40 CFR § 87.31 Control of Air Pollution from Aircraft and Aircraft Engines

§ 87.31 Exhaust emission standards for in-use engines.

Current through Aug 22, 2025 · Read all of Part 87

Exhaust emission standards apply to in-use aircraft engines as described in 40 CFR 1031.60.

← § 87.23 Exhaust emission standards for Tier 6 and Tier 8 engines.§ 87.48 Derivative engines for emissions certification purposes. →