[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: 14CFR31.37]

[Page 765]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 31_AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS--Table of Contents
 
                      Subpart D_Design Construction
 
Sec.  31.37  Fastenings.

    Only approved bolts, pins, screws, and rivets may be used in the 
structure. Approved locking devices or methods must be used for all 
these bolts, pins, and screws, unless the installation is shown to be 
free from vibration. Self-locking nuts may not be used on bolts that are 
subject to rotation in service.