Federal Register / Vol. 76, No. 53 / Friday, March 18, 2011 / Rules and Regulations 14797 

products identified in this rulemaking 

action. 

Regulatory Findings 

We have 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 that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, 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, 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 

removing airworthiness directive (AD) 

2009–04–17, Amendment 39–15823 (74 

FR 8735; February 26, 2009), and adding 

the following new AD: 

2011–07–01 General Electric Company: 

Amendment 39–16638 ; Docket No. 

FAA–2006–24145; Directorate Identifier 

2006–NE–06–AD. 

Effective Date 

(a) This airworthiness directive (AD) is 

effective April 22, 2011. 

Affected ADs 

(b) This AD supersedes AD 2009–04–17, 

Amendment 39–15823. 

Applicability 

(c) This AD applies to the following 

engines with a long fixed core exhaust nozzle 

(LFCEN) assembly forward centerbody, part 

number (P/N) 1313M55G01 or G02, P/N 

9076M28G05, G06, G08, G09, or G10, P/N 

9076M82G01 or G03, and aft centerbody P/ 

N 1313M56G01, or P/N 9076M46G02, G04, or 

G05, installed in: 

(1) General Electric Company (GE) CF6– 

45A, CF6–45A2, CF6–50A, CF6–50C, CF6– 

50CA, CF6–50C1, CF6–50C2, CF6–50C2B, 

CF6–50C2D, CF6–50E, CF6–50E1, CF6–50E2, 

and CF6–50E2B turbofan engines, including 

engines marked on the engine data plate as 

CF6–50C2–F and CF6–50C2–R. 

(2) These engines are installed on, but not 

limited to, Airbus A300 series, Boeing 747– 

200B, 747–200C, 747–200F, 747–300 and 

747SR, McDonnell Douglas DC–10–15, DC– 

10–30, DC–10–30F (KC–10A, KDC–10), and 

MD–10–30F airplanes. 

Unsafe Condition 

(d) This AD was prompted by the 

discovery of more LFCEN forward and aft 

centerbody P/Ns that require replacement. 

We are issuing this AD to prevent the 

forward and aft centerbody of the LFCEN 

assembly from separating from the engine, 

causing damage to the engine, and damage to 

the airplane. 

Compliance 

(e) Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) Within 18 months after the effective 

date of this AD, replace forward centerbody, 

P/N 1313M55G01 and G02, P/N 

9076M28G05, G06, G08, G09, and G10, P/N 

9076M82G01 and G03, and aft centerbody 

P/N 1313M56G01, P/N 9076M46G02, G04, 

and G05 with a forward and aft centerbody 

that has been modified using the 

Accomplishment Instructions, Section 3, of 

GE Service Bulletin (SB) No. CF6–50 S/B 78– 

0244, Revision 1, dated March 13, 2008, 

CF6–50 S/B 78–0244, dated July 30, 2007, or 

CF6–50 S/B 78–0242, dated September 26, 

2005. 

Centerbody Installation Prohibition 

(2) After 18 months from the effective date 

of this AD, do not install any engine with 

forward centerbody, P/N 1313M55G01 or 

G02, P/N 9076M28G05, G06, G08, G09, or 

G10, P/N 9076M82G01 or G03, or aft 

centerbody P/N 1313M56G01, P/N 

9076M46G02, G04, or G05 on any airplane. 

Alternative Methods of Compliance 

(AMOCs) 

(f) The Manager, Engine Certification 

Office, FAA, may approve AMOCs for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. 

Related Information 

(g) For more information about this AD, 

contact Tomasz Rakowski, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine & Propeller Directorate; phone: 781– 

238–7735; fax: 781–238–7199; e-mail: 

tomasz.rakowski@faa.gov. 

(h) For service information identified in 

this AD, contact GE–Aviation M/D Rm. 285, 

One Neumann Way, Cincinnati, OH 45215, 

telephone 513–552–3272; e-mail: 

geae.aoc@ge.com. You may review copies of 

the referenced 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 

March 14, 2011. 

Peter A. White, 

Acting Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–6300 Filed 3–17–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0176; Directorate 

Identifier 2011–NE–05–AD; Amendment 39– 

16636; AD 2011–06–11] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc (RR) RB211–Trent 900 Series 

Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

issued by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

An uncontained engine failure has recently 

occurred on a Rolls-Royce RB211 Trent 900 

involving release of high energy debris and 

resulting in damage to the aeroplane. 

Analysis of the available elements from the 

incident investigation shows that an oil fire 

in the High Pressure/Intermediate Pressure 

(HP/IP) structure cavity may have initiated a 

sequence of events leading to rupture of the 

drive arm of the IP Turbine (IPT) disc and 

subsequent overspeed and burst of that same 

disc. 

We are issuing this AD to prevent 

overspeed of the intermediate pressure 

turbine, which could result in loss of 

disc integrity, an uncontained failure of 

the engine, and damage to the airplane. 

DATES: This AD becomes effective April 

4, 2011. 

