Originally Posted by
tdracer
In the mid 1970s, Boeing was all set to launch a 727-300 program, using a re-fanned JT8D-200. United was to be the launch customer. But right before the planned launch announcement United suddenly got cold feet and pulled out and the program was quietly shelved. However the engine was eventually used for the MD-80.
There were of course some 60 or so 727s, mostly -200s, that were partially re-engined with the re-fanned JT8D-217/-219 (the centre engine remained the original one as there wasn't enough room in the bay).
There are a dozen or so still flying, whereas the Tay 727QFs are all long gone.