We operate a Lear 35 and 55 and I would like to find out if other operators have any kind of a program or spread sheet for Efficiency operations with altitude and fuel flow.

AFM, POH, Tab data (LRC & High speed cruise) from the fight safety checklist. The Lear's seam to have more fuel burn info easily available than most jets I've flown. The 55 may not have as much tab data as the 35.

I better look at my SIMCOM book