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<![CDATA[53154Proposed RulesFederal RegisterVol. 77, No. 170Friday, August 31, 2012This section of the FEDERAL REGISTERcontains notices to the public of the proposedissuance of rules and regulations. Thepurpose of these notices is to give interestedpersons an opportunity to participate in therule making prior to the adoption of the finalrules.DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration14 CFR Part 39[Docket No. FAA–2012–0885; DirectorateIdentifier 2012–NE–18–AD]Examining the AD DocketRIN 2120–AA64Airworthiness Directives; ThielertAircraft Engines GmbH Models TAE125–02–99 and TAE 125–02–114Reciprocating EnginesFederal AviationAdministration (FAA), DOT.ACTION: Notice of proposed rulemaking(NPRM).AGENCY:We propose to adopt a newairworthiness directive (AD) for all TAE125–02–99 and TAE 125–02–114reciprocating engines. This proposedAD was prompted by an in-flightshutdown of an airplane equipped witha TAE 125–02–99 engine. This proposedAD would require inspection of the oilfiller plug vent hole at the nextscheduled maintenance or within 110flight hours after the effective date ofthis AD. If chips are found to beblocking the vent hole, additionalcorrective action is required before nextflight. We are proposing this AD toprevent engine in-flight shutdown orpower loss, possibly resulting inreduced control of the airplane.DATES: We must receive comments onthis proposed AD by October 30, 2012.ADDRESSES: You may send comments byany of the following methods:• Federal Rulemaking Portal: Go tohttp://www.regulations.gov and followthe instructions for sending yourcomments electronically.• Mail: Docket Management Facility,U.S. Department of Transportation, 1200New Jersey Avenue SE., West BuildingGround Floor, Room W12–140,Washington, DC 20590–0001.• Hand Delivery: Deliver to Mailaddress above between 9 a.m. and 5p.m., Monday through Friday, exceptFederal holidays.EMCDONALD on DSK67QTVN1PROD with PROPOSALSSUMMARY:VerDate Mar<15>201011:21 Aug 30, 2012Jkt 226001• Fax: 202–493–2251.For service information identified inthis proposed AD, contact ThielertAircraft Engines GmbH, Platanenstrasse14 D–09350, Lichtenstein, Germany,telephone: +49–37204–696–0; fax: +49–37204–696–2912; email:info@centurion-engines.com. You mayreview copies of the referenced serviceinformation at the FAA, Engine &Propeller Directorate, 12 New EnglandExecutive Park, Burlington, MA. Forinformation on the availability of thismaterial at the FAA, call 781–238–7125.You may examine the AD docket onthe Internet at http://www.regulations.gov; or in person at theDocket Operations office between 9 a.m.and 5 p.m., Monday through Friday,except Federal holidays. The AD docketcontains this proposed AD, theregulatory evaluation, any commentsreceived and other information. Thestreet address for the Docket Operationsoffice (phone: 800–647–5527) is thesame as the Mail address provided inthe ADDRESSES section. Comments willbe available in the AD docket shortlyafter receipt.FOR FURTHER INFORMATION CONTACT:Frederick Zink, Aerospace Engineer,Engine Certification Office, FAA, Engineand Propeller Directorate, 12 NewEngland Executive Park, Burlington, MA01803; email: frederick.zink@faa.gov;telephone: 781–238–7779; fax: 781–238–7199.SUPPLEMENTARY INFORMATION:Comments InvitedWe invite you to send any writtenrelevant data, views, or arguments aboutthis proposed AD. Send your commentsto an address listed under theADDRESSES section. Include ‘‘Docket No.FAA–2012–0885; Directorate Identifier2012–NE–18–AD’’ at the beginning ofyour comments. We specifically invitecomments on the overall regulatory,economic, environmental, and energyaspects of this proposed AD. We willconsider all comments received by theclosing date and may amend thisproposed AD based on those comments.We will post all comments wereceive, without change, to http://www.regulations.gov, including anypersonal information you provide. Wewill also post a report summarizing eachsubstantive verbal contact with FAAPO 00000Frm 00001Fmt 4702Sfmt 4702personnel concerning this proposed AD.Using the search function of the Website, anyone can find and read thecomments in any of our dockets,including, if provided, the name of theindividual who sent the comment (orsigned the comment on behalf of anassociation, business, labor union, etc.).You may review the DOT’s completePrivacy Act Statement in the FederalRegister published on April 11, 2000(65 FR 19477–78).DiscussionThe European Aviation Safety Agency(EASA), which is the Technical Agentfor the Member States of the EuropeanCommunity, has issued EASAAirworthiness Directive No. 2012–0112,dated June 22, 2012 (referred to afterthis as ‘‘the MCAI’’), to correct an unsafecondition for the specified products.The MCAI states:An engine in-flight shutdown has beenreported on an aeroplane equipped with aTAE 125–02–99 engine. The results of theinvestigation showed that this was due