- Member, Advisory Board, Integrated Marine Observing System
- Commissioner of the International Air Services Commission (IASC).
- Expert Advisor, National Coded Practice on Workplace Bullying, Safework Australia.
- Member, Flight Training Panel, CASA, 2008 - 2010
The Flight Training Panel comprises members from both industry and the Civil Aviation Safety Authority (CASA). It's purpose is to provide advice and a high-level link between the flying training industry and the authority. Horton was one of the five industry members from February 2008 until August 2010. Horton also served on the industry advisory committee formed to advise CASA on the establishment of the Flight Training and Testing Office as one of three industry members. That Committee met regularly from January 2008 until mid 2009.