This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

61539 

Vol. 77, No. 196 

Wednesday, October 10, 2012 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1067; Directorate 

Identifier 2011–NM–231–AD] 

RIN 2120–AA64 

Airworthiness Directives; DASSAULT 

AVIATION Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

DASSAULT AVIATION Model 

FALCON 2000, FALCON 2000EX, 

MYSTERE–FALCON 900 and FALCON 

900EX airplanes; and all Model 

MYSTERE–FALCON 50 airplanes. This 

proposed AD was prompted by reports 

that collapse of the main landing gear 

(MLG) could cause wing tank structure 

failure, which could result in fuel 

spillage and consequent fire hazard. 

This proposed AD would require 

modification of the wing fuel tanks in 

the area of the wheel well. We are 

proposing this AD to prevent fuel 

spillage in the event of a MLG collapse, 

and consequent fire hazard. 

DATES: We must receive comments on 

this proposed AD by November 26, 

2012. 

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, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Dassault 

Falcon Jet, P.O. Box 2000, South 

Hackensack, New Jersey 07606; 

telephone 201–440–6700; Internet 

http://www.dassaultfalcon.com. You 

may review copies of the 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. 

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: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue SW., Renton, WA 

98057–3356; telephone (425) 227–1137; 

fax (425) 227–1149. 

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–2012–1067; Directorate Identifier 

2011–NM–231–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 we receive 

about 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 

Airworthiness Directive 2011–0193, 

dated October 5, 2011 (referred to after 

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

condition for the specified products. 

The MCAI states: 

In service experience has shown that, in 

case of main landing gear collapse due to 

overloads during take off or landing (e.g., 

during high-speed runway excursions), the 

wing tank structure can fail, leading to fuel 

spillage. * * * 

This condition, if not corrected, could 

result, in case of main landing gear collapse, 

in a fuel spillage which may constitute a fire 

hazard. 

To address this unsafe condition, Dassault 

Aviation have developed a structural 

modification of the wing fuel tanks in the 

area of the wheel well which introduces a 

dry bay by adding a sealed boundary in front 

of the rear spar between ribs 4 and 5. 

For the reasons described above, this 

[EASA] AD requires accomplishment of the 

above-mentioned modification for the Right 

Hand (RH) and Left Hand (LH) wing fuel 

tanks. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Dassault Aviation has issued the 

following service information. The 

actions described in this service 

information are intended to correct the 

unsafe condition identified in the 

MCAI. 

• Dassault Mandatory Service 

Bulletin F50–496, Revision 2, dated 

March 10, 2010 (for Model MYSTERE– 

FALCON 50 airplanes), which includes 

the following appendices: 

• Appendix 1, Revision 2, dated 

February 15, 2010. 

• Appendix 2, Revision 3, dated 

February 15, 2009. 

• Appendix 3, Revision 2, dated 

October 21, 2009. 

• Appendix 4, Revision 1, dated 

October 20, 2009. 

• Appendix 5, Revision 3, dated 

March 10, 2010. 

• Dassault Mandatory Service 

Bulletin F900EX–329, Revision 3, dated 

March 10, 2010 (for Model FALCON 

900EX airplanes), which includes the 

following appendices: 

• Appendix 1, Revision 2, dated 

February 15, 2010. 


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61540 Federal Register / Vol. 77, No. 196 / Wednesday, October 10, 2012 / Proposed Rules 

• Appendix 2, Revision 3, dated 

February 15, 2009. 

• Appendix 3, Revision 2, dated 

October 21, 2009. 

• Appendix 4, Revision 1, dated 

October 20, 2009. 

• Appendix 5, Revision 3, dated 

March 10, 2010. 

• Dassault Mandatory Service 

Bulletin F900–388, Revision 2, dated 

March 10, 2010 (for Model MYSTERE– 

FALCON 900 airplanes), which includes 

the following appendices: 

• Appendix 1, Revision 2, dated 

February 15, 2010. 

• Appendix 2, Revision 3, dated 

February 15, 2009. 

• Appendix 3, Revision 2, dated 

October 21, 2009. 

• Appendix 4, Revision 1, dated 

October 20, 2009. 

• Appendix 5, Revision 3, dated 

March 10, 2010. 

• Dassault Mandatory Service 

Bulletin F2000–358, Revision 3, dated 

March 10, 2010 (for Model FALCON 

2000 airplanes), which includes the 

following appendices: 

• Appendix 1, Revision 2, dated 

February 15, 2010. 

• Appendix 2, Revision 3, dated 

February 15, 2009. 

• Appendix 3, Revision 2, dated 

October 21, 2009. 

• Appendix 4, Revision 1, dated 

October 20, 2009. 

• Appendix 5, Revision 3, dated 

March 10, 2010. 

