Regulations last checked for updates: Feb 10, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
All TitlesTitle 40Chapter IPart 87 - PART 87—CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES
View all text of Part 87 [§ 87.1 - § 87.60]
§ 87.1 - Definitions.

Definitions apply as described in 40 CFR 1031.205.

authority: 42 U.S.C. 7401
source: 87 FR 72350, Nov. 23, 2022, unless otherwise noted.
cite as: 40 CFR 87.1
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