reddog,

Is there any data to support the actual savings of fuel at the heavier weights? Is there a published report where two planes at identical weights travel the same taxi route and show the difference between fuel used? What I see in ATL during my commutes is a lot of high power settings during breakaway, acceleration and during uphill taxi segments. Then there's the high power settings during crossbleed start. I've never seen an actual side by side comparison.

Carl