Partial results of the annual AIN FBO Survey appear in AIN's Aviation Industry Expo supplement being distributed this week in Las Vegas at the annual meetings for the National Air Transportation Association, Professional Aviation Maintenance Association and ground support equipment suppliers. The full FBO survey story will appear in the April issue of AIN. Topping the list for the sixth time in a row is Wilson Air Center, Memphis, Tenn., followed by Regal Aviation, Dallas, and AirFlite/Avitat, Long Beach, Calif. Dallas's Business Jet Center also joined the top five, along with Tampa International Jet Center. Mexican FBOs are gaining in stature, with Manny Aviation ranked eighth and Avemex moving from 23rd last year to 16th. AIN readers rated 782 FBOs in the Americas.