| SECTION |
Title |
Time |
| § 38.1 | § 38.1 Applicability. | July 24, 2026 (fm)
|
| § 38.3 | § 38.3 Definitions. | July 24, 2026 (fm)
|
| § 38.4 | § 38.4 Compatibility with airworthiness requirements. | July 24, 2026 (fm)
|
| § 38.5 | § 38.5 Exemptions. | July 24, 2026 (fm)
|
| § 38.7 | § 38.7 Incorporation by reference. | July 24, 2026 (fm)
|
| § 38.9 | § 38.9 Relationship to other regulations. | July 24, 2026 (fm)
|
| § 38.11 | § 38.11 Fuel efficiency metric. | July 24, 2026 (fm)
|
| § 38.13 | § 38.13 Specific air range. | July 24, 2026 (fm)
|
| § 38.15 | § 38.15 Reference geometric factor. | July 24, 2026 (fm)
|
| § 38.17 | § 38.17 Fuel efficiency limits. | July 24, 2026 (fm)
|
| § 38.19 | § 38.19 Change criteria. | July 24, 2026 (fm)
|
| § 38.21 | § 38.21 Approval before compliance testing. | July 24, 2026 (fm)
|
| § 38.23 | § 38.23 Manual information and limitations. | July 24, 2026 (fm)
|
| Appendix A | Appendix A to Part 38—Determination of Airplane Fuel Efficiency Metric Value
| July 24, 2026 (fm)
|