Airworthiness Directives; Technify Motors GmbH Reciprocating Engines

[Federal Register Volume 82, Number 185 (Tuesday, September 26, 2017)]
[Rules and Regulations]
[Pages 44711-44713]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-20419]



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Federal Register / Vol. 82, No. 185 / Tuesday, September 26, 2017 / 
Rules and Regulations

[[Page 44711]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0241; Product Identifier 2017-NE-09-AD; Amendment 
39-19045; AD 2017-19-15]
RIN 2120-AA64


Airworthiness Directives; Technify Motors GmbH Reciprocating 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Technify Motors GmbH TAE 125-02 reciprocating engines. This AD requires 
replacement of the clutch with a dual mass flywheel. 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 issuing this AD to correct the unsafe condition on these products.

DATES: This AD becomes effective October 31, 2017.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of October 31, 
2017.

ADDRESSES: For service information identified in this final rule, 
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 and Propeller Standards Branch, 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 http://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 http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0241; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this 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 
Document Management Facility, U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Robert Green, Aerospace Engineer, ECO 
Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-
238-7754; fax: 781-238-7199; email: [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to the specified products. The 
NPRM was published in the Federal Register on May 5, 2017 (82 FR 
21144). The NPRM proposed to correct an unsafe condition for the 
specified products. The mandatory continuing airworthiness information 
(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 http://www.regulations.gov by searching for 
and locating Docket No. FAA-2017-0241.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM or on the determination of 
the cost to the public.

Revision to Economic Estimate

    We corrected the estimate of work hours from 0 in the NPRM to 4 in 
this final rule. This revision increases the estimate of the cost per 
product from $5,805 in the NPRM to $6,145 in this final rule. The total 
cost was correctly estimated at $24,580 in the NPRM and is therefore 
unchanged in this final rule.

Conclusion

    We reviewed the relevant data and determined that air safety and 
the public interest require adopting this final rule as proposed except 
for minor editorial changes and the minor revisions to the costs of 
compliance section noted above. We have determined that these minor 
changes:
    <bullet> Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
    <bullet> Do not add any additional burden upon the public than was 
already proposed in the NPRM.

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.

Costs of Compliance

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

[[Page 44712]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
               Action                         Labor cost            Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Replace clutch and gearbox.........  4 work-hours x $85 per hour          $5,805          $6,145         $24,580
                                      = $340.
----------------------------------------------------------------------------------------------------------------

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.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to engines, propellers, and 
appliances to the Manager, Engine and Propeller Standards Branch, 
Policy and Innovation Division.

Regulatory Findings

    We determined that this AD will not have federalism implications 
under Executive Order 13132. This AD will 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 AD:
    (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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 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):

2017-19-15 Technify Motors GmbH: Amendment 39-19045; Docket No. FAA-
2017-0241; Product Identifier 2017-NE-09-AD.

(a) Effective Date

    This AD becomes effective October 31, 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.

                                                   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 issuing 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.

[[Page 44713]]

(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)

    (1) The Manager, ECO Branch, 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 
ECO Branch, send it to the attention of the person identified in 
paragraph (i)(1) of this AD. You may email your request to: [email protected].
    (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.

(i) Related Information

    (1) For more information about this AD, contact Robert Green, 
Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: 781-238-7754; fax: 781-238-7199; email: 
[email protected].
    (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 http://www.regulations.gov 
by searching for and locating it in Docket No. FAA-2017-0241.

(j) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Technify Motors GmbH Service Bulletin No. SB TMG 125-1020 
P1, Initial Issue, dated January 27, 2016.
    (ii) Reserved.
    (3) For Technify Motors GmbH service information identified in 
this 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 
referenced service information at FAA, Engine and Propeller 
Standards Branch, 1200 District Avenue, Burlington, MA. For 
information on the availability of this material at the FAA, call 
781-238-7125.
    (4) You may view this service information at the National 
Archives and Records Administration (NARA). For information on the 
availability of this material at NARA, call 202-741-6030, or go to: 
http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Burlington, Massachusetts, on September 13, 2017.
Robert J. Ganley,
Manager, Engine and Propeller Standards Branch, Aircraft Certification 
Service.
[FR Doc. 2017-20419 Filed 9-25-17; 8:45 am]
BILLING CODE 4910-13-P

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