• Dassault Mandatory Service 

Bulletin F2000EX–171, Revision 3, 

dated March 10, 2010 (for Model 

FALCON 2000EX airplanes), which 

includes the following appendices: 

• Appendix 1, Revision 2, dated 

February 15, 2010. 

• Appendix 2, Revision 3, dated 

February 15, 2009. 

• Appendix 3, Revision 2, dated 

October 21, 2009. 

• Appendix 4, Revision 1, dated 

October 20, 2009. 

• Appendix 5, Revision 3, dated 

March 10, 2010. 

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. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 753 products of U.S. 

registry. We also estimate that it would 

take about 640 work-hours per product 

to comply with the basic requirements 

of this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $18,500 per 

product. Where the service information 

lists required parts costs that are 

covered under warranty, we have 

assumed that there will be no charge for 

these parts. As we do not control 

warranty coverage for affected parties, 

some parties may incur costs higher 

than estimated here. Based on these 

figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$54,893,700, or $72,900 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. 

For the reasons discussed above, I 

certify that 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; 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. 

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: 

Dassault Aviation: Docket No. FAA–2012– 

1067; Directorate Identifier 2011–NM– 

231–AD. 

(a) Comments Due Date 

We must receive comments by November 

26, 2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to the airplanes specified 

in paragraphs (c)(1), (c)(2), and (c)(3) of this 

AD, certificated in any category. 

(1) Dassault Aviation Model FALCON 2000 

and FALCON 2000EX airplanes, all serial 

numbers, except those on which 

modification M3072 has been installed. 

(2) DASSAULT AVIATION Model 

MYSTERE–FALCON 50 airplanes, all serial 

numbers. 

(3) DASSAULT AVIATION Model 

MYSTERE–FALCON 900 and FALCON 

900EX airplanes, all serial numbers, except 

those on which modification M5413 has been 

installed. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57, Wings. 

(e) Reason 

This AD was prompted by reports that 

collapse of the main landing gear (MLG) 

could cause wing tank structure failure, 

which could result in fuel spillage and a 

consequent fire hazard. We are issuing this 

AD to prevent fuel spillage in the event of a 

MLG collapse, and consequent fire hazard. 

(f) Compliance 

You are responsible for having the actions 

required by this AD performed within the 

compliance times specified, unless the 

actions have already been done. 


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(g) Modification 

Within 150 months after the effective date 

of this AD, do the modification of the righthand and left-hand wing fuel tanks, in 

accordance with the Accomplishment 

Instructions of the applicable service 

information specified in paragraph (g)(1), 

(g)(2), (g)(3), (g)(4), or (g)(5) of this AD, as 

applicable. The service information specified 

in paragraphs (g)(1) through (g)(5) of this AD 

contain a paragraph which states that each 

person applying the service bulletins must 

have successfully completed a training 

program. This training is recommended but 

is not required by this AD. 

(1) For Model MYSTERE–FALCON 50 

airplanes: Dassault Mandatory Service 

Bulletin F50–496, Revision 2, dated March 

10, 2010, which includes the following 

appendices. 

(i) Appendix 1, Revision 2, dated February 

15, 2010. 

(ii) Appendix 2, Revision 3, dated February 

15, 2009. 

(iii) Appendix 3, Revision 2, dated October 

21, 2009. 

(iv) Appendix 4, Revision 1, dated October 

20, 2009. 

(v) Appendix 5, Revision 3, dated March 

10, 2010. 

(2) For Model FALCON 900EX airplanes: 

Dassault Mandatory Service Bulletin 

F900EX–329, Revision 3, dated March 10, 

2010, which includes the following 

appendices. 

(i) Appendix 1, Revision 2, dated February 

15, 2010. 

(ii) Appendix 2, Revision 3, dated February 

15, 2009. 

(iii) Appendix 3, Revision 2, dated October 

21, 2009. 

(iv) Appendix 4, Revision 1, dated October 

20, 2009. 

(v) Appendix 5, Revision 3, dated March 

10, 2010. 

(3) For Model MYSTERE–FALCON 900 

airplanes: Dassault Mandatory Service 

Bulletin F900–388, Revision 2, dated March 

10, 2010, which includes the following 

appendices. 

(i) Appendix 1, Revision 2, dated February 

15, 2010. 

(ii) Appendix 2, Revision 3, dated February 

15, 2009. 

(iii) Appendix 3, Revision 2, dated October 

21, 2009. 

(iv) Appendix 4, Revision 1, dated October 

20, 2009. 

(v) Appendix 5, Revision 3, dated March 

10, 2010. 

(4) For Model FALCON 2000 airplanes: 

Dassault Mandatory Service Bulletin F2000– 

358, Revision 3, dated March 10, 2010, which 

includes the following appendices. 

(i) Appendix 1, Revision 2, dated February 

15, 2010. 

