Federal Register / Vol. 79, No. 181 / Thursday, September 18, 2014 / Proposed Rules 56025 

specified in ALS document number 02334, 

issue 4, dated May 31, 2014, into your FAAaccepted maintenance program (maintenance 

manual). 

(4) Actions new to this AD for all airplanes: 

(i) For airplanes with Halon Fire 

Extinguishers that have not yet reached the 

10 year life limit after the effective date of 

this AD, when the Halon Fire Extinguisher 

reaches its life limit of 10 years, before 

further flight, replace with an airworthy 

Halon Fire Extinguisher following Chapter 

04–00–00 of the AMM, document number 

01975, issue 19, dated May 31, 2014, of the 

Pilatus PC–6 Maintenance Manual; or ALS 

document number 02334, issue 4, dated May 

31, 2014; as applicable. 

(ii) For airplanes with Halon Fire 

Extinguishers that have reached the 10 year 

life limit on or before the effective date of 

this AD, within the next 30 days after the 

effective date of this AD or within the next 

10 hours TIS after the effective date of this 

AD, whichever occurs first, replace with an 

airworthy Halon Fire Extinguisher following 

Chapter 04–00–00 of the AMM, document 

number 01975, issue 19, dated May 31, 2014, 

of the Pilatus PC–6 Maintenance Manual; or 

ALS document number 02334, issue 4, dated 

May 31, 2014; as applicable. 

(iii) Repetitively, after replacing the 

airplanes Halon Fire Extinguisher as required 

in paragraphs (f)(4)(i) or (f)(4)(ii), within 10 

years after each last replacement, replace 

with an airworthy Halon Fire Extinguisher. 

(g) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Standards Office, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. Send information to 

ATTN: Doug Rudolph, Aerospace Engineer, 

FAA, Small Airplane Directorate, 901 Locust, 

Room 301, Kansas City, Missouri 64106; 

telephone: (816) 329–4059; fax: (816) 329– 

4090; email: doug.rudolph@faa.gov. Before 

using any approved AMOC on any airplane 

to which the AMOC applies, notify your 

appropriate principal inspector (PI) in the 

FAA Flight Standards District Office (FSDO), 

or lacking a PI, your local FSDO. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(h) Related Information 

Refer to European Aviation Safety Agency 

(EASA) AD No.: 2014–0181, dated July 31, 

2014, for related information. You may 

examine the MCAI on the Internet at http:// 

www.regulations.gov by searching for and 

locating Docket No. FAA–2041–0717. For 

service information related to this AD, 

contact PILATUS AIRCRAFT LTD., Customer 

Liaison Manager, CH–6371 STANS, 

Switzerland; telephone: +41 (0) 41 619 65 80; 

fax: +41 (0) 41 619 65 76; Internet: http://

www.pilatus-aircraft.com; email: fodermatt@

pilatus-aircraft.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 

September 12, 2014. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2014–22273 Filed 9–17–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0561; Directorate 

Identifier 2014–NE–12–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 Trent 768– 

60, 772–60, and 772B–60 turbofan 

engines. This proposed AD was 

prompted by fractures of the highpressure/intermediate-pressure (HP/IP) 

turbine support internal oil feed tube. 

This proposed AD would require 

inspection of the oil feed tube sealing 

sleeve and removal of those oil feed 

tube sealing sleeves that fail inspection. 

We are proposing this AD to prevent 

failure of the HP/IP turbine support 

internal oil feed tube, which could 

result in uncontained engine failure and 

damage to the airplane. 

DATES: We must receive comments on 

this proposed AD by November 17, 

2014. 

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. 

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–2014– 

0561; 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: 

Wego Wang, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7134; fax: 781–238– 

7199; email: wego.wang@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–2014–0561; Directorate Identifier 

2014–NE–12–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– 

0168, dated July 16, 2014 (referred to 

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

unsafe condition for the specified 

products. The MCAI states: 

There have been nine occurrences of high oil 

consumption, caused by fracture of the High/ 

Intermediate Pressure (HP/IP) turbine 

support internal oil feed tube Part Number 

(P/N) FW45909. 

