Md-80 #909
"Wasn't #909 the one McDD used in the uncowled fan testing, and eventually got filleted due to being ever so slightly bent (like the VC-10 used for the RB211 program)?"
Ooh, I had forgotten the UDF, or Unducted Fan. It sure made a distinctive noise going over my house at 2K feet on the approach to KLGB. Somehow, I had the UDF tied to Alaska Airlines, as it being on one of their planes, leased back. Memories fade...
There was an emergency AD sometime after the 909 crash, in which they found cracks like the beginning of the 909 break. One inservice airplane had a crack near two feet long, IIRC.
GB