4 different aircraft! I've had enough with just the 88 and the 90. I won't have to worry about it for awhile but what does the 7E stand for?
7ER.
As in 767-300ER.
The ER means Extended Range.
Every category calls their plane by the largest version (73-800, A320, ER, etc) except the MD88/90 which goes respectfully by the smaller plane out of pride, humility and maybe a little fear.