounding - this may have something to do with retiring the DC designation in favor of MD.
- I recall that when the USAF selected the KC-10 in 1977, one of the justifications was that it would keep MDD in the airliner business.
MD-11
- During it's production run, MDD collapsed into the arms of Boeing, who pulled the plug after #200.
- initially failed to meet range guarantees, prompting loud complaints from American Airlines, perhaps others, and a modification program.
Perhaps a Douglas alumni can weigh in, but I doubt that DC/MD jets as a whole made much money.