40 CFR Part 87 — Control of Air Pollution from Aircraft and Aircraft Engines

PART 87—CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES Authority: 42 U.S.C. 7401 et seq. Source: 87 FR 72350, Nov. 23, 2022, unless otherwise noted. § 87.1 Definitions. Definitions apply as described in 40 CFR 1031.205. § 87.2 Abbreviations. Abbreviations apply as described in 40 CFR 1031.200. § 87.3 General applicability and requirements. Provisions related to the general applicability and requirements of aircraft engine standards apply as described in 40 CFR 1031.1. § 87.10 Applicability—fuel venting. Fuel venting standards apply to certain aircraft engines as described in 40 CFR 1031.30(b). § 87.11 Standard for fuel venting emissions. Fuel venting standard apply as described in 40 CFR 1031.30(b). § 87.20 Applicability—exhaust emissions. Exhaust emission standards apply to certain aircraft engines as described in 40 CFR 1031.40 through 1031.90. § 87.21 Exhaust emission standards for Tier 4 and earlier engines. Exhaust emission standards apply to new aircraft engines as described in 40 CFR 1031.40 through 1031.90. § 87.23 Exhaust emission standards for Tier 6 and Tier 8 engines. Exhaust emission standards apply to new aircraft engines as follows: (a) New turboprop aircraft engine standards apply as described in 40 CFR 1031.40. (b) New supersonic engine standards apply as described in 40 CFR 1031.90. (c) New subsonic turbofan or turbojet aircraft engine standards apply as follows: (1) Standards for engines with rated output at or below 26.7 kN thrust apply as described in 40 CFR 1031.50. (2) Standards for engines with rated output above 26.7 kN thrust apply as described in 40 CFR 1031.60. (d) NO X § 87.31 Exhaust emission standards for in-use engines. Exhaust emission standards apply to in-use aircraft engines as described in 40 CFR 1031.60. § 87.48 Derivative engines for emissions certification purposes. Provisions related to derivative engines for emissions certification purposes apply as described in 40 CFR 1031.130. § 87.50 Exemptions and exceptions. Provisions related to exceptions apply as described in 40 CFR 1031.20. Provisions related to exemptions apply as described in 40 CFR 1031.10. § 87.60 Testing engines. Test procedures for measuring gaseous emissions and smoke number apply as described in 40 CFR 1031.140.

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