This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by

the Superintendent of Documents.

Rules and Regulations Federal Register

44711 

Vol. 82, No. 185 

Tuesday, September 26, 2017 

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: info@centurionengines.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: 

robert.green@faa.gov. 

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: 

• Are consistent with the intent that 

was proposed in the NPRM for 

correcting the unsafe condition; and 

• 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: 


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44712 Federal Register / Vol. 82, No. 185 / Tuesday, September 26, 2017 / Rules and Regulations 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replace clutch and gearbox ... 4 work-hours × $85 per hour = $340 ..................................... $5,805 $6,145 $24,580 

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 

■ 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): 

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. 


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Federal Register / Vol. 82, No. 185 / Tuesday, September 26, 2017 / Rules and Regulations 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: ANE-AD-AMOC@faa.gov. 

(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: 

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 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: 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/ibrlocations.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 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0140; Product 

Identifier 2017–NE–05–AD; Amendment 39– 

19048; AD 2017–19–18] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Turbofan 

Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Rolls-Royce Deutschland Ltd & Co KG 

(RRD) model Tay 620–15 turbofan 

engines. This AD requires reducing the 

maximum approved life limit. This AD 

was prompted by RRD recalculating the 

life limit for certain high-pressure 

compressor (HPC) stage 12 rotor disks. 

We are issuing this AD to correct the 

unsafe condition on these products. 

DATES: This AD becomes effective 

October 31, 2017. 

ADDRESSES: For service information 

identified in this final rule, contact 

Rolls-Royce Deutschland Ltd & Co KG, 

Eschenweg 11–15827 Dahlewitz, 

Blankenfelde-Mahlow, Germany; phone: 

+49 0 33–7086–1944; fax: +49 0 33– 

7086–3276. You may view this service 

information at the FAA, Engine and 

Propeller Standards Branch, Policy and 

Innovation Division, 1200 District 

Avenue, Burlington, MA 01803. 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– 

0140. 

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– 

0140; 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, FAA, 

ECO Branch, Compliance and 

Airworthiness Division, 1200 District 

Avenue, Burlington, MA 01803; phone: 

781–238–7754; fax: 781–238–7199; 

email: robert.green@faa.gov. 

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 26, 2017 (82 FR 24257). 

The NPRM proposed to correct an 

unsafe condition for the specified 

products. The MCAI states: 

Based on revised stress analysis and life 

calculation, Rolls-Royce Deutschland (RRD) 

determined new provisional life limits for 

HPC stage 12 rotor disc Part Number (P/N) 

JR18449, reducing the maximum approved 

life limit defined in the Tay 620–15 and Tay 

620–15/20 engine Time Limits Manual 

(TLM), Chapter 05–10–01, Task 05–10–01– 

800–000, currently at revision dated 15 

September 2014. Failure to replace a HPC 

stage 12 rotor disc P/N JR18449, before 

exceeding the thresholds defined by this AD, 

could lead to an uncontained HPC stage 12 

rotor disc failure, possibly resulting in 

damage to, and/or 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– 

0140. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM (82 

FR 24257, May 26, 2017) or on the 

determination of the cost to the public. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting this AD 

as proposed. 


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