Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines, 47228-47230 [2013-18797]

Download as PDF 47228 Federal Register / Vol. 78, No. 150 / Monday, August 5, 2013 / Proposed Rules and qualitative information, should be included in a single release on a company’s Web site, or in any other forum that is reasonably accessible to the public. Each bank or thrift must publish a summary of its stress tests results separate from the results of stress tests conducted at the consolidated level of its parent holding company, but the company may include this summary with its holding company’s public disclosure. Thus, a bank or thrift with a parent holding company that is required to conduct a company-run DFA stress test under the Federal Reserve Board’s DFA stress test rules will have satisfied its public disclosures requirement when the parent holding company discloses summary results of subsidiary’s annual stress test in satisfaction of the requirements of the applicable regulations of the company’s primary Federal regulator, unless the company’s primary regulator determines that the disclosures at the holding company level does not adequately capture the potential impact of the scenarios on the capital of the companies. A company must disclose, at a minimum, the following information regarding the severely adverse scenario: a. A description of the types of risks included in the stress test; b. A summary description of the methodologies used in the stress test; c. Estimates of— Aggregate losses; PPNR; PLLL; Net income; and Pro forma regulatory capital ratios and any other capital ratios specified by the primary supervisor; d. An explanation of the most significant causes for the changes in regulatory capital ratios; and e. For bank holding companies and savings and loan holding companies: for a stress test conducted by an insured depository institution subsidiary of the bank holding company or savings and loan holding company pursuant to section 165(i)(2) of the Dodd-Frank Act, changes in regulatory capital ratios and any other capital ratios specified by the primary Federal financial regulatory agency of the depository institution subsidiary over the planning horizon, including an explanation of the most significant causes for the changes in regulatory capital ratios. It should be clear in the company’s public disclosure that the results are conditioned on the supervisory scenarios. Items to be publicly disclosed should follow the same definitions as those provided in the confidential report to supervisors. Companies should disclose all of the required items in a single public release, as it is difficult to interpret the quantitative results without the qualitative supporting information. DIFFERENCES IN DFA STRESS TEST REQUIREMENTS FOR HOLDING COMPANIES VERSUS BANKS AND THRIFTS Bank Holding Companies and Savings and Loan Holding Companies Capital actions used for company-run stress tests. Public disclosure of company-run stress tests .. Capital actions prescribed in Federal Reserve No prescribed capital actions. Banks and Board’s DFA stress tests rules. Generally thrifts should use capital actions consistent based on historical dividends, contracted with the scenario and their internal business payments, and no repurchases or issuances. practices. Disclosure must include information on stress Disclosure requirement met when parent comtests conducted by subsidiaries subject to pany disclosure includes the required inforDFA stress tests. mation on the bank or thrift’s stress test results, unless the company’s primary regulator determines that the disclosure at the holding company level does not adequately capture the potential impact of the scenarios on the capital of the company. DEPARTMENT OF TRANSPORTATION [FR Doc. 2013–18716 Filed 8–2–13; 8:45 am] emcdonald on DSK67QTVN1PROD with PROPOSALS Dated: July 25, 2013. Thomas J. Curry, Comptroller of the Currency. By order of the Board of Governors of the Federal Reserve System, July 24, 2013. Robert deV. Frierson, Secretary of the Board. Dated at Washington, DC, this 30th day of July, 2013. Federal Deposit Insurance Corporation. Robert E. Feldman, Executive Secretary. AGENCY: BILLING CODE 4810–33–P; 6714–01–P; 6210–01–P Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2013–0561; Directorate Identifier 2013–NE–23–AD] RIN 2120–AA64 Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). We propose to adopt a new airworthiness directive (AD) for all Thielert Aircraft Engines GmbH TAE 125–01 reciprocating engines. This proposed AD was prompted by a report SUMMARY: VerDate Mar<15>2010 16:53 Aug 02, 2013 Jkt 229001 Banks and Thrifts PO 00000 Frm 00015 Fmt 4702 Sfmt 4702 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 proposed AD would require applying sealant to close the engine clutch housing (crankcase assembly) opening. We are proposing this AD to prevent in-flight engine power loss, which could result in loss of control of, and damage to, the airplane. We must receive comments on this proposed AD by October 4, 2013. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility, U.S. Department of Transportation, 1200 DATES: E:\FR\FM\05AUP1.SGM 05AUP1 Federal Register / Vol. 78, No. 150 / Monday, August 5, 2013 / Proposed Rules New Jersey Avenue SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Fax: 202–493–2251. For service information identified in this proposed AD, contact Thielert Aircraft Engines GmbH, Platanenstrasse 14 D–09350, Lichtenstein, Germany, phone: +49–37204–696–0; fax: +49– 37204–696–55; email: info@centurionengines.com. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. Examining the AD Docket You may examine the AD docket on the Internet at http:// www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the Mandatory Continuing Airworthiness Information (MCAI), the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (phone: 800–647–5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Frederick Zink, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7779; fax: 781–238 7199; email: frederick.zink@faa.gov. SUPPLEMENTARY INFORMATION: emcdonald on DSK67QTVN1PROD with PROPOSALS Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2013–0561; Directorate Identifier 2013–NE–23–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to http:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA VerDate Mar<15>2010 16:53 Aug 02, 2013 Jkt 229001 personnel concerning this proposed AD. Using the search function of the Web site, anyone can find and read the comments in any of our dockets, including, if provided, the name of the individual who sent the comment (or signed the comment on behalf of an association, business, labor union, etc.). You may review the DOT’s complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477–78). Discussion The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2013–0109, dated May 22, 2013 (referred to hereinafter as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: A power loss event was reported on an aeroplane equipped with a TAE 125–01 engine. The investigation results showed that the probable cause was contamination of the engine clutch by coolant spillage during the last maintenance operation. The contamination