CFR > Title 40 > Chapter I > Subchapter C > Part 87 > § 87.31 40 CFR 87.31 – Exhaust emission standards for in-use engines Current as of: 2024 | Check for updates | Other versions Exhaust emission standards apply to in-use aircraft engines as described in 40 CFR 1031.60. Ask a legal question, get an answer ASAP!Click here to chat with a lawyer about your rights. Previous sectionNext section Part 87 Contents
