Federal Register / Vol. 76, No. 122 / Friday, June 24, 2011 / Rules and Regulations 36981 

SUMMARY: The FAA is correcting an 

airworthiness directive (AD) that 

published in the Federal Register. That 

AD applies to the products listed above. 

The AD number in the preamble on the 

first page of the AD is incorrect. This 

document corrects that error. In all other 

respects, the original document remains 

the same. 

DATES: This final rule is effective June 

24, 2011. The effective date for AD 

2011–09–51 remains May 31, 2011. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov; 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 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: 

Mike Kiesov, Aerospace Engineer, Small 

Airplane Directorate, FAA, 901 Locust, 

Kansas City, MO 64106; phone: (816) 

329–4144; fax: (816) 329–4090; e-mail: 

mike.kiesov@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Airworthiness Directive 2011–09–51, 

Amendment 39–16697 (76 FR 27872, 

May 13, 2011), currently requires an 

inspection and functional test of the 

valves and drain holes in the fuselage 

and requires sending a report of the 

results to Piaggio. If the valves and drain 

holes are found to not drain properly 

and where no additional drain holes 

have been drilled, then there is a 

requirement to drill additional drain 

holes. 

As published, the AD number 

specified in the preamble section of the 

first page is incorrect. 

No other part of the preamble or 

regulatory information has been 

changed; therefore, only the changed 

portion of the final rule is being 

published in the Federal Register. 

The effective date of AD 2011–09–51 

remains May 31, 2011. 

Correction of Non-Regulatory Text 

In the Federal Register of May 13, 

2011, AD 2011–09–51, Amendment 39– 

16697, on page 27872, in the 3rd 

column, on line 3 of the agency 

identification number section of the 

preamble of AD 2011–09–51, the AD 

number is incorrectly referenced as AD 

2011–10–16. This correction changes 

that AD number to AD 2011–09–51. 

Issued in Kansas City, Missouri, on June 

20, 2011. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2011–15810 Filed 6–23–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0445; Directorate 

Identifier 2011–NE–14–AD; Amendment 39– 

16727; AD 2011–13–04] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc RB211—Trent 500 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: 

A Trent 500 engine has been found with 

thermal distress of the Intermediate Pressure 

(IP) Turbine Nozzle Guide Vanes. The 

resultant investigation found the root cause 

to be carbon blockage of the fuel spray 

nozzles. The source of the carbon has been 

identified to be the RH fuel manifold 

assembly. Analysis has verified that low fuel 

velocity and thermal input may cause 

formation of carbon in a specific region of the 

RH fuel manifold. As advanced thermal 

distress of IP Turbine components may 

potentially result in uncontained, high 

energy debris release, the formation of carbon 

in the RH fuel manifold constitutes a 

potentially unsafe condition. To address and 

correct this unsafe condition, Rolls Royce 

have developed a cleaning or replacement 

programme of the RH fuel manifold and an 

optional part replacement. 

We are issuing this AD to prevent the 

release of uncontained high-energy 

debris in the event of IP turbine 

component failure, which could result 

in damage to the airplane. 

DATES: This AD becomes effective July 

11, 2011. 

We must receive comments on this 

AD by July 25, 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 

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 (telephone 

(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 & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

telephone 781–238–7143; fax 781–238– 

7199; e-mail: alan.strom@faa.gov. 

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 2011–0050, 

dated March 21, 2011 (referred to after 

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

condition for the specified products. 

The MCAI states: 

A Trent 500 engine has been found with 

thermal distress of the Intermediate Pressure 

(IP) Turbine Nozzle Guide Vanes. The 

resultant investigation found the root cause 

to be carbon blockage of the fuel spray 

nozzles. The source of the carbon has been 

identified to be the RH fuel manifold 

assembly. Analysis has verified that low fuel 

velocity and thermal input may cause 

formation of carbon in a specific region of the 

RH fuel manifold. As advanced thermal 

distress of IP Turbine components may 

potentially result in uncontained, high 

energy debris release, the formation of carbon 

in the RH fuel manifold constitutes a 

potentially unsafe condition. To address and 

correct this unsafe condition, Rolls Royce 

have developed a cleaning or replacement 

programme of the RH fuel manifold and an 

optional part replacement. 


jlentini on DSK4TPTVN1PROD with RULES
36982 Federal Register / Vol. 76, No. 122 / Friday, June 24, 2011 / Rules and Regulations 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Rolls-Royce plc has issued Alert 

Service Bulletin No. RB.211–73–AG422, 

Revision 2, dated January 14, 2011. 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, they have 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 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–2011–0445; 

Directorate Identifier 2011–NE–14–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, 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 AD: 

2011–13–04 Rolls-Royce plc: Amendment 

39–16727; Docket No. FAA–2011–0445; 

Directorate Identifier 2011–NE–14–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective July 11, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Rolls-Royce plc 

RB211–Trent 553–61, RB211–Trent 553A2– 

61, RB211–Trent 556–61, RB211–Trent 

556A2–61, RB211–Trent 556B–61, RB211– 

Trent 556B2–61, RB211–Trent 560–61, and 

RB211–Trent 560A2–61 turbofan engines, 

with right-hand (RH) fuel manifold assembly, 

part number FW18706, installed. 

