[Code of Federal Regulations] [Title 14, Volume 2] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR137.31] [Page 1192] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 137_AGRICULTURAL AIRCRAFT OPERATIONS--Table of Contents Subpart C_Operating Rules Sec. 137.31 Aircraft requirements. No person may operate an aircraft unless that aircraft-- (a) Meets the requirements of Sec. 137.19(d); and (b) Is equipped with a suitable and properly installed shoulder harness for use by each pilot.