U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
For tiltrotors, the noise generated must be measured and evaluated under Appendix K of this part, or under an approved equivalent procedure.
Regulations most recently checked for updates: Aug 27, 2025
For tiltrotors, the noise generated must be measured and evaluated under Appendix K of this part, or under an approved equivalent procedure.