(ii) Appendix 2, Revision 3, dated February 

15, 2009. 

(iii) Appendix 3, Revision 2, dated October 

21, 2009. 

(iv) Appendix 4, Revision 1, dated October 

20, 2009. 

(v) Appendix 5, Revision 3, dated March 

10, 2010. 

(5) For Model FALCON 2000EX airplanes: 

Dassault Mandatory Service Bulletin 

F2000EX–171, Revision 3, dated March 10, 

2010, which includes the following 

appendices. 

(i) Appendix 1, Revision 2, dated February 

15, 2010. 

(ii) Appendix 2, Revision 3, dated February 

15, 2009. 

(iii) Appendix 3, Revision 2, dated October 

21, 2009. 

(iv) Appendix 4, Revision 1, dated October 

20, 2009. 

(v) Appendix 5, Revision 3, dated March 

10, 2010. 

(h) Credit for Previous Actions 

This paragraph provides credit for the 

modifications required by paragraph (g) of 

this AD, if those actions were performed 

before the effective date of this AD using the 

service information (which is not 

incorporated by reference in this AD) 

specified in paragraphs (h)(1) through (h)(5) 

of this AD, as applicable. 

(1) For Model MYSTERE–FALCON 50 

airplanes: 

(i) Dassault Mandatory Service Bulletin 

F50–496, dated October 22, 2009, which 

includes the following appendices. 

(A) Appendix 1, Revision 1, dated October 

21, 2009. 

(B) Appendix 2, Revision 2, dated October 

21, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 2, dated October 

22, 2009. 

(ii) Dassault Mandatory Service Bulletin 

F50–496, Revision 1, dated February 15, 

2010, which includes the following 

appendices. 

(A) Appendix 1, Revision 2, dated 

February 15, 2010. 

(B) Appendix 2, Revision 3, dated February 

15, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 3, dated March 

10, 2010. 

(2) For Model FALCON 900EX airplanes: 

(iii) Dassault Mandatory Service Bulletin 

F900EX–329, dated September 25, 2009, 

which includes the following appendices. 

(A) Appendix 1, dated July 6, 2009. 

(B) Appendix 2, dated July 6, 2009. 

(C) Appendix 3, Revision 1, dated 

September 25, 2009. 

(D) Appendix 4, dated July 6, 2009. 

(E) Appendix 5, Revision 1, dated 

September 24, 2009. 

(iv) Dassault Mandatory Service Bulletin 

F900EX–329, Revision 1, dated October 22, 

2009, which includes the following 

appendices. 

(A) Appendix 1, Revision 1, dated October 

21, 2009. 

(B) Appendix 2, Revision 2, dated October 

21, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 2, dated October 

22, 2009. 

(v) Dassault Mandatory Service Bulletin 

F900EX–329, Revision 2, dated February 15, 

2010, which includes the following 

appendices. 

(A) Appendix 1, Revision 2, dated 

February 15, 2010. 

(B) Appendix 2, Revision 3, dated February 

15, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 3, dated March 

10, 2010. 

(3) For Model MYSTERE–FALCON 900 

airplanes: 

(i) Dassault Mandatory Service Bulletin 

F900–388, dated October 22, 2009, which 

includes the following appendices. 

(A) Appendix 1, Revision 1, dated October 

21, 2009. 

(B) Appendix 2, Revision 2, dated October 

21, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 2, dated October 

22, 2009. 

(ii) Dassault Mandatory Service Bulletin 

F900–388, Revision 1, dated February 15, 

2010, which includes the following 

appendices. 

(A) Appendix 1, Revision 2, dated 

February 15, 2010. 

(B) Appendix 2, Revision 3, dated February 

15, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 3, dated March 

10, 2010. 

(4) For Model FALCON 2000 airplanes: 

(i) Dassault Mandatory Service Bulletin 

F2000–358, dated September 25, 2009, which 

includes the following appendices. 

(A) Appendix 1, dated July 6, 2009. 

(B) Appendix 2, dated July 6, 2009. 

(C) Appendix 3, Revision 1, dated 

September 25, 2009. 

(D) Appendix 4, dated July 6, 2009. 

(E) Appendix 5, Revision 1, dated 

September 24, 2009. 

(ii) Dassault Mandatory Service Bulletin 

F2000–358, Revision 1, dated October 30, 

2009, which includes the following 

appendices. 

(A) Appendix 1, Revision 1, dated October 

21, 2009. 

(B) Appendix 2, Revision 2, dated October 

21, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 2, dated October 

22, 2009. 

(iii) Dassault Mandatory Service Bulletin 

F2000–358, Revision 2, dated February 15, 

2010, which includes the following 

appendices. 

(A) Appendix 1, Revision 2, dated 

February 15, 2010. 

