[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: 14CFR34.60]



[Page 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 G_Test Procedures for Engine Exhaust Gaseous Emissions (Aircraft 

                    and Aircraft Gas Turbine Engines)

 

Sec. 34.60  Introduction.





    (a) Except as provided under Sec. 34.5, the procedures described in 

this subpart shall constitute the test program used to determine the 

conformity of new aircraft gas turbine engines with the applicable 

standards set forth in this part.

    (b) The test consists of operating the engine at prescribed power 

settings on an engine dynamometer (for engines producing primarily shaft 

power) or thrust measuring test stand (for engines producing primarily 

thrust). The exhaust gases generated during engine operation must be 

sampled continuously for specific component analysis through the 

analytical train.

    (c) The exhaust emission test is designed to measure concentrations 

of hydrocarbons, carbon monoxide, carbon dioxide, and oxides of 

nitrogen, and to determine mass emissions through calculations during a 

simulated aircraft landing-takeoff cycle (LTO). The LTO cycle is based 

on time in mode data during high activity periods at major airports. The 

test for propulsion engines consists of at least the following four 

modes of engine operation: taxi/idle, takeoff, climbout, and approach. 

The mass emission for the modes are combined to yield the reported 

values.

    (d) When an engine is tested for exhaust emissions on an engine 

dynamometer or test stand, the complete engine (with all accessories 

which might reasonably be expected to influence emissions to the 

atmosphere installed and functioning), shall be used if not otherwise 

prohibited by Sec. 34.62(a)(2). Use of service air bleed and shaft 

power extraction to power auxiliary, gearbox-mounted components required 

to drive aircraft systems is not permitted.

    (e) Other gaseous emissions measurement systems may be used if shown 

to yield equivalent results and if approved in advance by the 

Administrator or the Administrator of the EPA.



[Doc. No. 25613, 55 FR 32861, Aug. 10, 1990, as amended by Amdt. 34-3, 

64 FR 5559, Feb. 3, 1999]