US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 87 — CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES87.240 C.F.R. § 87.2Abbreviations.Last amended: 2022Year: 2026Length: 8 wordsOfficial source Cite as 40 C.F.R. § 87.2 (2026)Abbreviations apply as described in 40 CFR 1031.200.Cross-references to the CFR40:1031.200.Previous40 C.F.R. § 87.1Next40 C.F.R. § 87.3