^^^ to
UNITED959 for a great thread.
Curiously I was on a recent B757 in F, and the empower was not active. I overheard a px inquire about it to one of the FA's and her reply was,
"some of the planes had the EmPower disabled after 9/11".
Methinks she just didn't know how to turn it on as was mentioned in the OP.
Craig