[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR125.155]

[Page 993]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
 PART 125_CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 
 
              Subpart E_Special Airworthiness Requirements
 
Sec. 125.155  Shutoff means.

    (a) Each engine must have a means for shutting off or otherwise 
preventing hazardous amounts of fuel, oil, deicer, and other flammable 
fluids from flowing into, within, or through any designated fire zone. 
However, means need not be provided to shut off flow in lines that are 
an integral part of an engine.
    (b) The shutoff means must allow an emergency operating sequence 
that is compatible with the emergency operation of other equipment, such 
as feathering the propeller, to facilitate rapid and effective control 
of fires.
    (c) Shutoff means must be located outside of designated fire zones, 
unless equivalent safety is provided, and it must be shown that no 
hazardous amount of flammable fluid will drain into any designated fire 
zone after a shutoff.
    (d) Adequate provisions must be made to guard against inadvertent 
operation of the shutoff means and to make it possible for the crew to 
reopen the shutoff means after it has been closed.