title_body: Where can I find a list of all the model aircraft flying fields in the USA? Is there a comprehensive list of model flying fields that have operated or have been developed in the United States?  I assume the AMA has some of this data, but I am curious if there is a larger list that designates all places to fly both past and present?  Present is fine if past is too big an ask.
upvoted_answer: Does not exist, a few reasons.
  
  AMA lists most of their fields, but that information is spotty and I have almost been arrested trying to fly at listed AMA sites that are not valid.
  FAA has this list, but they have openly admitted that infrastructure and management problems have led to this data being in decay and not very useful.  This problem was exposed as 107 was coming into law and many commercial pilots raised a stink because airports on flight maps were never (EVER) updated, this led to LAANC and the apps becoming more of an authority.
  No one shares spots. There have been several apps that try to get people to share and they all went belly up real fast.
  
  This information ALL exists in the FAA, but their data is horrible (I work with this info, total nightmare).  Most of the good fields are private and invite only in my world. We run a few spots and you will be shot dead if you fly there with out permission (not an exaggeration, I often carry when flying).
  Airmap and Kittyhawk will have reasonably good current AMA type fields.  That data is the best for &quot;free&quot;.  You may want to check with Snowflake, but their data feed (last time I was involved) starts at $5k/year.
  It should be noted that the FAAn NTSB, FBI, and other orgs all recognize the unstructured, uncoordinated, and non-unified nature of RC flight and use this to control airspace.  I mention this because there is considerable history on the record of the FAA trying to wipe all drone use from NAS and this is a declared strategy and we have seen it in action.  Dig into the DC restrictions of 2014-15 to understand why the FAA is an advisory and not an ally.