Reason 

(d) 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: 

A Trent 500 engine has been found with 

thermal distress of the Intermediate Pressure 

(IP) Turbine Nozzle Guide Vanes. The 

resultant investigation found the root cause 

to be carbon blockage of the fuel spray 

nozzles. The source of the carbon has been 

identified to be the RH fuel manifold 

assembly. Analysis has verified that low fuel 

velocity and thermal input may cause 

formation of carbon in a specific region of the 

RH fuel manifold. 

As advanced thermal distress of IP Turbine 

components may potentially result in 

uncontained, high energy debris release, the 

formation of carbon in the RH fuel manifold 

constitutes a potentially unsafe condition. To 

address and correct this unsafe condition, 

Rolls Royce have developed a cleaning or 

replacement programme of the RH fuel 

manifold and an optional part replacement. 

We are issuing this AD to prevent the 

release of uncontained high-energy debris in 

the event of IP turbine component failure, 

which could result in damage to the airplane. 

Actions and Compliance 

(e) Unless already done, do the following 

actions: 

Initial Cleaning and Inspection, or 

Replacement 

(1) For engines that on the effective date of 

this AD, have not been repaired using Engine 

Management Program, Issue 7, dated May 7, 

2010 or later version; and 


jlentini on DSK4TPTVN1PROD with RULES
Federal Register / Vol. 76, No. 122 / Friday, June 24, 2011 / Rules and Regulations 36983 

(2) That have not incorporated Rolls-Royce 

Repeater Technical Variance TV97291, dated 

July 2009, or later version; and 

(3) That have not had the RH fuel manifold 

assembly cleaned using Overhaul Process 

Manual TSD594–J, Task 70–00–00–100–121, 

as instructed in Component Maintenance 

Manual, Tubes, Hoses, and Ducts, dated 

October 2009, or later version; and 

(4) That have not had the RH manifold 

assembly replaced with a new RH manifold 

assembly; and 

(5) That have not incorporated Rolls-Royce 

plc Alert Service Bulletin No. RB.211–73– 

AG327, Revision 1, dated May 4, 2010, or 

later version, then: 

(i) Initially clean and inspect the RH fuel 

manifold assembly or replace the RH fuel 

manifold assembly with a serviceable RH fuel 

manifold assembly. 

(ii) Guidance on cleaning, inspecting, or 

replacing of the RH manifold assembly, can 

be found in Rolls-Royce plc Alert Service 

Bulletin No. RB.211–73–AG422, Revision 2, 

dated January 14, 2011. 

(iii) Perform the cleaning, inspection, or 

replacement at the following times: 

(A) For engines with 3,200 cycles-sincenew (CSN) or more, clean and inspect within 

200 cycles after the effective date of this AD. 

(B) For engines with between 3,000 CSN 

and 3,199 CSN, clean and inspect no later 

than 3,400 CSN. 

(C) For engines with between 2,600 CSN 

and 2,999 CSN, clean and inspect within 400 

cycles after the effective date of this AD. 

(D) For engines with between 2,400 CSN 

and 2,599 CSN, clean and inspect no later 

than 3,000 CSN. 

(E) For engines with between 1,300 CSN 

and 2,399 CSN, clean and inspect within 600 

cycles after the effective date of this AD. 

(F) For engines with fewer than 1,300 CSN, 

clean and inspect no later than 1,900 CSN. 

(6) For engines that on the effective date of 

this AD, have been repaired using Engine 

Management Program, Issue 7, dated May 7, 

2010 or later version; or 

(7) That have incorporated Rolls-Royce 

Repeater Technical Variance TV97291, dated 

July 2009, or later version; or 

(8) That have had the RH fuel manifold 

assembly cleaned using Overhaul Process 

Manual TSD594–J, Task 70–00–00–100–121, 

as instructed in Component Maintenance 

Manual, Tubes, Hoses, and Ducts, dated 

October 2009, or later version; or 

(9) That have had the RH manifold 

assembly replaced with a new RH manifold 

assembly; or 

(10) That have incorporated Rolls-Royce 

plc Alert Service Bulletin No. RB.211–73– 

AG327, Revision 1, dated May 4, 2010, or 

later version, then: 

(i) Initially clean and inspect the RH fuel 

manifold assembly or replace the RH fuel 

manifold assembly with a serviceable RH fuel 

manifold assembly, within 1,300 cycles since 

the engine most recently met any of the 

requirements of paragraphs (e)(6) through 

(e)(10) of this AD. 

