It seems, that from time to time online, when some of the pilots and aviation enthusiasts complained about the decline of GA or over regulation from the FAA, they mentioned that the FAA's mission is to regulate and promote aviation. Now today, the FAA's mission changed to "provide the safest, most efficient aerospace system in the world." Nowhere in the language did you see the words "promote aviation". The fact is the FAA USED to have the language, "promote aviation" in their mission, but not anymore. I learned this in one of my aviation classes in college that they took that language out because of a certain accident (I cannot remember the specific accident though) where the FAA was in conflict with regulating and promoting aviation at the same time. So they took that language out of their mission. So whenever there is discussion about the decline of GA or over-regulation from the FAA, keep in mind that they took the "promote aviation" language out from their mission.