Airworthiness Directives; Technify Motors GmbH Reciprocating Engines, 21144-21146 [2017-09040]

Download as PDF 21144 Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules (f) Compliance Comply with this AD within the compliance times specified, unless already done. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (g) Verify Proper Operation of the Fuel Vent Check Valve on Each Wing Before further flight after the effective date of this AD, insert Steps 1 through 3 of Aviat Aircraft Inc. (Aviat) Mandatory Service Bulletin (MSB) No. 33, dated November 11, 2016, into the Limitations Section of the airplane flight manual (AFM). This insertion and the steps therein may be performed by the owner/operator (pilot) holding at least a private pilot certificate. The insertion of Steps 1 through 3 in the AFM must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9 (a)(1)–(4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. This AFM requirement mandates preflight checks of the fuel vent check valve on each wing for proper operation on the applicable airplanes identified in paragraph (c) of this AD. (h) Remove Inoperative Fuel Vent Check Valve During any check required in paragraph (g) of this AD, if one or both of the fuel vent check valves are not operating properly, before further flight, remove the inoperative valve following Steps 4 through 6 of Aviat MSB No. 33, dated November 11, 2016. (i) Replace Inoperative Fuel Vent Check Valve Before further flight after removing the inoperative fuel vent check valve required in paragraph (h) of this AD, replace it with an airworthy fuel vent check valve following Steps 8 and 9 of Aviat MSB No. 33, dated November 11, 2016. If both fuel vent check valves, Rapco P/N RA1798–00–1, are replaced with airworthy Duke P/N 1798–001 fuel vent check valves, the repetitive preflight checks required in paragraph (g) of this AD are terminated. jstallworth on DSK7TPTVN1PROD with PROPOSALS (j) Special Flight Permit Special flight permits are not necessary for the preflight checks. A special flight permit is allowed for this AD per 14 CFR 39.23 with limitations. Special flight permits are permitted for the airplane to be flown VFR only to a location where the inoperative fuel vent check valve can be removed and replaced. No special flight permits are allowed if both valves are found to be inoperative. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, Denver Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ACO, send it to the attention of the person identified in paragraph (l)(1) of this AD. VerDate Sep<11>2014 14:02 May 04, 2017 Jkt 241001 (l) Related Information (1) For more information about this AD, contact Richard R. Thomas, Aerospace Engineer, FAA, Denver ACO, 26805 East 68th Avenue, Room 214, Denver, Colorado 80249; phone: (303) 342–1085; fax: (303) 342–1088; email: richard.r.thomas@faa.gov. (2) For service information identified in this AD, contact Aviat Aircraft Inc., P.O. Box 1240, Afton, WY 83110; phone (307) 885– 3151; fax: (307) 885–9674; email: aviat@ aviataircraft.com; Internet: https:// aviataircraft.com. You may review this referenced service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call (816) 329–4148. Issued in Kansas City, Missouri, on April 27, 2017. Pat Mullen, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017–09041 Filed 5–4–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2017–0241; Directorate Identifier 2017–NE–09–AD] RIN 2120–AA64 Airworthiness Directives; Technify Motors GmbH Reciprocating Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Technify Motors GmbH TAE 125–02 reciprocating engines. This proposed AD was prompted by a loss of engine power in flight caused by oil leaking from the gearbox radial shaft sealing ring that contaminated the clutch. This proposed AD would require replacement of the clutch with a dual mass flywheel. We are proposing this AD to correct the unsafe condition on these products. DATES: We must receive comments on this NPRM by June 19, 2017. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. SUMMARY: PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 • Mail: Docket Management Facility, U.S. Department of Transportation, 1200 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 Technify Motors GmbH, Platanenstrasse 14, D– 09356 Sankt Egidien, Germany; phone: +49 37204 696 0; fax: +49 37204 696 29125; email: info@centurionengines.com. You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. It is also available on the Internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2017– 0241. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2017– 0241; 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 address for the Docket Office (phone: 800–647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Robert Green, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781–238–7754; fax: 781–238–7199; email: robert.green@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–2017–0241; Directorate Identifier 2017–NE–09–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 E:\FR\FM\05MYP1.SGM 05MYP1 21145 Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules proposed AD because of those comments. We will post all comments we receive, without change, to https:// 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. Discussion The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA AD 2017– 0034, dated February 20, 2017 (referred to hereinafter as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: A temporary power loss occurred during flight on a TAE 125–02-powered aeroplane. Following investigation, it was determined that an improper lapping of the gearbox driveshaft led to insufficient sealing of the gearbox radial shaft sealing ring, eventually resulting in oil leakage and oil contamination of the clutch. This condition, if not detected and corrected, could lead to permanent engine power loss, possibly resulting in reduced control of the aeroplane. You may obtain further information by examining the MCAI in the AD docket on the Internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2017– 0241. Related Service Information Under 1 CFR Part 51 Technify Motors GmbH has issued Service Bulletin (SB) No. SB TMG 125– 1020 P1, Initial Issue, dated January 27, 2016. The SB describes procedures for replacing the clutch with a dual mass flywheel. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. 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 replacing the clutch with a dual mass flywheel. Costs of Compliance We estimate that this proposed AD affects 4 engines installed on airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Action Labor cost Replace clutch and gearbox ........................... 0 work-hours × $85 per hour = $0 ................. jstallworth on DSK7TPTVN1PROD with PROPOSALS 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 VerDate Sep<11>2014 14:02 May 04, 2017 Jkt 241001 Parts cost 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. 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, PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 Cost per product $5,805 Cost on U.S. operators $5,805 $24,580 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): ■ Technify Motors GmbH: Docket No. FAA– 2017–0241; Directorate Identifier 2017– NE–09–AD. (a) Comments Due Date We must receive comments by June 19, 2017. (b) Affected ADs None. (c) Applicability This AD applies to Technify Motors GmbH TAE 125–02–99 (commercial designation CD–135, formerly Centurion 2.0) and TAE 125–02–114 (commercial designation CD– 155, formerly Centurion 2.0S) reciprocating engines with a gearbox serial number (S/N) listed in Figure 1 to paragraph (c) of this AD. E:\FR\FM\05MYP1.SGM 05MYP1 21146 Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules FIGURE 1 TO PARAGRAPH (c) OF THIS AD—GEARBOX S/NS 00095 00107 00139 00160 00171 00172 00179 00189 00224 00327 00396 00432 00459 00481 00564 00688 00697 00884 00923 00957 01019 01048 01081 01082 01106 01125 01236 01237 01241 01245 01288 01311 01314 01351 01357 01361 01388 01418 01427 01487 01529 01534 01561 01598 01634 01655 01704 01711 01755 01762 01786 01844 01881 01883 01884 01887 01891 01893 01904 01928 01933 01935 01951 01977 01978 01986 02026 02040 02041 02127 02141 02167 02189 02228 02289 02298 02304 02314 02316 02354 02432 (h) Alternative Methods of Compliance (AMOCs) (d) Subject Joint Aircraft System Component (JASC) Code 8510, Reciprocating Engine Front Section. (e) Reason This AD was prompted by a loss of engine power in flight caused by oil leaking from the gearbox radial shaft sealing ring that contaminated the clutch. We are proposing this AD to prevent failure of the clutch, loss of engine power in flight, and reduced control of the airplane. (f) Compliance (1) Comply with this AD within the compliance times specified, unless already done. (2) Within 55 flight hours after the effective date of this AD: (i) Replace the clutch with a dual mass flywheel. Use Technify Motors Service Bulletin (SB) No. SB TMG 125–1020 P1, Initial Issue, dated January 27, 2016, to do the replacement. (ii) Install a start phase monitoring system and software mapping in accordance with the requirements of FAA AD 2015–21–01 (80 FR 64314, October 23, 2015); and (iii) Inspect the rear radial shaft sealing ring on the gearbox for oil leakage in accordance with Figures 2 and 3 of Technify Motors SB No. SB TMG 125–1020 P1, Initial Issue, dated January 27, 2016. If an oil leak is detected, replace the gearbox with a part eligible for installation before the next flight. jstallworth on DSK7TPTVN1PROD with PROPOSALS (g) Installation Prohibition After the effective date of this AD: (1) Do not install an engine that is equipped with a clutch and has an affected gearbox listed in Figure 1 to paragraph (c) of this AD; (2) Do not install an affected gearbox on an engine unless it has passed the inspection required by paragraph (f)(2)(iii) of this AD; and (3) Do not install a clutch on an engine previously modified in accordance with the requirements of paragraph (f)(2) of this AD or already incorporating a dual mass flywheel. VerDate Sep<11>2014 14:02 May 04, 2017 Jkt 241001 DEPARTMENT OF TRANSPORTATION The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: ANE-AD-AMOC@faa.gov. Federal Aviation Administration (i) Related Information RIN 2120–AA64 (1) For more information about this AD, contact Robert Green, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781–238– 7754; fax: 781–238–7199; email: robert.green@faa.gov. (2) Refer to MCAI European Aviation Safety Agency AD 2017–0034, dated February 20, 2017, for more information. You may examine the MCAI in the AD docket on the Internet at https://www.regulations.gov by searching for and locating it in Docket No. FAA–2017–0241. (3) Technify Motors GmbH Service Bulletin SB No. SB TMG 125–1020 P1, Initial Issue, dated January 27, 2016, can be obtained from Technify Motors GmbH using the contact information in paragraph (i)(4) of this AD. (4) For service information identified in this proposed AD, contact Technify Motors GmbH, Platanenstrasse 14, D–09356 Sankt Egidien, Germany; phone: +49 37204 696 0; fax: +49 37204 696 29125; email: info@ centurion-engines.com. (5) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. Issued in Burlington, Massachusetts, on April 28, 2017. Robert J. Ganley, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2017–09040 Filed 5–4–17; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 14 CFR Part 39 [Docket No. FAA–2016–3697; Directorate Identifier 2015–NM–143–AD] Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period. AGENCY: We are revising an earlier proposed airworthiness directive (AD) that proposed to supersede AD 2011– 01–15, which applies to certain The Boeing Company Model 757–200, –200CB, and –300 series airplanes. AD 2011–01–15 requires repetitive inspections for cracking of the fuselage skin of the crown skin panel along the chem-milled step at certain stringers, and repair, if necessary. This action revises the notice of proposed rulemaking (NPRM) by reducing the compliance time for certain inspections. We are proposing this AD to address the unsafe condition on these products. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes. DATES: We must receive comments on this SNPRM by June 19, 2017. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. SUMMARY: E:\FR\FM\05MYP1.SGM 05MYP1