(ii) Guidance on cleaning, inspecting, or 

replacing of the RH manifold assembly, can 

be found in Rolls-Royce plc Alert Service 

Bulletin No. RB.211–73–AG422, Revision 2, 

dated January 14, 2011. 

Repetitive Cleaning and Inspection, or 

Replacement 

(11) Thereafter, repetitively clean and 

inspect the RH fuel manifold assembly or 

replace the RH fuel manifold assembly with 

a serviceable RH fuel manifold assembly, 

within 1,300 cycles since performing the last 

cleaning and inspection or replacement. 

Optional Terminating Action 

(12) As optional terminating action to the 

repetitive actions in this AD, remove RH fuel 

manifold assembly, part number FW18706, 

and install a redesigned RH fuel manifold 

assembly. Guidance on installing the 

redesigned RH fuel manifold assembly can be 

found in Rolls-Royce plc Service Bulletin No. 

RB.211–73–G547, dated December 7, 2010. 

FAA AD Differences 

(f) None. 

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 European Aviation 

Safety Agency Airworthiness Directive 2011– 

0050, dated March 21, 2011, Rolls-Royce plc 

Alert Service Bulletin No. RB.211–73– 

AG422, Revision 2, dated January 14, 2011, 

and Rolls-Royce plc Service Bulletin No. 

RB.211–73–G547, dated December 7, 2010, 

for related information. Contact Rolls-Royce 

plc, Corporate Communications, P.O. Box 31, 

Derby, England, DE248BJ, telephone: 011– 

44–1332–242424; fax: 011–44–1332–245418; 

or e-mail via: http://www.rolls-royce.com/

contact/civil_team.jsp, for a copy of this 

service information. 

(i) Contact Alan Strom, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; telephone 781–238–7143; fax 781– 

238–7199; e-mail: alan.strom@faa.gov, for 

more information about this AD. 

Material Incorporated by Reference 

(j) None. 

Issued in Burlington, Massachusetts, on 

June 14, 2011. 

Peter A. White, 

Acting Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–15677 Filed 6–23–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 77 

[Docket No: FAA 2010–1326] 

Marking Meteorological Evaluation 

Towers 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Policy statement. 

SUMMARY: This action announces the 

FAA’s recommended guidance for the 

voluntary marking of Meteorological 

Evaluation Towers (METs) erected in 

remote and rural areas that are less than 

200 feet above ground level (AGL). This 

guidance will enhance the conspicuity 

of the towers for low level agricultural 

operations in the vicinity of these 

towers. 

FOR FURTHER INFORMATION CONTACT: 

Sheri Edgett Baron, Obstruction 

Evaluation Group, Air Traffic 

Organization, AJV–15, Federal Aviation 

Administration, 800 Independence 

Avenue, SW., Washington, DC 20591; 

telephone: (202) 267–8783; e-mail: 

sheri.edgett-baron@faa.gov. 

SUPPLEMENTARY INFORMATION: 

14 CFR Part 77 

Title 49 of the United States Code 

(U.S.C.), section 40103(a)(1), provides 

that the ‘‘United States Government has 

exclusive sovereignty of airspace of the 

United States.’’ Paragraph (b) of this 

section directs the FAA to ‘‘develop 

plans and policy for the use of the 

navigable airspace and assign by 

regulation or order the use of the 

airspace necessary to ensure the safety 

of aircraft and the efficient use of the 

airspace.’’ 

In recognition of the threat tall 

structures can pose to aviation safety, 49 

U.S.C. 44718 directed the FAA to 

promulgate regulations requiring notice 

of proposed structures or alterations of 

existing structures when the notice will 

promote safety in air commerce and the 

efficient use and preservation of the 

navigable airspace and of airport traffic 

capacity at public-use airports. See 14 

CFR part 77. The agency was further 

directed to study such structures and 

determine the extent of any adverse 

impacts on the safe and efficient use of 

the airspace, facilities or equipment. 

Consistent with the above statutory 

and regulatory framework, the FAA has 

adopted policy to establish the 

standards for which the FAA identifies 

‘‘obstructions’’ and ‘‘hazards’’ in the 

navigable airspace in furtherance of its 


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