31324 Federal Register / Vol. 75, No. 106 / Thursday, June 3, 2010 / Proposed Rules 

In addition to requiring DOE to 

establish new energy conservation 

standards or energy use standards for 

furnace fans, EPCA generally directs 

DOE to establish test procedures for new 

covered products, such as furnace fans. 

(42 U.S.C. 6295(r)) Furthermore, section 

310(3) of the Energy Independence and 

Security Act of 2007 (EISA 2007) 

amended EPCA to require that any new 

or amended energy conservation 

standard adopted after July 1, 2010, 

shall address standby mode and off 

mode energy use pursuant to 42 U.S.C. 

6295(o). (42 U.S.C. 6295(gg)(3)) 

Pursuant to these mandates, DOE is also 

initiating a furnace fan test procedure 

rulemaking at this time. Accordingly, 

DOE is including in this framework 

document its preliminary review of any 

industry test procedures or testing 

methods used to characterize the 

performance of furnace fans in all 

modes of operation. DOE has also 

outlined a number of issues for 

comment regarding the testing of 

furnace fans, and it will consider the 

feedback received in response to this 

framework document in its 

development of a proposed test 

procedure for furnace fans. DOE intends 

to issue a separate notice of proposed 

rulemaking (NOPR) addressing the test 

procedures for furnace fans. When the 

furnace fan test procedure final rule is 

published, DOE will have complied 

with EPCA’s statutory requirements for 

test procedures. 

To initiate the furnace fan 

rulemaking, DOE has prepared a 

framework document to explain the 

issues, analyses, and processes it 

anticipates using in considering the 

development of new energy 

conservation standards or energy use 

standards for furnace fans. Also 

included in this framework document is 

a detailed summary of a preliminary test 

procedure that DOE is considering for 

use in developing its own test procedure 

and for use in the development of 

energy conservation standards for 

furnace fans. 

The main focus of the public meeting 

noted above will be to discuss the 

analyses presented and issues identified 

in the framework document. At the 

public meeting, DOE will make a 

number of presentations, invite 

discussion on the rulemaking process as 

it applies to certain furnace fans, and 

solicit comments, data, and information 

from participants and other interested 

parties. DOE will also invite comment 

on its preliminary determination of the 

scope of coverage for the furnace fan 

energy conservation standard and its 

preliminary analysis of the development 

of a test procedure for furnace fans. 

DOE encourages those who wish to 

participate in the public meeting to 

obtain the framework document and to 

be prepared to discuss its contents. A 

copy of the framework document is 

available at: www.eere.energy.gov/ 

buildings/appliance_standards/ 

residential/furnace_fans.html. 

Public meeting participants need not 

limit their comments to the issues 

identified in the framework document. 

DOE is also interested in comments on 

other relevant issues that participants 

believe would affect energy 

conservation standards or energy use 

standards for this product, applicable 

test procedures, or the preliminary 

determination on the scope of coverage. 

DOE invites all interested parties, 

whether or not they participate in the 

public meeting, to submit in writing by 

July 6, 2010 comments and information 

on matters addressed in the framework 

document and on other matters relevant 

to DOE’s consideration of new standards 

for furnace fans. 

The public meeting will be conducted 

in an informal, facilitated, conference 

style. There shall be no discussion of 

proprietary information, costs or prices, 

market shares, or other commercial 

matters regulated by U.S. antitrust laws. 

A court reporter will record the 

proceedings of the public meeting, after 

which a transcript will be available for 

purchase from the court reporter and 

placed on the DOE Web site at: 

www.eere.energy.gov/buildings/ 

appliance_standards/residential/ 

furnace_fans.html. 

After the public meeting and the close 

of the comment period, DOE will begin 

collecting data, conducting the analyses 

as discussed in the framework 

document and at the public meeting, 

and reviewing the public comments. 

These actions will be taken to develop 

an energy conservation standards NOPR 

and separate test procedure NOPR for 

furnace fans. 

DOE considers public participation to 

be a very important part of the process 

for setting energy conservation 

standards. DOE actively encourages the 

participation and interaction of the 

public during the comment period in 

each stage of the rulemaking process. 

Beginning with the framework 

document, and during each subsequent 

public meeting and comment period, 

interactions with and between members 

of the public provide a balanced 

discussion of the issues and assist DOE 

in the standards rulemaking process. 

