This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

32315 

Vol. 80, No. 109 

Monday, June 8, 2015 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–1014; Directorate 

Identifier 2015–NE–14–AD] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Turbofan 

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 

Rolls-Royce Deutschland Ltd & Co KG 

(RRD) Tay 650–15 and Tay 651–54 

turbofan engines. This proposed AD was 

prompted by RRD updating the life 

limits for certain high-pressure turbine 

(HPT) disks. This proposed AD would 

require reducing the cyclic life limits for 

certain HPT disks. We are proposing 

this AD to prevent failure of the HPT 

disk, which could result in uncontained 

disk release, damage to the engine, and 

damage to the airplane. 

DATES: We must receive comments on 

this proposed AD by August 7, 2015. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://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 Rolls-Royce 

Deutschland Ltd & Co KG, Eschenweg 

11, Dahlewitz, 15827 BlankenfeldeMahlow, Germany; phone: 49 0 33– 

7086–1064; fax: 49 0 33–7086–3276. 

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 by searching for 

and locating Docket No. FAA–2015– 

1014; 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: 

Philip Haberlen, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7770; fax: 781–238– 

7199; email: philip.haberlen@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this NPRM. Send your comments to an 

address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2015–1014; Directorate Identifier 2015– 

NE–14–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this NPRM. We will consider 

all comments received by the closing 

date and may amend this NPRM 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 we receive 

about this NPRM. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA AD 2015– 

0056, dated March 31, 2015 (referred to 

hereinafter as ‘‘the MCAI’’), to correct an 

unsafe condition for the specified 

products. The MCAI states: 

A recent analysis identified the need to 

reduce the existing cyclic life limit of certain 

high-pressure turbine (HPT) stage 1 discs, 

part number (P/N) JR32013, as compared 

with the values published in RRD Tay 650 

and Tay 651 engine Time Limit Manuals 

(TLM), Chapter 05–10–01. 

Operation of the affected HPT Stage 1 disc 

P/N JR32013 beyond the reduced cyclic life 

limit would likely result in an unsafe 

condition. 

This condition, if not corrected, could lead 

to part failure, possibly resulting in release of 

high energy debris with consequent damage 

to the aeroplane and/or injury to the 

occupants. 

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–2015– 

1014. 

Related Service Information Under 1 

CFR Part 51 

RRD has issued Alert NonModification Service Bulletin No. TAY– 

72–A1821, Revision 1, dated March 26, 

2015. The service information describes 

procedures for verifying if an applicable 

HPT stage 1 disk is installed and for 

removing the HPT stage 1 disk from 

service. 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 of this NPRM. 

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 

NPRM 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. 

Costs of Compliance 

We estimate that this proposed AD 

affects 23 engines installed on airplanes 

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32316 Federal Register / Vol. 80, No. 109 / Monday, June 8, 2015 / Proposed Rules 

of U.S. registry. We also estimate that it 

would take about 0.5 hours per engine 

to comply with this proposed AD. The 

average labor rate is $85 per hour. We 

estimate that the pro-rated cost of the 

life reduction would be about $23,053 

per engine. Based on these figures, we 

estimate the cost of this proposed AD on 

U.S. operators to be $531,197. 

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 

■ 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): 

Rolls-Royce Deutschland Ltd & Co KG: 

Docket No. FAA–2015–1014; Directorate 

Identifier 2015–NE–14–AD. 

(a) Comments Due Date 

We must receive comments by August 7, 

2015. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Rolls-Royce 

Deutschland Ltd & Co KG (RRD) Tay 650–15 

and Tay 651–54 turbofan engines with highpressure turbine (HPT) stage 1 disk, part 

number (P/N) JR32013, installed. 

(d) Reason 

This AD was prompted by RRD updating 

the life limits for certain HPT disks. We are 

issuing this AD to prevent failure of the HPT 

disk, which could result in uncontained disk 

release, damage to the engine, and damage to 

the airplane. 

(e) Actions and Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) After the effective date of this AD, use 

the Accomplishment Instruction, paragraph 

3.A.(1)(b) of RRD Alert Non-Modification 

Service Bulletin (NMSB) No. TAY–72– 

A1821, Revision 1, dated March 26, 2015 to 

calculate the HPT stage 1 disk consumed 

cyclic life of the affected engines. 

(2) Remove the HPT stage 1 disk, P/N 

JR32013, from service within 100 flight 

cycles after the effective date of this AD or 

before exceeding the cyclic life limit as 

defined below, whichever occurs later: 

(i) For RRD Tay 650–15 engines and Flight 

Plan A, the life limit is 18,900 flight cycles 

since new (FCSN). 

(ii) For RRD Tay 650–15 engines and Flight 

Plan B, the life limit is 15,500 FCSN. 

(iii) For RRD Tay 650–15 engines and 

Flight Plan C, the life limit is 11,500 FCSN. 

(iv) For RRD Tay 650–15 engines and 

Flight Plan D, the life limit is 9,300 FCSN. 

(v) For RRD Tay 651–54 engines regardless 

of flight plan or profile, the life limit is 

10,873 FCSN. 

(f) 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. 

(g) Related Information 

(1) For more information about this AD, 

contact Philip Haberlen, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7770; fax: 781–238–7199; 

email: philip.haberlen@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2015–0056, dated March 

31, 2015, 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–2015–1014. 

(3) RRD Alert NMSB No. TAY–72–A1821, 

Revision 1, dated March 26, 2015, can be 

obtained from RRD, using the contact 

information in paragraph (g)(4) of this 

proposed AD. 

(4) For service information identified in 

this proposed AD, contact Rolls-Royce 

Deutschland Ltd & Co KG, Eschenweg 11, 

Dahlewitz, 15827 Blankenfelde-Mahlow, 

Germany; phone: 49 0 33–7086–1064; fax: 49 

0 33–7086–3276. 

(5) 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 

May 12, 2015. 

Colleen M. D’Alessandro, 

Assistant Directorate Manager, Engine & 

Propeller Directorate, Aircraft Certification 

Service. 

[FR Doc. 2015–13743 Filed 6–5–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–0869; Directorate 

Identifier 2015–NE–11–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Turbofan 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 Pratt 

& Whitney (PW) PW4164, PW4168, 

PW4168A, PW4164–1D, PW4168–1D, 

PW4168A–1D, and PW4170 turbofan 

engines. This proposed AD was 

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