{"data":{"id":"us/40-cfr-1031.10","jurisdiction":"us","citation":"40 CFR 1031.10","heading":"State standards and controls.","body":"No State or political subdivision of a State may adopt or attempt to enforce any aircraft or aircraft engine standard with respect to emissions unless the standard is identical to a standard that applies to aircraft or aircraft engines under this part.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1031—CONTROL OF AIR POLLUTION FROM AIRCRAFT ENGINES","Subpart A—Scope and Applicability"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"459785085b7e31cedde75e0d7c9afd608f63bd54c238ce64de813960679d574c","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1031.5","next":"us/40-cfr-1031.15"},"notice":"GroundRules: Original legal text. Not legal advice."}