Proposed Advisory Circular 34-1, Fuel Venting and Exhaust Emissions Requirements for Turbine Engine Powered Airplanes

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

Proposed Advisory Circular 34-1, Fuel Venting and Exhaust

Emissions Requirements for Turbine Engine Powered Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice.

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SUMMARY: This notice invites public comment on a proposed Advisory

Circular that provides guidance for implementing the fuel venting and

exhaust emission requirements for turbine engine powered airplanes.

DATES: Comments must be received on or before December 1, 1998.

ADDRESSES: Send all comments on the proposed Advisory Circular to:

Curtis Holsclaw, Manager of Research and Engineering, AEE-110, Office

of Environment and Energy, 800 Independence Ave., S.W., Washington, DC

20591. Comments may be examined at the above address between 7:30 a.m.

and 4:00 p.m. weekdays, except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Edward McQueen, Research and

Engineering Branch, AEE-110, Office of Environment and Energy, 800

Independence Ave., S.W., Washington, DC 20591; telephone (202) 267-

3560; E-mail: [email protected]

SUPPLEMENTARY INFORMATION:

Comments Invited

A copy of the subject Advisory Circular may be obtained by

contacting the person named above under FOR FURTHER INFORMATION

CONTACT. Interested persons are invited to comment on the proposed

Advisory Circular by submitting such written data, views, or arguments,

as they may desire. Commentors must identify the title of the Advisory

Circular and submit comments in duplicate to the address specified

above. All comments received on or before the closing date for comments

will be considered before issuing the final Advisory Circular.

Discussion

Advisory Circular (AC) 34-1, Fuel Venting and Exhaust Emission

Requirements for Turbine Engine Powered Airplanes, has been written to

provide section-by-section guidance on 14 CFR Part 34. The AC is

intended to provide a better understanding of the provisions of the

Part 34, and to facilitate standardized implementation of the Part 34

throughout the aviation industry. The AC contains information

concerning the standards and requirements for aircraft fuel venting and

engine emission certification, and presents explanatory information and

guidance, as necessary, to identify acceptable means of compliance. The

information contained in the AC sets forth acceptable means, but not

the sole means, by which compliance may be shown with the requirements

of Part 34.

Pursuant to the Clean Air Act, Sections 231 and 232, Part 34 must

conform to 40 CFR part 87 as issued by the United States Environmental

Protection Agency. Potential users of this proposed AC, as well as Part

34, should be alert to any changes to 40 CFR part 87 that have not yet

been included in either Part 34 or this AC. In such instances the

requirements of 40 CFR Part 87 are considered controlling.

In addition to the section-by-section explanations, the AC includes

three chapters that explain specific appendices from the International

Civil Aviation Organization (ICAO), Annex 16, Volume II, Aircraft

Engine Emissions. Since Annex 16 is specifically referenced in Part 34,

these chapters are included to make the AC a more complete reference

source.

The ICAO appendices deal with detailed technical issues regarding

instrumentation and measurement techniques and, as such, are relatively

complex. Thus, they have been kept distinct from the rest of the AC as

separate chapters. Typically, only those readers who are interested in

specific equations and/or details regarding measurement techniques will

need to read these sections.

Issued in Washington, DC on September 22, 1998.

James D. Erickson,

Director of Environment and Energy.

[FR Doc. 98-25864 Filed 9-28-98; 8:45 am]

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