[Code of Federal Regulations] [Title 14, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR35.19] [Page 811] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 35_AIRWORTHINESS STANDARDS: PROPELLERS--Table of Contents Subpart B_Design and Construction Sec. 35.19 Durability. Each part of the propeller must be designed and constructed to minimize the development of any unsafe condition of the propeller between overhaul periods.