We must receive comments on this 

AD by April 18, 2011. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: U.S. Department of 

Transportation, 1200 New Jersey 

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14798 Federal Register / Vol. 76, No. 53 / Friday, March 18, 2011 / Rules and Regulations 

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; 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 AD, the regulatory 

evaluation, any comments received, and 

other information. The street address for 

the Docket Operations office (phone: 

(800) 647–5527) is the same as the Mail 

address provided in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Alan Strom, Aerospace Engineer, Engine 

Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park; Burlington, MA 01803; 

e-mail: alan.strom@faa.gov; phone: 

(781) 238–7143; fax: (781) 238–7199. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Airworthiness Directive 2010–0262, 

dated December 13, 2010 (referred to 

after this as ‘‘the MCAI’’), to correct an 

unsafe condition for the specified 

products. The MCAI states: 

An uncontained engine failure has recently 

occurred on a Rolls-Royce RB211 Trent 900 

involving release of high energy debris and 

resulting in damage to the aeroplane. 

Analysis of the available elements from the 

incident investigation shows that an oil fire 

in the High Pressure/Intermediate Pressure 

(HP/IP) structure cavity may have initiated a 

sequence of events leading to rupture of the 

drive arm of the IP Turbine (IPT) disc and 

subsequent overspeed and burst of that same 

disc. 

Rolls-Royce has developed a modification 

of the Engine Electronic Controller (EEC) 

software, featuring an IPT Overspeed 

Protection System (IPTOS). The purpose of 

the IPTOS functionality is to detect engine 

conditions that may potentially lead to an IP 

turbine overspeed, and shut down the engine 

before the level of overspeed reaches the disc 

burst speed. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Rolls-Royce plc has issued Trent 900 

Series Propulsion Systems Alert Service 

Bulletin No. RB.211–73–AG639, dated 

December 3, 2010. The actions 

described in this service information are 

intended to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of This 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 United 

Kingdom, EASA has notified us of the 

unsafe condition described in the MCAI 

and service information referenced 

above. We are issuing this AD because 

we evaluated all information provided 

by the EASA, and determined the 

unsafe condition exists and is likely to 

exist or develop on other products of the 

same type design. 

FAA’s Determination of the Effective 

Date 

Since no domestic operators use this 

product, notice and opportunity for 

public comment before issuing this AD 

are unnecessary. Therefore, we are 

adopting this regulation immediately. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety, and 

we did not precede it by notice and 

opportunity for public comment. We 

invite you to send any written relevant 

data, views, or arguments about this AD. 

Send your comments to an address 

listed under the ADDRESSES section. 

Include ‘‘Docket No. FAA–2011–0176; 

Directorate Identifier 2011–NE–05–AD’’ 

at the beginning of your comments. We 

specifically invite comments on the 

overall regulatory, economic, 

environmental, and energy aspects of 

this AD. We will consider all comments 

received by the closing date and may 

amend this AD because of 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 AD. Using the 

search function of the Web site, anyone 

can find and read the comments in any 

of our dockets, including, if provided, 

the name of the individual who sent the 

comment (or signed the comment on 

behalf of an association, business, labor 

union, etc.). You may review the DOT’s 

complete Privacy Act Statement in the 

Federal Register published on April 11, 

2000 (65 FR 19477–78). 

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 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); and 

3. 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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, 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. 

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Federal Register / Vol. 76, No. 53 / Friday, March 18, 2011 / Rules and Regulations 14799 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new AD: 

2011–06–11 Rolls-Royce plc (RR): 

Amendment 39–16636; Docket No. 

FAA–2011–0176; Directorate Identifier 

2011–NE–05–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective April 4, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to RR model RB211– 

Trent 970–84, 970B–84, 972–84, 972B–84, 

977–84, 977B–84, and 980–84 turbofan 

engines. These engines are installed on, but 

not limited to, Airbus A380 series airplanes. 

Reason 

(d) An uncontained engine failure has 

recently occurred on a Rolls-Royce RB211 

Trent 900 involving release of high energy 

debris and resulting in damage to the 

aeroplane. Analysis of the available elements 

from the incident investigation shows that an 

oil fire in the High Pressure/Intermediate 

Pressure (HP/IP) structure cavity may have 

initiated a sequence of events leading to 

rupture of the drive arm of the IP Turbine 

(IPT) disc and subsequent overspeed and 

burst of that same disc. 

Rolls-Royce has developed a modification 

of the Engine Electronic Controller (EEC) 

software, featuring an IPT Overspeed 

Protection System (IPTOS). The purpose of 

the IPTOS functionality is to detect engine 

conditions that may potentially lead to an IP 

turbine overspeed, and shut down the engine 

before the level of overspeed reaches the disc 

burst speed. 

We are issuing this AD to prevent overspeed 

of the intermediate pressure turbine, which 

could result in loss of disc integrity, an 

uncontained failure of the engine, and 

damage to the airplane. 

Actions and Compliance 

(e) Unless already done, do the following 

actions: 

(1) Within 10 flight cycles after the 

effective date of this AD, incorporate 

software 10.6 to the EEC. 

