[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR125.121]

[Page 580]
 
                     TITLE 14--AERONAUTICSAND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 125--CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING 
CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000
 POUNDS OR MORE; AND 
RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT--Table of Contents
 
              Subpart E--Special Airworthiness Requirements
 
Sec. 125.121  Proof of compliance with Sec. 125.119.

    Compliance with those provisions of Sec. 125.119 that refer to 
compartment accessibility, the entry of hazardous quantities of smoke or 
extinguishing agent into compartment occupied by the crew or passengers, 
and the dissipation of the extinguishing agent in Class ``C'' 
compartments must be shown by tests in flight. During these tests it 
must be shown that no inadvertent operation of smoke or fire detectors 
in other compartments within the airplane would occur as a result of 
fire contained in any one compartment, either during the time it is 
being extinguished, or thereafter, unless the extinguishing system 
floods those compartments simultaneously.