From the linked site:
"The School of Aerospace Engineering offers two master of science (MS) degrees. The first is the "Master of Science in Aerospace Engineering" degree and is generally referred to as a "designated degree." The second is the "Master of Science" degree which is referred to as an "undesignated degree." The only difference between these two degrees is that the "designated degree" requires that the candidate must have completed all academic course work required for a Bachelor of Science in Aerospace Engineering degree. Refer to Appendix A for the courses required for the Bachelor of Science in Aerospace Engineering degree at Georgia Tech."
So they do award a MSAE degree.
I just exchanged emails with David, and he said that he was awarded a "MSc in Aerospace Engineering" from Georgia Tech.