The correct term is MEF - Maximum Elevation Figures. Stupid mistake by me saying MSA, when I meant MEF!
I don't believe MSA is defined as being 1000 feet above the MEF. That is how some instructors teach, but others say 500 feet. Legally you could fly below the height of the obstacle, as long as you are at least 500 feet from it.
Last edited by wb9999; 8th May 2013 at 12:41.