something got my attention guys!

when i climb in 727-100 with constant power setting, as i get higher, fuel flow reduces. Is that normal for 727-100 without any computers? Or it has one which adjust fuel flow?  what adjust FF and according to what it adjust it? (we dont have PMS on cs727-100 as i understand)

as i get higher EPR also increases (constant pwr setting) that should be right i guess.