Agencies

[Federal Register Volume 82, Number 86 (Friday, May 5, 2017)]
[Proposed Rules]
[Pages 21144-21146]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-09040]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0241; Directorate Identifier 2017-NE-09-AD]
RIN 2120-AA64


Airworthiness Directives; Technify Motors 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 
certain Technify Motors GmbH TAE 125-02 reciprocating engines. This 
proposed AD was prompted by a loss of engine power in flight caused by 
oil leaking from the gearbox radial shaft sealing ring that 
contaminated the clutch. This proposed AD would require replacement of 
the clutch with a dual mass flywheel. We are proposing this AD to 
correct the unsafe condition on these products.

DATES: We must receive comments on this NPRM by June 19, 2017.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 1200 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 
Technify Motors GmbH, Platanenstrasse 14, D-09356 Sankt Egidien, 
Germany; phone: +49 37204 696 0; fax: +49 37204 696 29125; email: 
engines.com">info@centurion-engines.com. You may view this service information at 
the FAA, Engine & Propeller Directorate, 1200 District Avenue, 
Burlington, MA. For information on the availability of this material at 
the FAA, call 781-238-7125. It is also available on the Internet at 
https://www.regulations.gov by searching for and locating Docket No. 
FAA-2017-0241.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0241; 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 address for the Docket Office (phone: 800-
647-5527) is in the ADDRESSES section. Comments will be available in 
the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Robert Green, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 
District Avenue, Burlington, MA 01803; phone: 781-238-7754; fax: 781-
238-7199; email: robert.green@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-2017-0241; 
Directorate Identifier 2017-NE-09-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

[[Page 21145]]

proposed AD because of those comments.
    We will post all comments we receive, without change, to https://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.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD 2017-0034, dated February 20, 2017 (referred to hereinafter as ``the 
MCAI''), to correct an unsafe condition for the specified products.
    The MCAI states:

    A temporary power loss occurred during flight on a TAE 125-02-
powered aeroplane. Following investigation, it was determined that 
an improper lapping of the gearbox driveshaft led to insufficient 
sealing of the gearbox radial shaft sealing ring, eventually 
resulting in oil leakage and oil contamination of the clutch.
    This condition, if not detected and corrected, could lead to 
permanent engine power loss, possibly resulting in reduced control 
of the aeroplane.

    You may obtain further information by examining the MCAI in the AD 
docket on the Internet at https://www.regulations.gov by searching for 
and locating Docket No. FAA-2017-0241.

Related Service Information Under 1 CFR Part 51

    Technify Motors GmbH has issued Service Bulletin (SB) No. SB TMG 
125-1020 P1, Initial Issue, dated January 27, 2016. The SB describes 
procedures for replacing the clutch with a dual mass flywheel. This 
service information is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in the ADDRESSES section.

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 replacing the 
clutch with a dual mass flywheel.

Costs of Compliance

    We estimate that this proposed AD affects 4 engines installed on 
airplanes of U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Replace clutch and gearbox............  0 work-hours x $85 per            $5,805          $5,805         $24,580
                                         hour = $0.
----------------------------------------------------------------------------------------------------------------

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.

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):

Technify Motors GmbH: Docket No. FAA-2017-0241; Directorate 
Identifier 2017-NE-09-AD.

