[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: 14CFR34.31]



[Page 804-805]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

 

PART 34_FUEL VENTING AND EXHAUST EMISSION REQUIREMENTS FOR TURBINE 

ENGINE POWERED AIRPLANES--Table of Contents

 

    Subpart D_Exhaust Emissions (In-use Aircraft Gas Turbine Engines)

 

Sec. 34.31  Standards for exhaust emissions.



    (a) Exhaust emissions of smoke from each in-use aircraft gas turbine 

engine of Class T8, beginning February 1, 1974, shall not exceed a smoke 

number (SN) of 30.

    (b) Exhaust emissions of smoke from each in-use aircraft gas turbine 

engine of Class TF and of rated output of 129



[[Page 805]]



kilonewtons (29,000 pounds) thrust or greater, beginning January l, 

1976, shall not exceed



SN=83.6(rO)-0.274 (rO is in kilonewtons).



    (c) The standards set forth in paragraphs (a) and (b) of this 

section refer to exhaust smoke emissions emitted during operations of 

the engine as specified in the applicable section of subpart H of this 

part, and measured and calculated in accordance with the procedure set 

forth in this subpart.



Subparts E-F [Reserved]