penetrated the clutch housing through an opening located under the coolant tank that was only closed by a not fluid-tight plastic cover. You may obtain further information by examining the MCAI in the AD docket. The design of the engine allows the crankcase assembly opening to be susceptible to contamination from external sources. We are proposing this AD to prevent in-flight engine power loss, which could result in loss of control of, and damage to, the airplane. Relevant Service Information Thielert Aircraft Engines GmbH has issued Service Bulletin (SB) No. TM TAE 125–0022, dated August 8, 2012. The SB describes procedures for applying sealant to close the engine clutch housing (crankcase assembly) opening. FAA’s Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of Germany, and is approved for operation in the United States. Pursuant to our bilateral agreement with the European Community, EASA has notified us of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all information provided by EASA and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. This proposed AD would require applying PO 00000 Frm 00016 Fmt 4702 Sfmt 4702 47229 sealant to close the engine clutch housing (crankcase assembly) opening. Costs of Compliance We estimate that this proposed AD affects 140 engines installed on airplanes of U.S. registry. We also estimate that it would take about 2.5 hours per engine to comply with this proposed AD. The average labor rate is $85 per hour. Required parts cost about $110 per engine. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $45,150. Our cost estimate is exclusive of possible warranty coverage. Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. ‘‘Subtitle VII: Aviation Programs,’’ describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in ‘‘Subtitle VII, Part A, Subpart III, Section 44701: General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction, and (4) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. E:\FR\FM\05AUP1.SGM 05AUP1 47230 Federal Register / Vol. 78, No. 150 / Monday, August 5, 2013 / Proposed Rules We prepared a regulatory evaluation of the estimated costs to comply with this proposed AD and placed it in the AD docket. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ Thielert Aircraft Engines GmbH: Docket No. FAA–2013–0561; Directorate Identifier 2013–NE–23–AD. (a) Comments Due Date We must receive comments by October 4, 2013. (b) Affected ADs None. the procedures found in 14 CFR 39.19 to make your request. (g) Related Information (1) For more information about this AD, contact Frederick Zink, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7779; fax: 781–238 7199; email: frederick.zink@faa.gov. (2) Refer to European Aviation Safety Agency Airworthiness Directive 2013–0109, dated May 22, 2013, for related information. You may examine the AD on the Internet at http://ad.easa.europa.eu/ad/2013–0109. (3) Thielert Aircraft Engines GmbH Service Bulletin No. TM TAE 125–0022, dated August 8, 2012, which is not incorporated by reference in this AD, can be obtained from Thielert Aircraft Engines GmbH, using the contact information in paragraph (g)(4) of this AD. (4) For service information identified in this AD, contact Thielert Aircraft Engines GmbH, Platanenstrasse 14 D–09350, Lichtenstein, Germany, telephone: +49– 37204–696–0; fax: +49–37204–696–55; email: info@centurion-engines.com. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. Issued in Burlington, Massachusetts, on July 25, 2013. Thomas A. Boudreau, Acting Assistant Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2013–18797 Filed 8–2–13; 8:45 am] (d) Reason 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. We are issuing this AD to prevent in-flight engine power loss, which could result in loss of control of, and damage to, the airplane. emcdonald on DSK67QTVN1PROD with PROPOSALS (c) Applicability This AD applies to all Thielert Aircraft Engines GmbH TAE 125–01 reciprocating engines. DEPARTMENT OF TRANSPORTATION BILLING CODE 4910–13–P (e) Actions and Compliance Unless already done, do the following actions. (1) After the effective date of this AD at the next annual or 100-hour inspection, whichever comes first, apply sealant to close the engine clutch housing (crankcase assembly) opening. (2) Thereafter, reapply sealant to the engine clutch housing (crankcase assembly) opening, whenever the sealant is found to be not liquid-tight, or is removed. (3) Guidance on the sealant and application can be found in Thielert Aircraft Engines GmbH Service Bulletin No.TM TAE 125–0022, dated August 8, 2012. (f) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs to this AD. Use VerDate Mar<15>2010 16:53 Aug 02, 2013 Jkt 229001 Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2013–0679; Directorate Identifier 2009–SW–015–AD] RIN 2120–AA64 Airworthiness Directives; Eurocopter France (Eurocopter) Model Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for Eurocopter Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, and AS350D1 helicopters. This proposed AD would require measuring the distance between the end of the main rotor collective pitch lever (collective) locking stud (locking stud) and the locking strip and repairing the locking stud if the clearance is insufficient. This proposed AD is SUMMARY: PO 00000 Frm 00017 Fmt 4702 Sfmt 4702 prompted by a report that insufficient distance between the locking stud and the locking strip may cause the collective to become inadvertently locked in the low pitch (low) position. The proposed actions are intended to prevent the collective from becoming inadvertently locked in the low position and subsequent loss of control of the helicopter. DATES: We must receive comments on this proposed AD by October 4, 2013. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Docket: Go to http://www.regulations.gov. Follow the online instructions for sending your comments electronically. • Fax: 202–493–2251. • Mail: Send comments to the U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590–0001. • Hand Delivery: Deliver to the ‘‘Mail’’ address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. Examining the AD Docket You may examine the AD docket on the Internet at http:// www.regulations.gov or in person at the Docket Operations Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the economic evaluation, any comments received, and other information. The street address for the Docket Operations Office (telephone 800–647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. For service information identified in this proposed AD, contact American Eurocopter Corporation, 2701 N. Forum Drive, Grand Prairie, TX 75052; telephone (972) 641–0000 or (800) 232–0323; fax (972) 641–3775; or at http://www.eurocopter.com/techpub. You may review the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. FOR FURTHER INFORMATION CONTACT: Robert Grant, Aviation Safety Engineer, Safety Management Group, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone 817–222–5110; email robert.grant@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to participate in this rulemaking by submitting written comments, data, or views. We also E:\FR\FM\05AUP1.SGM 05AUP1

