I am an active ATP and CFII. My July issue just arrived and I spotted the article, "GPS Alphabet Soup." The timing is perfect as I am presenting an FAA Wings Seminar this evening on RNAV approaches. I want to thank you for the depth of information you provided in the article. It will add to what I am presenting. Many thanks for an excellent article, as I try to keep up with all of this! Fred Simonds' excellent article on the various GPS approach types was very illustrative. But it raises a question. What constitutes a precision, versus nonprecision approach? It was always my understanding, from the 2007 FAA Instrument Procedures handbook, that LPV approaches were considered nonprecision, despite the fact that they have similar performance capabilities as the ILS approach.
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