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Old 07 January 2014, 10:27 PM
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GenYus234 GenYus234 is offline
Join Date: 02 August 2005
Location: Mesa, AZ
Posts: 26,457

Originally Posted by overyonder View Post
A DC9 is a DC9, and the plate on it is says so. The MD80 is a modified DC9 and it says MD80. They share quite a few parts and all, but it's still a different plane and requires "differences training".
You might want to read deeper into your own link. They offer differences training on lots of models of aircraft.

Also, the FAA thinks the DC-9 and the MD-80 line of aircraft are the same basic model as they all share one type certificate (pdf). Note that the first few "new models", are called DC-9-81 (MD-81), DC-9-82 (MD-82),DC-9-83 (MD-83), and DC-9-87 (MD-87).
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