Agencies

[Federal Register Volume 78, Number 150 (Monday, August 5, 2013)]
[Proposed Rules]
[Pages 47228-47230]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-18797]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2013-0561; Directorate Identifier 2013-NE-23-AD]
RIN 2120-AA64


Airworthiness Directives; Thielert Aircraft Engines GmbH 
Reciprocating Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for all 
Thielert Aircraft Engines GmbH TAE 125-01 reciprocating engines. This 
proposed 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 proposed AD would require 
applying sealant to close the engine clutch housing (crankcase 
assembly) opening. We are proposing this AD to prevent in-flight engine 
power loss, which could result in loss of control of, and damage to, 
the airplane.

DATES: We must receive comments on this proposed AD by October 4, 2013.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 1200

[[Page 47229]]

New Jersey Avenue SE., West Building Ground Floor, Room W12-140, 
Washington, DC 20590-0001.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Fax: 202-493-2251.
    For service information identified in this proposed AD, contact 
Thielert Aircraft Engines GmbH, Platanenstrasse 14 D-09350, 
Lichtenstein, Germany, phone: +49-37204-696-0; fax: +49-37204-696-55; 
email: engines.com">info@centurion-engines.com. You may view this service 
information at the FAA, Engine & Propeller Directorate, 12 New England 
Executive Park, Burlington, MA. For information on the availability of 
this material at the FAA, call 781-238-7125.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this proposed AD, the Mandatory 
Continuing Airworthiness Information (MCAI), the regulatory evaluation, 
any comments received, and other information. The street address for 
the Docket Operations office (phone: 800-647-5527) is the same as the 
Mail address provided in the ADDRESSES section. Comments will be 
available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Frederick Zink, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 12 
New England Executive Park, Burlington, MA 01803; phone: 781-238-7779; 
fax: 781-238 7199; email: frederick.zink@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2013-0561; 
Directorate Identifier 2013-NE-23-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact 
with FAA personnel concerning this proposed AD. Using the search 
function of the Web site, anyone can find and read the comments in any 
of our dockets, including, if provided, the name of the individual who 
sent the comment (or signed the comment on behalf of an association, 
business, labor union, etc.). You may review the DOT's complete Privacy 
Act Statement in the Federal Register published on April 11, 2000 (65 
FR 19477-78).

