[Federal Register Volume 66, Number 148 (Wednesday, August 1, 2001)]
[Notices]
[Page 39815]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-19155]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


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

AGENCY: Federal Aviation Administration.

ACTION: Notice.

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SUMMARY: This notice invites public comment on a proposed advisory 
circular (AC) that provides updated guidance for implementing the fuel 
venting and exhaust emission requirements for turbine engine powered 
airplanes.

DATES: Comments must be received on or before October 1, 2001.

ADDRESSES: Send all comments on the proposed AC to: Curtis Holsclaw, 
Manager of Emissions Division, AEE-300, Office of Environment and 
Energy, 800 Independence Avenue, SW., Washington, DC 20591. Comments 
may be examined at the above address between 7:30 a.m. and 4 p.m. 
weekdays, except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Edward McQueen, Emissions Division, 
AEE-300, Office of Environment and Energy, 800 Independence Avenue, 
SW., Washington, DC 20591; telephone (202) 267-3560; E-mail: 
[email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    A copy of the subject AC may be obtained by contacting the person 
named above under FOR FURTHER INFORMATION CONTACT. Interested persons 
are invited to comment on the proposed AC by submitting such written 
data, views, or arguments, as they may desire. Commenters must identify 
the title of the AC 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 AC.

Discussion

    Advisory Circular (AC) 34-1A, 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 (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 updated 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 (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 part 87 that have 
not yet been included in either part 34 or this AC. In such instances 
the requirements of 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 July 26, 2001.
Carl E. Burleson,
Director of Environment and Energy.
[FR Doc. 01-19155 Filed 7-31-01; 8:45 am]
BILLING CODE 4910-13-M