VmU:
as 411A mentioned earlier, the L-1011 had a most noticeable "step", at around .86M. The FE's used to love demo-ing it with the appropriate power setting, and it would cruise there with no noticeable slowing-down for ages, at the same FF as LRC. Had me baffled....I thought it was a wive's tale...
There was an interesting discourse on this in "Flying" recently, in a column by Peter Garrison. Someone from Edwards AFB sent in part of the a/c handling notes from the B-50 (B-29), describing in great detail how to get the a/c to cruise on the "step".
