Federal Register / Vol. 80, No. 82 / Wednesday, April 29, 2015 / Proposed Rules 23741 

Compliance), those steps must be done to 

comply with this AD; any steps that are not 

identified as RC are recommended. Those 

steps that are not identified as RC may be 

deviated from using accepted methods in 

accordance with the operator’s maintenance 

or inspection program without obtaining 

approval of an AMOC provided the steps 

identified as RC can be done and the airplane 

can be put back in a serviceable condition. 

Any substitutions or changes to steps 

identified as RC require approval of an 

AMOC. 

(i) Related Information 

(1) For more information about this AD, 

contact Stanley Chen, Aerospace Engineer, 

Cabin Safety and Environmental Systems 

Branch, ANM–150S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

Renton, WA 98057–3356; phone: 425–917– 

6585; fax: 425–917–6590; email: 

stanley.chen@faa.gov. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P. O. Box 3707, MC 2H–65, 

Seattle, WA 98124–2207; telephone 206– 

544–5000, extension 1; fax 206–766–5680; 

Internet https://www.myboeingfleet.com. You 

may view this referenced service information 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, WA. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

Issued in Renton, Washington, on April 13, 

2015. 

Michael Kaszycki, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2015–09793 Filed 4–28–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–0095; Directorate 

Identifier 2015–NE–01–AD] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc 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 certain 

Rolls-Royce plc (RR) RB211–524B–02, 

RB211–524B2–19, RB211–524B3–02, 

RB211–524B4–02, RB211–524B4–D–02, 

RB211–524C2–19, RB211–524D4–19, 

RB211–524D4–39, and RB211–524D4X– 

19 turbofan engines. This proposed AD 

was prompted by several failures of 

affected high-pressure turbine (HPT) 

blades. This proposed AD would require 

removing affected HPT blades. We are 

proposing this AD to prevent failure of 

the HPT blade, which could lead to 

failure of one or more engines, loss of 

thrust control, and damage to the 

airplane. 

DATES: We must receive comments on 

this proposed AD by June 29, 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 AD, contact Rolls-Royce plc, 

Corporate Communications, P.O. Box 

31, Derby, England, DE248BJ; phone: 

011–44–1332–242424; fax: 011–44– 

1332–249936; email: http://www.rollsroyce.com/contact/civil_team.jsp; 

Internet: https://www.aeromanager.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 by searching for 

and locating Docket No. FAA–2015– 

0095; 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: 

Katheryn Malatek, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7747; fax: 781–238– 

7199; email: katheryn.malatek@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–2015–0095; Directorate Identifier 

2015–NE–01–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. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA AD 2014– 

0250, dated November 19, 2014 

(referred to hereinafter as ‘‘the MCAI’’), 

to correct an unsafe condition for the 

specified products. The MCAI states: 

There were a number of pre-MOD/SB 72– 

7730 High Pressure Turbine (HPT) blade 

failures, with some occurring within a 

relatively short time. Engineering analysis 

carried out by RR on those occurrences 

indicates that certain pre-MOD/SB 72–7730 

blades, Part Number (P/N) UL32958 and P/ 

N UL21691 (hereafter referred to as ‘affected 

HPT blade’), with an accumulated life of 

6500 flight hours (FH) since new or more, 

have an increased risk of in-service failure. 

This condition, if not corrected, could lead 

to HPT blade failure, release of debris and 

consequent (partial or complete) loss of 

engine power, 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–2015– 

0095. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of the United 

Kingdom, 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 removal of 

the affected HPT blades. 

mstockstill on DSK4VPTVN1PROD with PROPOSALS

23742 Federal Register / Vol. 80, No. 82 / Wednesday, April 29, 2015 / Proposed Rules 

Costs of Compliance 

We estimate that this proposed AD 

affects 6 engines installed on airplanes 

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

would take about 4 hours per engine to 

comply with this proposed AD. The 

average labor rate is $85 per hour. Prorated cost of required parts is about 

$250,000 per engine. Based on these 

figures, we estimate the cost of this 

proposed AD on U.S. operators to be 

$1,502,040. 

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 plc: Docket No. FAA–2015– 

0095; Directorate Identifier 2015–NE– 

01–AD. 

(a) Comments Due Date 

We must receive comments by June 29, 

2015. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Rolls-Royce plc (RR) 

RB211–524B–02, RB211–524B2–19, RB211– 

524B3–02, RB211–524B4–02, RB211–524B4– 

D–02, RB211–524C2–19, RB211–524D4–19, 

RB211–524D4–39, and RB211–524D4X–19 

turbofan engines with high-pressure turbine 

(HPT) blades, part numbers (P/Ns) UL32958 

and UL21691, installed. 

(d) Reason 

This AD was prompted by several failures 

of affected HPT blades. We are issuing this 

AD to prevent failure of the HPT blade, 

which could lead to failure of one or more 

engines, loss of thrust control, and damage to 

the airplane. 

(e) Actions and Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

After the effective date of this AD, within 

2 months or before exceeding 6,500 flight 

hours since first installation of HPT blades, 

P/Ns UL32958, and UL21691, on an engine, 

whichever occurs later, remove all affected 

HPT blades from service. 

(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 Katheryn Malatek, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; phone: 781–238–7747; fax: 781–238– 

7199; email: katheryn.malatek@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2014–0250, dated 

November 19, 2014, 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–2015–0095. 

Issued in Burlington, Massachusetts, on 

April 22, 2015. 

Colleen M. D’Alessandro, 

Assistant Directorate Manager, Engine & 

Propeller Directorate, Aircraft Certification 

Service. 

[FR Doc. 2015–09815 Filed 4–28–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF COMMERCE 

National Oceanic and Atmospheric 

Administration 

15 CFR Part 922 

RIN 0648–BD97 

Proposed Expansion, Regulatory 

Revision and New Management Plan 

for the Public Hearings 

AGENCY: Office of National Marine 

Sanctuaries (ONMS), National Ocean 

Service (NOS), National Oceanic and 

Atmospheric Administration (NOAA), 

Department of Commerce (DOC). 

ACTION: Notice of public hearings. 

SUMMARY: On March 26, 2015, NOAA 

published a proposed rule in the 

Federal Register proposing to expand 

the boundaries and scope of the 

Hawaiian Islands Humpback Whale 

National Marine Sanctuary (HIHWNMS) 

(80 FR 16224). This document adds two 

additional hearings to the public 

hearings listed in the proposed rule. The 

end of the scoping period remains June 

19, 2015. 

DATES: NOAA will accept public 

comments on the notice of proposed 

rulemaking published at 80 FR 16224 

(March 26, 2015), the draft 

environmental impact statement, and 

draft management plan through June 19, 

2015. 

ADDRESSES: The instructions for 

submitting comments are detailed in the 

proposed rule published on March 26, 

2015 (80 FR 16224). You may submit 

comments on this document, identified 

by NOAA–NOS–2015–0028, by any of 

the following methods: 

• Electronic Submission: Submit all 

electronic public comments via the 

Federal e-Rulemaking Portal. Go to 

www.regulations.gov/

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