toblockage of the gearbox oil filling plug venthole, which caused pressurisation in thegearbox, resulting in oil leakage and aslipping clutch. This condition, if notcorrected, could result in further cases ofengine in-flight shutdown and consequentloss of control of the aeroplane.Further investigation revealed that theblockage to the oil cap vent was theresult of a residual chip from machiningthe oil cap vent hole. The chip is fromthe manufacturing process and did notfall off the oil plug. This is not the resultof material in the oil system causing theblockage. You may obtain furtherinformation including the affectedgearbox serial number list by examiningthe MCAI in the AD docket.Relevant Service InformationThielert Aircraft Engines has issuedService Bulletin TM TAE 125–1015 P1,Initial Issue, dated April 27, 2012. Theactions described in this serviceinformation are intended to correct theunsafe condition identified in theMCAI.FAA’s Determination and Requirementsof This Proposed ADThis product has been approved byGermany and is approved for operationin the United States. Pursuant to ourbilateral agreement with Germany,EASA has notified us of the unsafecondition described in the MCAI andE:FRFM31AUP1.SGM31AUP1Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rulesservice information referenced above.We are proposing this AD because weevaluated all information provided byEASA and determined the unsafecondition exists and is likely to exist ordevelop on other products of the sametype design. The proposed AD wouldrequire inspection of the oil filler plugvent hole at the next scheduledmaintenance or within 110 flight hoursafter the effective date of this AD. Ifchips are found to be blocking the venthole, additional corrective action isrequired before next flight.Costs of ComplianceWe estimate that this proposed ADwould affect about 45 engines installedon airplanes of U.S. registry. We alsoestimate that it would take about 2.5work-hours per product to comply withthis proposed AD. The average laborrate is $85 per work-hour. Requiredparts would cost about $30 per engine.Based on these figures, we estimate thecost of the proposed AD to U.S.operators to be $10,913.Authority for This RulemakingTitle 49 of the United States Codespecifies the FAA’s authority to issuerules on aviation safety. Subtitle I,section 106, describes the authority ofthe FAA Administrator. ‘‘Subtitle VII:Aviation Programs,’’ describes in moredetail the scope of the Agency’sauthority.We are issuing this rulemaking underthe authority described in ‘‘Subtitle VII,Part A, Subpart III, Section 44701:General requirements.’’ Under thatsection, Congress charges the FAA withpromoting safe flight of civil aircraft inair commerce by prescribing regulationsfor practices, methods, and proceduresthe Administrator finds necessary forsafety in air commerce. This regulationis within the scope of that authoritybecause it addresses an unsafe conditionthat is likely to exist or develop onproducts identified in this rulemakingaction.EMCDONALD on DSK67QTVN1PROD with PROPOSALSRegulatory FindingsWe determined that this proposed ADwould not have federalism implicationsunder Executive Order 13132. Thisproposed AD would not have asubstantial direct effect on the States, onthe relationship between the nationalGovernment and the States, or on thedistribution of power andresponsibilities among the variouslevels of government.For the reasons discussed above, Icertify this proposed regulation:1. Is not a ‘‘significant regulatoryaction’’ under Executive Order 12866;VerDate Mar<15>201011:21 Aug 30, 2012Jkt 226001531552. Is not a ‘‘significant rule’’ under theDOT Regulatory Policies and Procedures(44 FR 11034, February 26, 1979); and3. Will not have a significanteconomic impact, positive or negative,on a substantial number of small entitiesunder the criteria of the RegulatoryFlexibility Act.We prepared a regulatory evaluationof the estimated costs to comply withthis proposed AD and placed it in theAD docket.(f) Installation ProhibitionAfter the effective date of this AD, do notinstall a gearbox with an S/N listed in TAES/B TM TAE 125–1015, Initial Issued, datedApril 27, 2012, into any engine unless the oilfiller plug has passed the inspection requiredby paragraph (e)(1) of this AD.List of Subjects in 14 CFR Part 39(h) Related Information(1) For more information about this AD,contact Frederick Zink, Aerospace Engineer,Engine Certification Office, FAA, Engine andPropeller Directorate, 12 New EnglandExecutive Park, Burlington, MA 01803;email: frederick.zink@faa.gov; telephone(781) 238–7779; fax (781) 238–7199.(2) Refer to MCAI Airworthiness DirectiveNo. 2012–0112, dated June 22, 2012, andTAE S/B TM TAE 125–1015 P1, Initial Issue,dated April 27, 2012 for related information.