DJ77;
As far as I know, GE-CF6 and GE90 series always used N1 as driving parameter.
Also, Nara is a medium size town abt 15 miles east of Osaka, jpn. This looks like a typo for Naha.
Yes, you're right, thank you, and the Trents are EPR, I recall now.
I found the town of Nara but was thinking of the name of the FIR. The "Naha" typo is immaterial now I suppose.