Versions of 40 CFR 1031.60 - Subsonic turbojet and turbofan engines above 26.7 kN thrust on LawServer 2024 40 CFR 1031.60 – Subsonic turbojet and turbofan engines above 26.7 kN thrust 2023 40 CFR 1031.60 – Subsonic turbojet and turbofan engines above 26.7 kN thrust