Thanks Ken . I need complete pohs to compare flight performance at high pressure altitudes.
Only the designers of each aircraft have that data. You MAY be able to extract the data you are seeking from the performance graphs in the flight manuals of each aircraft. The C-27J has a USAF Tech Order. See if you can get the dash 1 flight manual, or better yet, the dash 1 dash 1 performance data manual. (TO 1C-27J-1 and TO 1C-27J-1-1) They may be available on-line. I believe the Coast Guard bought some C-295s, so those flight manuals should also be available.