Anyone who wishes to participate in the 

public meeting, receive meeting 

materials, or be added to the DOE 

mailing list to receive future notices and 

information about this rulemaking 

should contact Ms. Brenda Edwards at 

(202) 586–2945, or via e-mail at 

Brenda.Edwards@ee.doe.gov. 

Issued in Washington, DC, on May 27, 

2010. 

Cathy Zoi, 

Assistant Secretary, Energy Efficiency and 

Renewable Energy. 

[FR Doc. 2010–13387 Filed 6–2–10; 8:45 am] 

BILLING CODE 6450–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0482; Directorate 

Identifier 2009–NM–225–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2B19 (Regional Jet 

Series 100 & 440) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

AD results from mandatory continuing 

airworthiness information (MCAI) 

originated 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: There have been several 

Stick Pusher Capstan Shaft failures 

causing severe degradation of the stick 

pusher function. This directive is issued 

to revise the first flight of the day check 

of the stall protection system to detect 

degradation of the stick pusher function. 

It also introduces a new repetitive 

maintenance task to limit exposure to 

dormant failure of the stick pusher 

capstan shaft. Dormant loss or severe 

degradation of the stick pusher function 

could result in reduced controllability 

of the airplane. The proposed AD would 

require actions that are intended to 

address the unsafe condition described 

in the MCAI. 

DATES: We must receive comments on 

this proposed AD by July 19, 2010. 

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. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 


srobinson on DSKHWCL6B1PROD with PROPOSALS
Federal Register / Vol. 75, No. 106 / Thursday, June 3, 2010 / Proposed Rules 31325 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–40, 1200 New Jersey Avenue SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Bombardier, 

Inc., 400 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; telephone 

514–855–5000; fax 514–855–7401; email thd.crj@aero.bombardier.com; 

Internet http://www.bombardier.com. 

You may review copies of the 

referenced service information at the 

FAA, Transport Airplane Directorate, 

1601 Lind Avenue, SW., Renton, 

Washington. For information on the 

availability of this material at the FAA, 

call 425–227–1221 or 425–227–1152. 

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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Bruce Valentine, Avionics and Flight 

Test Branch, ANE–172, FAA, New York 

Aircraft Certification Office (ACO), 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7328; fax (516) 794–5531. 

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–2010–0482; Directorate Identifier 

2009–NM–225–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 have lengthened the 30-day 

comment period for proposed ADs that 

address MCAI originated by aviation 

authorities of other countries to provide 

adequate time for interested parties to 

submit comments. The comment period 

for these proposed ADs is now typically 

45 days, which is consistent with the 

comment period for domestic transport 

ADs. 

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 proposed AD. 

Discussion 

Transport Canada Civil Aviation, 

which is the aviation authority for 

Canada, has issued Canadian 

Airworthiness Directive CF–2009–36, 

dated September 2, 2009 (referred to 

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

unsafe condition for the specified 

products. The MCAI states: 

There have been several Stick Pusher 

Capstan Shaft failures causing severe 

degradation of the stick pusher function. This 

directive is issued to revise the first flight of 

the day check of the stall protection system 

to detect degradation of the stick pusher 

function. It also introduces a new repetitive 

maintenance task to limit exposure to 

dormant failure of the stick pusher capstan 

shaft. 

Dormant loss or severe degradation of 

the stick pusher function could result in 

reduced controllability of the airplane. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Bombardier has issued Temporary 

Revision (TR) 2A–43, dated May 7, 

2008, to Appendix A—Certification 

Maintenance Requirements of Part 2 of 

the Bombardier CL–600–2B19 

Maintenance Requirements Manual; and 

Canadair Regional Jet TR RJ/178–1, 

dated March 8, 2010, to Canadair 

Regional Jet Airplane Flight Manual 

CSP A–012. 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 Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a Note within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 601 products of U.S. 

registry. We also estimate that it would 

take about 1 work-hour per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Based on 

these figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$51,085, or $85 per product. 

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. 


srobinson on DSKHWCL6B1PROD with PROPOSALS
31326 Federal Register / Vol. 75, No. 106 / Thursday, June 3, 2010 / Proposed Rules 

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); 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 proposed 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. 

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 AD: 

Bombardier, Inc.: Docket No. FAA–2010– 

0482; Directorate Identifier 2009–NM– 

225–AD. 

