-11 also had two engine options from the start (GE and PW
). The DC-10 only offered the GE
CF6 engine for the Series 10 (CF6-6), Series 15 (downrated CF6-50) and Series 30 (CF6-50), and Pratt & Whitney JT9D engines for the Series 40. On the MD
-11, the MD
-11, in any variant, was available with GE
CF6-80 engines or with Pratt & Whitney PW4400 Series engines. There was also a plan to make a Rolls Royce Trent 700 powered MD
-11. There was a customer for that aircraft, Air Europe, but eventually the RR
model never happened.
Feel free to correct me if I'm wrong.