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
Airworthiness Directive 2013-0109, dated May 22, 2013 (referred to 
hereinafter as ``the MCAI''), to correct an unsafe condition for the 
specified products. The MCAI states:

    A power loss event was reported on an aeroplane equipped with a 
TAE 125-01 engine. The investigation results showed that the 
probable cause was contamination of the engine clutch by coolant 
spillage during the last maintenance operation. The contamination 
penetrated the clutch housing through an opening located under the 
coolant tank that was only closed by a not fluid-tight plastic 
cover.

You may obtain further information by examining the MCAI in the AD 
docket. The design of the engine allows the crankcase assembly opening 
to be susceptible to contamination from external sources. We are 
proposing this AD to prevent in-flight engine power loss, which could 
result in loss of control of, and damage to, the airplane.

Relevant Service Information

    Thielert Aircraft Engines GmbH has issued Service Bulletin (SB) No. 
TM TAE 125-0022, dated August 8, 2012. The SB describes procedures for 
applying sealant to close the engine clutch housing (crankcase 
assembly) opening.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of 
Germany, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the European Community, EASA has 
notified us of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all information provided by EASA and determined the unsafe 
condition exists and is likely to exist or develop on other products of 
the same type design. This proposed AD would require applying sealant 
to close the engine clutch housing (crankcase assembly) opening.

Costs of Compliance

    We estimate that this proposed AD affects 140 engines installed on 
airplanes of U.S. registry. We also estimate that it would take about 
2.5 hours per engine to comply with this proposed AD. The average labor 
rate is $85 per hour. Required parts cost about $110 per engine. Based 
on these figures, we estimate the cost of the proposed AD on U.S. 
operators to be $45,150. Our cost estimate is exclusive of possible 
warranty coverage.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska to the extent 
that it justifies making a regulatory distinction, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

[[Page 47230]]

    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD and placed it in the AD docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

Thielert Aircraft Engines GmbH: Docket No. FAA-2013-0561; 
Directorate Identifier 2013-NE-23-AD.

(a) Comments Due Date

    We must receive comments by October 4, 2013.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Thielert Aircraft Engines GmbH TAE 125-01 
reciprocating engines.

(d) Reason

    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. We are issuing this AD to 
prevent in-flight engine power loss, which could result in loss of 
control of, and damage to, the airplane.

(e) Actions and Compliance

    Unless already done, do the following actions.
    (1) After the effective date of this AD at the next annual or 
100-hour inspection, whichever comes first, apply sealant to close 
the engine clutch housing (crankcase assembly) opening.
    (2) Thereafter, reapply sealant to the engine clutch housing 
(crankcase assembly) opening, whenever the sealant is found to be 
not liquid-tight, or is removed.
    (3) Guidance on the sealant and application can be found in 
Thielert Aircraft Engines GmbH Service Bulletin No.TM TAE 125-0022, 
dated August 8, 2012.

(f) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
to this AD. Use the procedures found in 14 CFR 39.19 to make your 
request.

(g) Related Information

    (1) For more information about this AD, contact Frederick Zink, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; phone: 781-238-7779; fax: 781-238 7199; email: 
frederick.zink@faa.gov.
    (2) Refer to European Aviation Safety Agency Airworthiness 
Directive 2013-0109, dated May 22, 2013, for related information. 
You may examine the AD on the Internet at http://ad.easa.europa.eu/ad/2013-0109.
    (3) Thielert Aircraft Engines GmbH Service Bulletin No. TM TAE 
125-0022, dated August 8, 2012, which is not incorporated by 
reference in this AD, can be obtained from Thielert Aircraft Engines 
GmbH, using the contact information in paragraph (g)(4) of this AD.
    (4) For service information identified in this AD, contact 
Thielert Aircraft Engines GmbH, Platanenstrasse 14 D-09350, 
Lichtenstein, Germany, telephone: +49-37204-696-0; fax: +49-37204-
696-55; email: engines.com">info@centurion-engines.com. You may view this service 
information at the FAA, Engine & Propeller Directorate, 12 New 
England Executive Park, Burlington, MA. For information on the 
availability of this material at the FAA, call 781-238-7125.

    Issued in Burlington, Massachusetts, on July 25, 2013.
Thomas A. Boudreau,
Acting Assistant Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2013-18797 Filed 8-2-13; 8:45 am]
BILLING CODE 4910-13-P