Comments Due Date 

(a) We must receive comments by July 19, 

2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

Model CL–600–2B19 (Regional Jet Series 100 

& 440) airplanes, certificated in any category, 

serial numbers 7003 through 7990 inclusive, 

and 8000 and subsequent. 

Note 1: This AD requires revisions to 

certain operator maintenance documents to 

include new inspections. Compliance with 

these inspections is required by 14 CFR 

91.403(c). For airplanes that have been 

previously modified, altered, or repaired in 

the areas addressed by these inspections, the 

operator may not be able to accomplish the 

inspections described in the revisions. In this 

situation, to comply with 14 CFR 91.403(c), 

the operator must request approval for an 

alternative method of compliance according 

to paragraph (h)(1) of this AD. The request 

should include a description of changes to 

the required inspections that will ensure the 

continued operational safety of the airplane. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 27: Flight controls. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

There have been several Stick Pusher 

Capstan Shaft failures causing severe 

degradation of the stick pusher function. This 

directive is issued to revise the first flight of 

the day check of the stall protection system 

to detect degradation of the stick pusher 

function. It also introduces a new repetitive 

maintenance task to limit exposure to 

dormant failure of the stick pusher capstan 

shaft. 

Dormant loss or severe degradation of the 

stick pusher function could result in reduced 

controllability of the airplane. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Actions 

(g) Do the following actions. 

(1) Within 30 days after the effective date 

of this AD, revise the Limitations section of 

Canadair Regional Jet Airplane Flight Manual 

(AFM) CSP A–012 to include the information 

in Canadair Regional Jet Temporary Revision 

(TR) RJ/178–1, dated March 8, 2010; as 

specified in the TR. The Canadair Regional 

Jet TR RJ/178–1, dated March 8, 2010, 

introduces procedures for performing a stall 

protection system test. Operate the airplane 

according to the limitations and procedures 

in the Canadair Regional Jet TR RJ/178–1, 

dated March 8, 2010. 

Note 2: This may be done by inserting a 

copy of Canadair Regional Jet TR RJ/178–1, 

dated March 8, 2010, into the Canadair 

Regional Jet AFM CSP A–012. When this 

Canadair Regional Jet TR has been included 

in general revisions of the Canadair Regional 

Jet AFM, the general revisions may be 

inserted in the AFM, provided the relevant 

information in the general revision is 

identical to that in the Canadair Regional Jet 

TR. 

(2) Within 30 days after the effective date 

of this AD, revise Appendix A—Certification 

Maintenance Requirements of Part 2 of the 

Bombardier CL–600–2B19 Maintenance 

Requirements Manual (MRM) by 

incorporating the information in Bombardier 

TR 2A–43, dated May 7, 2008; as specified 

in the TR. The initial compliance time for the 

new MRM task identified in the TR is at the 

later of the times specified in paragraphs 

(g)(2)(i) and (g)(2)(ii) of this AD. Thereafter, 

except as provided by paragraph (h)(1) of this 

AD, no alternative task intervals may be 

used. The TR to the MRM introduces 

procedures for a function check of the stick 

pusher capstan. 

(i) Prior to the accumulation of 5,000 total 

flight hours. 

(ii) Within 500 flight hours after the 

effective date of this AD. 

Note 3: The actions required by paragraph 

(g)(2) of this AD may be done by inserting a 

copy of Bombardier TR 2A–43, dated May 7, 

2008, to Appendix A—Certification 

Maintenance Requirements of Part 2 of the 

Bombardier CL–600–2B19 MRM. When this 

Bombardier TR has been included in general 

revisions of the Bombardier MRM, the 

Bombardier TR may be removed from the 

MRM, provided the relevant information in 

the general revision is identical to that in 

Bombardier TR 2A–43, dated May 7, 2008. 

FAA AD Differences 

Note 4: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(h) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office, ANE–170, 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: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York, 

11590; telephone 516–228–7300; fax 516– 

794–5531. Before using any approved AMOC 

on any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. The AMOC approval letter must 

specifically reference this AD. 

(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. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

(4) Special Flight Permits: We are not 

allowing special flight permits, as described 

in Section 21.197 and Section 21.199 of the 

Federal Aviation Regulations (14 CFR 21.197 

and 21.199). 

