Fuel burn of JT8D-9 powered 732
I have been hunting high and low for charts online about fuel burn for the Boeing 737-200-9. I can't find anything.
Sure Boeing.com has range performance charts and yes Chris Brady's 737.org has stuff about the -7 powered and -17 powered 732, but nothing in between.
The -17 powered 732 had an econ cruise of 4,440kg/hr and the -7 powered aircraft had an econ cruise burn of 3,200kg/hr, but please can someone put me out of my misery over the -9 (or 9A) version.
Incidentally what is the difference -9 v -9A ?
Is there a rule of thumb also about fuel burned climbing to altitude ?
Please go easy with me. I'm just a PPL (I snuck in the back door)