(a) Comments Due Date

    We must receive comments by June 19, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Technify Motors GmbH TAE 125-02-99 
(commercial designation CD-135, formerly Centurion 2.0) and TAE 125-
02-114 (commercial designation CD-155, formerly Centurion 2.0S) 
reciprocating engines with a gearbox serial number (S/N) listed in 
Figure 1 to paragraph (c) of this AD.

[[Page 21146]]



                               Figure 1 to Paragraph (c) of This AD--Gearbox S/Ns
----------------------------------------------------------------------------------------------------------------
 
----------------------------------------------------------------------------------------------------------------
     00095        00107        00139        00160        00171        00172       00179       00189       00224
----------------------------------------------------------------------------------------------------------------
     00327        00396        00432        00459        00481        00564       00688       00697       00884
----------------------------------------------------------------------------------------------------------------
     00923        00957        01019        01048        01081        01082       01106       01125       01236
----------------------------------------------------------------------------------------------------------------
     01237        01241        01245        01288        01311        01314       01351       01357       01361
----------------------------------------------------------------------------------------------------------------
     01388        01418        01427        01487        01529        01534       01561       01598       01634
----------------------------------------------------------------------------------------------------------------
     01655        01704        01711        01755        01762        01786       01844       01881       01883
----------------------------------------------------------------------------------------------------------------
     01884        01887        01891        01893        01904        01928       01933       01935       01951
----------------------------------------------------------------------------------------------------------------
     01977        01978        01986        02026        02040        02041       02127       02141       02167
----------------------------------------------------------------------------------------------------------------
     02189        02228        02289        02298        02304        02314       02316       02354       02432
----------------------------------------------------------------------------------------------------------------

(d) Subject

    Joint Aircraft System Component (JASC) Code 8510, Reciprocating 
Engine Front Section.

(e) Reason

    This AD was prompted by a loss of engine power in flight caused 
by oil leaking from the gearbox radial shaft sealing ring that 
contaminated the clutch. We are proposing this AD to prevent failure 
of the clutch, loss of engine power in flight, and reduced control 
of the airplane.

(f) Compliance

    (1) Comply with this AD within the compliance times specified, 
unless already done.
    (2) Within 55 flight hours after the effective date of this AD:
    (i) Replace the clutch with a dual mass flywheel. Use Technify 
Motors Service Bulletin (SB) No. SB TMG 125-1020 P1, Initial Issue, 
dated January 27, 2016, to do the replacement.
    (ii) Install a start phase monitoring system and software 
mapping in accordance with the requirements of FAA AD 2015-21-01 (80 
FR 64314, October 23, 2015); and
    (iii) Inspect the rear radial shaft sealing ring on the gearbox 
for oil leakage in accordance with Figures 2 and 3 of Technify 
Motors SB No. SB TMG 125-1020 P1, Initial Issue, dated January 27, 
2016. If an oil leak is detected, replace the gearbox with a part 
eligible for installation before the next flight.

(g) Installation Prohibition

    After the effective date of this AD:
    (1) Do not install an engine that is equipped with a clutch and 
has an affected gearbox listed in Figure 1 to paragraph (c) of this 
AD;
    (2) Do not install an affected gearbox on an engine unless it 
has passed the inspection required by paragraph (f)(2)(iii) of this 
AD; and
    (3) Do not install a clutch on an engine previously modified in 
accordance with the requirements of paragraph (f)(2) of this AD or 
already incorporating a dual mass flywheel.

(h) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
for this AD. Use the procedures found in 14 CFR 39.19 to make your 
request. You may email your request to: ANE-AD-AMOC@faa.gov.

(i) Related Information

    (1) For more information about this AD, contact Robert Green, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; 
phone: 781-238-7754; fax: 781-238-7199; email: robert.green@faa.gov.
    (2) Refer to MCAI European Aviation Safety Agency AD 2017-0034, 
dated February 20, 2017, for more information. You may examine the 
MCAI in the AD docket on the Internet at https://www.regulations.gov 
by searching for and locating it in Docket No. FAA-2017-0241.
    (3) Technify Motors GmbH Service Bulletin SB No. SB TMG 125-1020 
P1, Initial Issue, dated January 27, 2016, can be obtained from 
Technify Motors GmbH using the contact information in paragraph 
(i)(4) of this AD.
    (4) For service information identified in this proposed AD, 
contact Technify Motors GmbH, Platanenstrasse 14, D-09356 Sankt 
Egidien, Germany; phone: +49 37204 696 0; fax: +49 37204 696 29125; 
email: engines.com">info@centurion-engines.com.
    (5) You may view this service information at the FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA. For 
information on the availability of this material at the FAA, call 
781-238-7125.

    Issued in Burlington, Massachusetts, on April 28, 2017.
Robert J. Ganley,
Acting Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-09040 Filed 5-4-17; 8:45 am]
BILLING CODE 4910-13-P
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