[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: 14CFR25.303]

[Page 371]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 25_AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES--
Table of Contents
 
                           Subpart C_Structure
 
Sec.  25.303  Factor of safety.

    Unless otherwise specified, a factor of safety of 1.5 must be 
applied to the prescribed limit load which are considered external loads 
on the structure. When a loading condition is prescribed in terms of 
ultimate loads, a factor of safety need not be applied unless otherwise 
specified.

[Amdt. 25-23, 35 FR 5672, Apr. 8, 1970]