A coalition of 28 public interest groups led by the Arizona-based Center for Biological Diversity sent a letter to the FAA asking the agency to refrain from removing the ban on overland supersonic flight or supporting rulemaking that might lead to the revival of supersonic aircraft on Tuesday. According to the Center for Biological Diversity, the letter comes in response to the FAA’s move to update authorization procedures for supersonic test flights over land in the U.S. The letter (PDF) cites climate damage, air pollution, and noise as the primary reasons to for the groups’ opposition to supersonic flight.
This is a companion discussion topic for the original entry at https://www.avweb.com/flight-safety/faa-regs/groups-urge-faa-to-block-supersonic-aircraft