[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR91.821]

[Page 573]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 91_GENERAL OPERATING AND FLIGHT RULES--Table of Contents
 
                    Subpart I_Operating Noise Limits
 
Sec.  91.821  Civil supersonic airplanes: Noise limits.

    Except for Concorde airplanes having flight time before January 1, 
1980, no person may operate in the United States, a civil supersonic 
airplane that does not comply with Stage 2 noise limits of part 36 in 
effect on October 13, 1977, using applicable trade-off provisions.