The oil feed tube threaded end adaptor and 

sealing sleeve P/N FW15003 are designed to 

form a sliding joint which, if restrained, can 

compress the oil feed tube during thermal 

contraction of the turbine casing at the end 


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56026 Federal Register / Vol. 79, No. 181 / Thursday, September 18, 2014 / Proposed Rules 

of the flight cycle. On each subsequent flight, 

the thermal growth and contraction of the 

turbine casing relative to the oil tube, during 

the heating and cooling phases of the flight 

cycle, apply a load cycle to the tube, which 

may lead to low cycle fatigue fracture. 

This AD requires removal of certain 

HP/IP turbine support internal oil feed 

tube sealing sleeves to prevent oil 

exhaustion that could result in 

uncontained engine failure and damage 

to the airplane. 

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–2014– 

0561. 

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. 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 a one-time on-wing or inshop inspection of the affected engines 

and removal from service of all affected 

P/N FW15003 oil feed tube sealing 

sleeves. 

Costs of Compliance 

We estimate that this proposed AD 

affects 69 engines installed on airplanes 

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

would take about 8.5 hours per engine 

to comply with this proposed AD. The 

average labor rate is $85 per hour. Based 

on these figures, we estimate the cost of 

this proposed AD on U.S. operators to 

be $49,853. 

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. Amend § 39.13 by adding the 

following new airworthiness directive 

(AD): 

Rolls-Royce plc: Docket No. FAA–2014– 

0561; Directorate Identifier 2014–NE– 

12–AD. 

(a) Comments Due Date 

We must receive comments by November 

17, 2014. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce plc (RR) 

RB211 Trent 768–60, 772–60, and 772B–60 

turbofan engines serial numbers 41693– 

42309 inclusive, 42313, 42318, 42319, 42320, 

42328, and 42330 with high-pressure/

intermediate-pressure (HP/IP) turbine 

support internal oil feed tube sealing sleeve 

part number (P/N) FW15003 installed that is 

marked with the prefix ‘‘B/N’’ followed by a 

six digit batch number, and does not contain 

the marking 102013, 112013 or 102013L. 

(d) Reason 

This AD was prompted by fractures of the 

HP/IP turbine support internal oil feed tube. 

We are issuing this AD to prevent failure of 

the HP/IP turbine support internal oil feed 

tube, which could result in uncontained 

engine failure and damage to the airplane. 

(e) Actions and Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) Within 6 months after the effective date 

of this AD, perform on-wing or in-shop 

inspection for, and remove from service, any 

affected HP/IP turbine support internal oil 

feed tube sealing sleeve. 

(2) Remove from service any HP/IP turbine 

support internal oil feed tube sealing sleeve 

on which markings cannot be sufficiently 

identified to determine whether said sealing 

sleeve is part of the affected population. 

(3) From the effective date of this AD, you 

may install on engines HP/IP turbine support 

internal oil feed tube sealing sleeves, P/N 

FW15003, that are marked with the prefix 

‘‘B/N’’ followed by a six digit batch number, 

provided that the part is marked with 

102013, 112013 or 102013L. 

(f) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs to this AD. Use 

the procedures found in 14 CFR 39.19 to 

make your request. 

(g) Related Information 

(1) For more information about this AD, 

contact Wego Wang, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7134; fax: 781–238–7199; 

email: wego.wang@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2014–0168, dated July 16, 

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–2014–0561. 

Issued in Burlington, Massachusetts, on 

September 9, 2014. 

Richard P. Warren, 

Acting Assistant Directorate Manager, Engine 

& Propeller Directorate, Aircraft Certification 

Service. 

[FR Doc. 2014–22351 Filed 9–17–14; 8:45 am] 

BILLING CODE 4910–13–P 


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