Originally Posted by PJ2
The AOM doesn't have cruise performance charts for anything other than ISA and the Optimum weight for 4000ft step climb has ISA+10 and ISA+20.
- somewhere in the dark dungeons of this thread someone posted a graphic carpet graph with ISA deviation for a 330. Don't have tiime to search for it at the moment. I seem to recall that I later posted "ISA+17" as a possible problem area at that weight. Whether it was the 'step climb' carpet or not I cannot remember.