(2) Guidance on incorporating software 

10.6 can be found in Rolls-Royce plc Trent 

900 Series Propulsion Systems Alert Service 

Bulletin (SB) No. RB.211–73–AG639, dated 

December 3, 2010. 

Prior Software Version Prohibition 

(3) After incorporation of software 10.6, do 

not incorporate any software version prior to 

10.6 to the EEC. 

FAA AD Differences 

(f) This AD differs from the Mandatory 

Continuing Airworthiness Information 

(MCAI) as follows: 

(1) MCAI European Aviation Safety Agency 

(EASA) AD 2010–0262, dated December 13, 

2010, requires that after EEC modification of 

an installed engine as required by that AD, 

do not intermix with any EEC software 

standards prior to modification 73–F328 

(standard 9.2.1) on that airplane. This AD 

does not, because there are no U.S. registered 

airplanes with RB211–Trent 900 engines. 

(2) MCAI EASA AD 2010–0262, dated 

December 13, 2010, states that from the 

effective date of the AD, no engine may be 

installed in an airplane unless the engine has 

incorporated the new software. This AD does 

not, because there are no U.S. registered 

airplanes with RB211–Trent 900 engines. 

(3) MCAI EASA AD 2010–0262, dated 

December 13, 2010, allows incorporation of 

later approved versions of EEC software 

standards that will include IPTOS 

functionality. This AD does not. Instead, we 

prohibit software installation prior to version 

10.6. 

Alternative Methods of Compliance 

(AMOCs) 

(g) The Manager, Engine Certification 

Office, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

Related Information 

(h) Refer to MCAI EASA AD 2010–0262, 

dated December 13, 2010, and Rolls-Royce 

plc Trent 900 Series Propulsion Systems 

Alert SB No. RB.211–73–AG639, dated 

December 3, 2010, for related information. 

(i) Contact Rolls-Royce plc, P.O. Box 31, 

Derby, DE24 8BJ, United Kingdom; phone: 44 

1332 242424; fax: 44 1332 249936, for a copy 

of the service information referenced in this 

AD. 

(j) Contact Alan Strom, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: alan.strom@faa.gov; phone: 

(781) 238–7143; fax: (781) 238–7199, for 

more information about this AD. 

Material Incorporated by Reference 

(k) None. 

Issued in Burlington, Massachusetts, on 

March 11, 2011. 

Peter A. White, 

Acting Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–6154 Filed 3–17–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2010–0938; Airspace 

Docket No. 10–ANE–108] 

Amendment of Class E Airspace; 

Newport, VT 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action amends Class E 

airspace at Newport, Vermont. The 

Newport Non-Directional Beacon (NDB) 

has been decommissioned and new 

Standard Instrument Approach 

Procedures (SIAPs) have been 

developed for Newport State Airport. 

This action enhances the safety and 

airspace management of Instrument 

Flight Rules (IFR) operations at the 

airport. 

DATES: Effective date: 0901 UTC, June 

30, 2011. The Director of the Federal 

Register approves this incorporation by 

reference action under title 1, Code of 

Federal Regulations, part 51, subject to 

the annual revision of FAA Order 

7400.9 and publication of conforming 

amendments. 

FOR FURTHER INFORMATION CONTACT: 

Richard Horrocks, Operations Support 

Group, Eastern Service Center, Federal 

Aviation Administration, P.O. Box 

20636, Atlanta, Georgia 30320; 

telephone (404) 305–5588. 

SUPPLEMENTARY INFORMATION: 

History 

On November 29, 2010, the FAA 

published in the Federal Register a 

notice of proposed rulemaking to amend 

Class E airspace 700 feet above the 

surface, at Newport, VT (75 FR 73015) 

Docket No. FAA–2010–0938. Interested 

parties were invited to participate in 

this rulemaking effort by submitting 

written comments on the proposal to the 

FAA. No comments were received. Class 

E airspace designations are published in 

paragraph 6005 of FAA Order 7400.9U 

dated August 18, 2010, and effective 

September 15, 2010, which is 

incorporated by reference in 14 CFR 

71.1. The Class E airspace designations 

listed in this document will be 

published subsequently in the Order. 

The Rule 

This amendment to Title 14, Code of 

Federal Regulations (14 CFR) part 71 

amends Class E airspace extending 

upward from 700 feet above the surface 

to support new SIAPs developed at 

Newport State Airport, Newport, 

Vermont. Airspace reconfiguration is 

necessary due to the decommissioning 

of the Newport NDB and cancellation of 

the NDB approach. Controlled airspace 

is necessary for the safety and 

management of IFR operations at the 

airport. 

The FAA has determined that this 

regulation only involves an established 

body of technical regulations for which 

frequent and routine amendments are 

necessary to keep them operationally 

current, is non-controversial and 

unlikely to result in adverse or negative 

comments. It, therefore, (1) Is not a 

‘‘significant regulatory action’’ under 

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