(3) For service information identified inthis AD, contact Thielert Aircraft EnginesGmbH, Platanenstrasse 14 D–09350,Lichtenstein, Germany, telephone: +49–37204–696–0; fax: +49–37204–696–2912;email: info@centurion-engines.com. You mayreview copies of the referenced serviceinformation at the FAA, Engine & PropellerDirectorate, 12 New England Executive Park,Burlington, MA. For information on theavailability of this material at the FAA, call781–238–7125.Air transportation, Aircraft, Aviationsafety, Incorporation by reference,Safety.The Proposed AmendmentAccordingly, under the authoritydelegated to me by the Administrator,the FAA proposes to amend 14 CFR part39 as follows:PART 39—AIRWORTHINESSDIRECTIVES1. The authority citation for part 39continues to read as follows:Authority: 49 U.S.C. 106(g), 40113, 44701.§ 39.13[Amended]2. The FAA amends § 39.13 by addingthe following new AD:Thielert Aircraft Engines: Docket No. FAA–2012–0885; Directorate Identifier 2012–NE–18–AD.(a) Comments Due DateWe must receive comments by October 30,2012.(b) Affected Airworthiness Directives (ADs)None.(c) ApplicabilityThis AD applies to all TAE 125–09–99 andTAE 125–02–114 reciprocating engines.(d) ReasonThis AD was prompted by an in-flightshutdown of an airplane equipped with anTAE 125–02–99 engine. We are issuing thisAD to prevent engine in-flight shutdown orpower loss, possibly resulting in reducedcontrol of the airplane.(e) Actions and ComplianceUnless already done, within 110 flighthours after the effective date of this AD, orat the next scheduled maintenance, do thefollowing.(1) Remove the oil filler plug and check forchips blocking the vent hole in accordancewith TAE Service Bulletin (S/B) TM TAE125–1015 P1, Initial Issue, dated April 27,2012.(2) If chips are found during the inspectionin paragraph (e)(1) of this AD, disassemblethe gearbox and check the radial shaft sealingrings (at the clutch and the propeller shaft)for leakage. If leakage is noted, replace thegearbox before the next flight.PO 00000Frm 00002Fmt 4702Sfmt 4702(g) Alternative Methods of Compliance(AMOCs)The Manager, Engine Certification Office,FAA, may approve AMOCs for this AD. Usethe procedures found in 14 CFR 39.19.Issued in Burlington, Massachusetts, onAugust 24, 2012.Robert G. Mann,Acting Manager, Engine & PropellerDirectorate, Aircraft Certification Service.[FR Doc. 2012–21524 Filed 8–30–12; 8:45 am]BILLING CODE 4910–13–PDEPARTMENT OF TRANSPORTATIONFederal Aviation Administration14 CFR Part 39[Docket No. FAA–2011–1222; DirectorateIdentifier 2010–NM–268–AD]RIN 2120–AA64Airworthiness Directives; The BoeingCompany AirplanesFederal AviationAdministration (FAA), DOT.ACTION: Supplemental notice ofproposed rulemaking (NPRM);reopening of comment period.AGENCY:We are revising an earlierproposed airworthiness directive (AD)for certain The Boeing Company Model737–600, –700, –700C, –800, –900, and–900ER series airplanes. That NPRMproposed to require checking the escapeslide girt for serviceability, andSUMMARY:E:FRFM31AUP1.SGM31AUP1</15></15>]]>This AD applies to all Thielert Aircraft Engines GmbH TAE 125-01 reciprocating engines. This AD was prompted by a report of engine power loss due to engine coolant contaminating the engine clutch. The design of the engine allows the crankcase assembly opening to be susceptible to contamination from external sources.
This AD applies to all Thielert Aircraft Engines GmbH TAE 125-02-99 and TAE-125-02-114 reciprocating engines with friction disk, part number (P/N) 05-7211-K010201, installed. (d) Reason This AD was prompted by in-flight engine shutdown incidents reported on airplanes equipped with TAE 125 engines. Rev.1: 25 September 2007 1 TAR 6/21B/10 – Thielert Centurion 4.0 Executive Summary New Zealand Type Acceptance has been granted to the Thielert Aircraft Engines GmbH Centurion 4.0 aircraft engine based on validation of EASA Type Certificate number EASA.E.014. Www.centurion-engines.com Thielert Aircraft Engines GmbH Platanenstrasse 14 09350 Lichtenstein, Germany Tel: +49 (37204) 696-0 Fax: +49 (37204) 696-2912. Thielert Aircraft Engines GmbH Superior Air Parts Inc. 420, 00 Kgs Hs Code: 84091000 Slac 3 Pallets Sap Sl36500 A1 B 966, 00 Kgs Hs Code: 84831025 4 Pallets Sap Sl36006 N A1.
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We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Service has shown that the small outlet of the blow-by oil separators, part number 02-7250-18100R1; 02-7250-18100R2; 02-7250-18100R3; 02-7250-18100R4; 02-7250-18300R1; 02-7250-18300R2; 02-7250-18300R3; 02-7250-18300R4; or 02-7250-18300R5, may cause a blow-by gas pressure increase inside the crankcase of the engine in excess of the oil seal design pressure limits. Leaking engine oil may adversely affect the gearbox clutch or the engine lubrication system. This condition, if not corrected, could lead to in-flight cases of engine power loss or ultimately, shutdown.
We are issuing this AD to prevent loss of engine power or uncommanded engine shutdown during flight due to excessive crankcase blow-by gas pressure.
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