One thing has often puzzled me.
In the FMC (757 w/ or w/o Pegasus), when LRC is selected there is a very little difference in speed and predicted arrival fuel, apart from ECON CRZ. When, however, cost index is set zero (fuel most expensive part of the formula) the range increases significally in ECON.
I always thought LRC meant long range! Why could this be, and what is LRC according to the programmers of our software?
MasterBates.
