[Code of Federal Regulations] [Title 14, Volume 1] [Revised as of January 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR31.23] [Page 728] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 31--AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS--Table of Contents Subpart C--Strength Requirements Sec. 31.23 Flight load factor. In determining limit load, the limit flight load factor must be at least 1.4.