(B) Appendix 2, Revision 3, dated February 

15, 2009. 


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(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 3, dated March 

10, 2010. 

(5) For Model FALCON 2000EX airplanes: 

(i) Dassault Mandatory Service Bulletin 

F2000EX–171, dated July 6, 2009, which 

includes the following appendices. 

(A) Appendix 1, dated July 6, 2009. 

(B) Appendix 2, dated July 6, 2009. 

(C) Appendix 3, dated July 6, 2009. 

(D) Appendix 4, dated July 6, 2009. 

(E) Appendix 5, dated July 6, 2009. 

(ii) Dassault Mandatory Service Bulletin 

F2000EX–171, Revision 1, dated October 22, 

2009, which includes the following 

appendices. 

(A) Appendix 1, Revision 1, dated October 

21, 2009. 

(B) Appendix 2, Revision 2, dated October 

21, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 2, dated October 

22, 2009. 

(iii) Dassault Mandatory Service Bulletin 

F2000EX–171, Revision 2, dated February 15, 

2010, which includes the following 

appendices. 

(A) Appendix 1, Revision 2, dated 

February 15, 2010. 

(B) Appendix 2, Revision 3, dated February 

15, 2009. 

(C) Appendix 3, Revision 2, dated October 

21, 2009. 

(D) Appendix 4, Revision 1, dated October 

20, 2009. 

(E) Appendix 5, Revision 3, dated March 

10, 2010. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the International Branch, send it to ATTN: 

Tom Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, WA 98057–3356; 

telephone (425) 227–1137; fax (425) 227– 

1149. Information may be emailed to: 9– 

ANM–116–AMOC–REQUESTS@faa.gov. 

Before using any approved AMOC, notify 

your appropriate principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office/ 

certificate holding 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. 

(j) Related Information 

Refer to MCAI European Aviation Safety 

Agency Airworthiness Directive 2011–0193, 

dated October 5, 2011, and the service 

information specified in paragraphs (g)(1) 

through (g)(5) of this AD, for related 

information. 

Issued in Renton, Washington, on 

September 26, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–24808 Filed 10–9–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1068; Directorate 

Identifier 2011–NM–073–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede two 

existing airworthiness directives (AD) 

that apply to certain The Boeing 

Company Model 737–100, –200, –200C, 

–300, –400, and –500 series airplanes. 

The existing AD, for certain Model 737– 

100, –200, and –200C series airplanes 

currently requires repetitive inspections 

of the aft end of each inboard flap track 

of the wing outboard flap, and 

corrective actions, if necessary. The 

existing AD, for certain Model 737–100, 

–200, –200C, –300, –400, and –500 

series airplanes requires repetitive 

inspections for cracks in the upper 

flange of the inboard track at the rear 

spar attachments of each outboard flap, 

and corrective action, if necessary. That 

AD also requires, for certain airplanes, 

repetitive inspections for discrepancies 

of the rear spar attachments and cracks 

in the upper flange of the inboard track 

at the rear spar attachment of each 

outboard flap, and eventual rework of 

the flap track assembly and rear spar 

attachments, including replacement of 

the flap track with a new track, if 

necessary. Since we issued those ADs, 

we have received reports that the work 

sequence and procedures used during 

track installation could also cause loose 

or cracked tracks. This proposed AD 

would require an inspection for damage 

and stop-drill repairs along the flap 

track; an inspection for damage, 

cracking, and stop-drill repairs along the 

track webs; and an inspection for 

damage of the flap track web and 

flanges, and corrective actions if 

necessary. This proposed AD would 

also require, for certain airplanes, an 

inspection for signs of movement 

between the tapered shim and anti-fret 

strip, installation of the anti-fret strip, 

and corrosion of the tapered shim and 

anti-fret strip; an inspection for signs of 

movement, cracks and corrosion where 

the track is attached to the wing rear 

spar; an inspection for cracking of the 

outboard edge of the track; an 

inspection for cracking of the inner edge 

of the track; and related investigative 

and corrective actions if necessary. This 

proposed AD would also require 

repetitive overhauls of the flap track and 

repetitive post-overhaul inspections and 

corrective actions if necessary; an 

inspection to determine the part number 

of the flap track assembly, and 

replacement of affected parts if 

necessary; and would also add airplanes 

to the applicability. We are proposing 

this AD to detect and correct cracking 

and damage in the flap track, which 

could cause loss of the outboard trailing 

edge flap and consequent reduced 

controllability of the airplane. 

DATES: We must receive comments on 

this proposed AD by November 26, 

2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, 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: Deliver to Mail 

address above 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, WA 98124–2207; 

telephone 206–544–5000, extension 1; 

fax 206–766–5680; 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, WA. For information on 


rmajette on DSK2TPTVN1PROD with PROPOSALS