Ironbutt! Thanks for your comments-- was starting to think that I was the only person that had seen these-- what I am looking for is a "preface" to these charts. My company seems not to have much expanded info on them and emailing Flygprestanda produced absolutely no results! Have you access to any notes or decodes for some of the more obscure details? I struck a situation recently where operating out of a tricky airport in Nth Scandinavia-- lots of obstacles-- and the Bleeds Off correction was nil! Can't see how that could be true??
For those who have never seen these charts- quite different from the usual Jeppeson type (Single Flap config) charts-- have a look here.
Optimised Takeoff Perf