Related Information 

(i) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–36, dated September 2, 

2009; and Bombardier TR 2A–43, dated May 

7, 2008, to Appendix A—Certification 

Maintenance Requirements of Part 2 of the 

Bombardier CL–600–2B19 Maintenance 

Requirements Manual, dated May 7, 2008; 

and Canadair Regional Jet TR RJ/178–1, dated 

March 8, 2010, to Canadair Regional Jet 

Airplane Flight Manual CSP A–012; for 

related information. 


srobinson on DSKHWCL6B1PROD with PROPOSALS
Federal Register / Vol. 75, No. 106 / Thursday, June 3, 2010 / Proposed Rules 31327 

Issued in Renton, Washington, on May 25, 

2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–13305 Filed 6–2–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0547; Directorate 

Identifier 2009–NM–234–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 757 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for all 

Model 757 airplanes. This proposed AD 

would require a detailed inspection of 

the inboard and outboard main track 

downstop assemblies and a torque 

application to the main track downstop 

assembly nuts of slat numbers 1 through 

10, excluding the outboard track of slats 

1 and 10, a detailed inspection of all slat 

track housings, and related corrective 

actions if necessary. This proposed AD 

results from reports of fuel leaking from 

the front spar of the wing through the 

slat track housing. We are proposing 

this AD to detect and correct incorrectly 

installed main track downstop 

assemblies, which, when the slat is 

retracted, could cause a puncture in the 

slat track housing leading to a fuel leak 

and potential fire. 

DATES: We must receive comments on 

this proposed AD by July 19, 2010. 

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. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For service information identified in 

this proposed AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; e-mail 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. You 

may review copies of the referenced 

service information at the FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington. 

For information on the availability of 

this material at the FAA, call 425–227– 

1221. 

Examining the AD Docket 

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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(telephone 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Chris Hartman, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, 

Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6432; fax (425) 917–6590. 

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–2010–0547; Directorate Identifier 

2009–NM–234–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 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 we receive 

about this proposed AD. 

Discussion 

We have received two reports of fuel 

leaking from the front spar of the wing 

through the slat track housing. In at 

least one case, the source of the fuel leak 

was from a puncture of the slat track 

housing caused by a roller that had 

fallen into the slat track housing. The 

roller, which was not a component of 

the slat installation or the slat track 

support rib, subsequently punctured the 

slat track housing when the slat was 

retracted. While fuel leaking from a 

punctured slat track housing could lead 

to a fire, in both cases, no fires were 

reported. 

Relevant Service Information 

We have reviewed Boeing Special 

Attention Bulletin 757–57–0068, dated 

September 15, 2009. That service 

bulletin describes procedures for doing 

a detailed inspection of the inboard and 

outboard main track downstop 

assemblies and for applying torque to 

the main track downstop assembly nuts 

of slat numbers 1 through 10, excluding 

the outboard track of slats 1 and 10. 

That service bulletin also describes 

procedures for doing a detailed 

inspection of both inboard and outboard 

slat track housings of slat numbers 1 

through 10 for foreign object debris or 

visible damage, and doing corrective 

actions if necessary. Boeing Special 

Attention Bulletin 757–57–0068, dated 

September 15, 2009, specifies the 

following corrective actions: 

• Removing and reinstalling 

incorrectly installed main track 

downstop assemblies. 

• Replacing damaged or missing main 

track downstop assembly parts. 

• Removing foreign object debris. 

• Repairing or replacing damaged slat 

track housings. 

• Contacting Boeing for repair 

instructions. 

Boeing Special Attention Bulletin 

757–57–0068, dated September 15, 

2009, specifies that the detailed 

inspections of the main track downstop 

assembles and the slat track housings be 

done before 24 months after the date on 

that service bulletin. That service 

bulletin also specifies that application 

of torque to the main track downstop 

assembly nuts be done before 24 months 

after the date on that service bulletin. 

That service bulletin also specifies that 

corrective actions be done before further 

flight. 

FAA’s Determination and Requirements 

of This Proposed AD 

We are proposing this AD because we 

evaluated all relevant information and 

determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. This proposed AD would 

require accomplishing the actions 

specified in the service information 

described previously, except as 

discussed under ‘‘Differences Between 


srobinson on DSKHWCL6B1PROD with PROPOSALS