[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR31.51]

[Page 755]
 
                     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. 31.51  Ballast.

    Each captive gas balloon must have a means for the safe storage and 
controlled release of ballast. The ballast must consist of material 
that, if released during flight, is not hazardous to persons on the 
ground.