40 CFR § 87.20 - Applicability—exhaust emissions.
§ 87.20 Applicability—exhaust emissions.
Exhaust emission standards apply to certain aircraft engines as described in 40 CFR 1031.40 through 1031.90.
Exhaust emission standards apply to certain aircraft engines as described in 40 CFR 1031.40 through 1031.90.