GroundRules
14 CFR 38.11: Fuel efficiency metric.
Where this section sits in the code
- Title 14—Aeronautics and Space
- CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
- SUBCHAPTER C—AIRCRAFT
- PART 38—AIRPLANE FUEL EFFICIENCY CERTIFICATION
- Subpart B—Determining Fuel Efficiency for Subsonic Airplanes
For each airplane subject to this part, or to determine whether a modification makes an airplane subject to this part under the change criteria of § 38.19, a fuel efficiency metric value must be calculated, using the following equation, rounded to three decimal places:
Where:
The SAR is determined in accordance with § 38.13, and the RGF is determined in accordance with § 38.15. The fuel efficiency metric value is expressed in units of kilograms of fuel consumed per kilometer.
Collected 2026-08-27T02:24:20Z. Source file · JSON