Originally Posted by
hans brinker
AFAIK the DC9 and the B717 are the same type certificate, but
the FAA denied Fokker the same for the F27 and the F50. Type Certificate doesn't mean as much as it should.
No. you're wrong, I'm afraid. The Fokker 50 (alias F27 Mark 050) was most certainly added 30 years later to the original 1957 F27 Type Certificate.