[Federal Register Volume 76, Number 154 (Wednesday, August 10, 2011)]
[Notices]
[Pages 49525-49526]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-20324]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Advisory Circular 20-24C, Approval of Propulsion Fuels and
Lubricating Oils
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of issuance of advisory circular.
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SUMMARY: This notice announces the issuance of Advisory Circular (AC)
20-24C, Approval of Propulsion Fuels and Lubricating Oils. This AC
provides guidance on regulations and policy applicable to adding fuels
and oils to type certificates as engine, aircraft, or auxiliary power
unit (APU) operating limitations. It also provides acceptable methods,
but not the only methods, that may be used to approve aircraft,
engines, or APUs to operate with specified propulsion fuels and
lubricating oils.
DATES: The Engine and Propeller Directorate issued AC 20-24C on July
29, 2011.
FOR FURTHER INFORMATION CONTACT: The Federal Aviation Administration,
Attn: Mark Rumizen, Aviation Fuels Specialist, Engine and Propeller
Standards Staff, ANE-110, 12 New England Executive Park, Burlington, MA
[[Page 49526]]
01803-5299; telephone: (781) 238-7113; fax: (781) 238-7199; e-mail:
[email protected].
Comments were submitted to the FAA during the period the draft AC
was posted for public viewing on the FAA's Aviation Safety Draft
Documents Open for Comment Web site. The disposition of these comments
can be viewed at the FAA's Regulatory and Guidance library Web site
(http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/Frameset?OpenPage).
SUPPLEMENTARY INFORMATION: AC 20-24C cancels AC 20-24B and describes
established methods of adding fuels and oils as engine, aircraft, or
APU operating limitations. These established methods reflect procedures
and practices employed by the Engine and Propeller Directorate (EPD)
for oversight of successful aviation fuel and lubricating oil
certification projects conducted over many years. These procedures and
practices have essentially relied on fuels and oils grade or brand
designations that were identified by industry voluntary consensus-
based, military, or other governmental standards.
A draft of this AC was made available for public comment on
September 1, 2010, for a period of 60 days. The FAA received many
comments regarding the use of other, new and novel methods to add fuels
and oils as engine, aircraft, or APU operating limitations in lieu of
the methods described in the AC. However, the EPD cannot develop
guidance describing other, new and novel methods until we gain
sufficient certification oversight experience with these projects.
Therefore, the final AC does not contain guidance on these new and
novel methods to add fuels and oils as engine aircraft, or APU
operating limitations.
How To Obtain Copies: A paper copy of AC 20-24C may be obtained by
writing to the U.S. Department of Transportation, Subsequent
Distribution Office, DOT Warehouse, SVC-121.23, Ardmore East Business
Center, 3341Q 75th Ave., Landover, MD 20785, telephone 301-322-5377, or
by taxing your request to the warehouse at 301-386-5394. The AC will
also be available on the Internet at http://www.faa.gov/regulations_policies (then click on ``Advisory Circulars'').
Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.
Issued in Burlington, Massachusetts, on July 29, 2011.
Peter A. White,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2011-20324 Filed 8-9-11; 8:45 am]
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