[Code of Federal Regulations]

[Title 14, Volume 1]

[Revised as of January 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 14CFR31.33]



[Page 762]

 

                     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. 31.33  Materials.



    (a) The suitability and durability of all materials must be 

established on the basis of experience or tests. Materials must conform 

to approved specifications that will ensure that they have the strength 

and other properties assumed in the design data.

    (b) Material strength properties must be based on enough tests of 

material conforming to specifications so as to establish design values 

on a statistical basis.