The discontinuing of HIWAS follows a proposal released in July 2018, where the agency requested public comment. The comment period ended on August 22, 2018. 27 comments were submitted. “A number of commenters, including the Aircraft Owners and Pilots Association (AOPA), cited safety concerns with the removal of this service because pilots may unexpectedly encounter hazardous weather and have no other means to obtain the information,” the notice said. Moreover, AOPA raised concerns that HIWAS might be the only way for some pilots to receive adverse weather information enroute. The FAA said the implementation of FIS-B and the availability of FSS for pilots who don’t otherwise have access to weather enroute would be sufficient for pilots requiring such services.