CFR > Title 40 > Chapter I > Subchapter U > Part 1030 > Subsonic Airplane Emission Standards and Measurement Procedures CFR > Title 40 > Chapter I > Subchapter U > Part 1030 > Subsonic Airplane Emission Standards and Measurement Procedures Current as of: 2024 | Check for updates | Other versions § 1030.20 Fuel efficiency metric § 1030.23 Specific air range (SAR) § 1030.25 Reference geometric factor (RGF) § 1030.30 GHG emission standards § 1030.35 Change criteria § 1030.98 Confidential information