On June 13, 2006, the FAA released a Notice of Proposed Rulemaking for FAR Part 77, which concerns obstructions and hazards around airports. This is the first major rewrite of Part 77 in decades. It would completely reorganize the regulation and make many important changes to, for example, the deadline for filing FAA Form 7460-1, the types of structures for which notice is required, obstruction standards, and the content of aeronautical studies. The proposed rule also would address electromagnetic interference for the first time. Comments are due by September 11, 2006.