FME reads AIXM (it has a specific AIXM reader) so you should probably use that.Then you can extract the coordinates of features with the CoordinateExtractor transformer.From there you need to add a CSV writer,add some field definitions to it,and map your extracted coordinates to them.

Sounds like you might be a relatively new FME user.Please do feel free to make use of our support team (亚搏在线safe.com/support) or use the chat option on that page to talk to someone directly.