[Federal Register Volume 69, Number 24 (Thursday, February 5, 2004)]
[Notices]
[Pages 5648-5649]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 04-2516]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Advisory Circular 20-147, Turbojet, Turboprop, and Turbofan 
Engine Induction System Icing and Ice Ingestion

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) 
20-147, Turbojet, Turboprop, and Turbofan Engine Induction System Icing 
and Ice Ingestion. This AC describes acceptable means, but not the only 
means, for demonstrating compliance with the applicable regulations, 
helping to reduce inconsistencies and eventual surprises to both engine 
manufacturers and engine installers, when installing a part 33 
certified engine in a part 23 or 25 aircraft. This AC is intended for 
engine manufacturers, modifiers, foreign regulatory authorities, FAA 
engine type certification engineers and their designees. This AC is 
neither mandatory nor regulatory in nature and does not constitute a 
regulation.

DATES: The Manager, Aircraft Engineering Division, issued AC 20-147 on 
2/02/04.

FOR FURTHER INFORMATION CONTACT: John Fisher, Engine and Propeller 
Standards Staff, ANE-110, 12 New England Executive Park, Burlington, 
Massachusetts 01803; telephone: (781) 238-7149; fax: (781) 238-7199; e-
mail: [email protected]. The subject AC is available on the Internet 
at the following address: www.airweb.faa.gov/rgl.

SUPPLEMENTARY INFORMATION: The FAA published a notice in the Federal 
Register on January 24, 2000 (65 FR 3752), and again on August 8, 2002 
(67 FR 54011) to announce the availability of the proposed AC and 
invite interested parties to comment.

(Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.)


[[Page 5649]]


    Issued in Washington, DC, on February 2, 2004.
David W. Hempe,
Manager, Aircraft Engineering Division.
[FR Doc. 04-2516 Filed 2-4-04; 8:45 am]
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