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Thread: Old Timer's Airline Quiz and Discussion.
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Old May 4, 2014, 3:20 pm
  #4762  
jlemon
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Originally Posted by jrl767
this would most likely have been the DC-8 Series 50 with JT3D turbofan engines; their first deliveries were turbojet-powered Series 10s and Series 20s (some of which were later re-engined and redesignated)

I have flown on fan-powered N8007U and N8009U (both of which were built as Series 10), and on N8012U (Series 20) with the JT4A smoke and noise generators
47. According to a United Air Lines system timetable at the time.....

"The MARK IV is United Air Lines' designation of the advanced DC-8 model equipped with more powerful JT-4 turbofan engines."
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