Originally Posted by
jmelson
The E3 is supposed to be built on a 717 frame, but to the untrained eye, I could not spot the difference.
If it had been built on the 717 frame, you would certainly be able to tell the difference.
The (original) Boeing 717 was the model designation for initial variants of the C-135/KC-135 Stratolifter/Stratotanker. The E-3 is based on the 707.