28764 Federal Register / Vol. 78, No. 95 / Thursday, May 16, 2013 / Proposed Rules 

(e)(2), (e)(3), (e)(4)(G), (e)(4)(H), (e)(4)(I), 

(e)(5), (e)(8); (f); and (g). Additionally, the 

Secretary of Homeland Security, pursuant to 

5 U.S.C. 552a(k)(2), has exempted this system 

from the following provisions of the Privacy 

Act: 5 U.S.C. 552a(c)(3); (d); (e)(1), (e)(4)(G), 

(e)(4)(H), (e)(4)(I); and (f). Where a record 

received from another system has been 

exempted in that source system under 5 

U.S.C. 552a(j)(2), DHS will claim the same 

exemptions for those records that are claimed 

for the original primary systems of records 

from which they originated and claims any 

additional exemptions set forth here. 

Exemptions from these particular subsections 

are justified, on a case-by-case basis to be 

determined at the time a request is made, for 

the following reasons: 

(a) From subsection (c)(3) and (4) 

(Accounting for Disclosures) because release 

of the accounting of disclosures could alert 

the subject of an investigation of an actual or 

potential criminal, civil, or regulatory 

violation to the existence of that investigation 

and reveal investigative interest on the part 

of DHS as well as the recipient agency. 

Disclosure of the accounting would therefore 

present a serious impediment to law 

enforcement efforts and/or efforts to preserve 

national security. Disclosure of the 

accounting would also permit the individual 

who is the subject of a record to impede the 

investigation, to tamper with witnesses or 

evidence, and to avoid detection or 

apprehension, which would undermine the 

entire investigative process. 

(b) From subsection (d) (Access to Records) 

because access to the records contained in 

this system of records could inform the 

subject of an investigation of an actual or 

potential criminal, civil, or regulatory 

violation to the existence of that investigation 

and reveal investigative interest on the part 

of DHS or another agency. Access to the 

records could permit the individual who is 

the subject of a record to impede the 

investigation, to tamper with witnesses or 

evidence, and to avoid detection or 

apprehension. Amendment of the records 

could interfere with ongoing investigations 

and law enforcement activities and would 

impose an unreasonable administrative 

burden by requiring investigations to be 

continually reinvestigated. In addition, 

permitting access and amendment to such 

information could disclose classified and 

other security-sensitive information that 

could be detrimental to homeland security. 

(c) From subsection (e)(1) (Relevancy and 

Necessity of Information) because in the 

course of investigations into potential 

violations of federal law, the accuracy of 

information obtained or introduced 

occasionally may be unclear, or the 

information may not be strictly relevant or 

necessary to a specific investigation. In the 

interests of effective law enforcement, it is 

appropriate to retain all information that may 

aid in establishing patterns of unlawful 

activity. 

(d) From subsection (e)(2) (Collection of 

Information from Individuals) because 

requiring that information be collected from 

the subject of an investigation would alert the 

subject to the nature or existence of the 

investigation, thereby interfering with that 

investigation and related law enforcement 

activities. 

(e) From subsection (e)(3) (Notice to 

Subjects) because providing such detailed 

information could impede law enforcement 

by compromising the existence of a 

confidential investigation or reveal the 

identity of witnesses or confidential 

informants. 

(f) From subsections (e)(4)(G), (e)(4)(H), 

and (e)(4)(I) (Agency Requirements) and (f) 

(Agency Rules), because portions of this 

system are exempt from the individual access 

provisions of subsection (d) for the reasons 

noted above, and therefore DHS is not 

required to establish requirements, rules, or 

procedures with respect to such access. 

Providing notice to individuals with respect 

to existence of records pertaining to them in 

the system of records or otherwise setting up 

procedures pursuant to which individuals 

may access and view records pertaining to 

themselves in the system would undermine 

investigative efforts and reveal the identities 

of witnesses, and potential witnesses, and 

confidential informants. 

(g) From subsection (e)(5) (Collection of 

Information) because with the collection of 

information for law enforcement purposes, it 

is impossible to determine in advance what 

information is accurate, relevant, timely, and 

complete. Compliance with subsection (e)(5) 

would preclude DHS agents from using their 

investigative training and exercise of good 

judgment to both conduct and report on 

investigations. 

(h) From subsection (e)(8) (Notice on 

Individuals) because compliance would 

interfere with DHS’s ability to obtain, serve, 

and issue subpoenas, warrants, and other law 

enforcement mechanisms that may be filed 

under seal and could result in disclosure of 

investigative techniques, procedures, and 

evidence. 

(i) From subsection (g)(1) (Civil Remedies) 

to the extent that the system is exempt from 

other specific subsections of the Privacy Act. 

Dated: April 22, 2013. 

Jonathan R. Cantor, 

Acting Chief Privacy Officer, Department of 

Homeland Security. 

[FR Doc. 2013–11727 Filed 5–15–13; 8:45 am] 

BILLING CODE 9111–28–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0421; Directorate 

Identifier 2013–NM–003–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 737–300, 

–400, and –500 series airplanes. This 

proposed AD was prompted by fuel 

system reviews conducted by the 

manufacturer. This proposed AD would 

require, depending on airplane 

configuration, replacing fuel pump 

power control relays with new relays 

having a ground fault interrupter (GFI) 

feature, installing ground studs and a 

bonding jumper, doing certain bonding 

resistance measurements, and changing 

the GFI relay position. This proposed 

AD would also require revising the 

maintenance program to incorporate 

certain airworthiness limitations. We 

are proposing this AD to prevent 

damage to the fuel pumps caused by 

electrical arcing that could introduce an 

ignition source in the fuel tank, which, 

in combination with flammable fuel 

vapors, could result in a fuel tank 

explosion and consequent loss of the 

airplane. 

DATES: We must receive comments on 

this proposed AD by July 1, 2013. 

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 

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 


erowe on DSK2VPTVN1PROD with PROPOSALS-1
Federal Register / Vol. 78, No. 95 / Thursday, May 16, 2013 / Proposed Rules 28765 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Georgios Roussos, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

Office, 1601 Lind Avenue SW., Renton, 

WA 98057–3356; phone: 425–917–6482; 

fax: 425–917–6590; email: 

georgios.roussos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2013–0421; Directorate Identifier 2013– 

NM–003–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 

The FAA has examined the 

underlying safety issues involved in fuel 

tank explosions on several large 

transport airplanes, including the 

adequacy of existing regulations, the 

service history of airplanes subject to 

those regulations, and existing 

maintenance practices for fuel tank 

systems. As a result of those findings, 

we issued a regulation titled ‘‘Transport 

Airplane Fuel Tank System Design 

Review, Flammability Reduction and 

Maintenance and Inspection 

Requirements’’ (66 FR 23086, May 7, 

2001). In addition to new airworthiness 

standards for transport airplanes and 

new maintenance requirements, this 

rule included Special Federal Aviation 

Regulation No. 88 (‘‘SFAR 88,’’ 

Amendment 21–78, and subsequent 

Amendments 21–82 and 21–83). 

Among other actions, SFAR 88 

requires certain type design (i.e., type 

certificate (TC) and supplemental type 

certificate (STC)) holders to substantiate 

that their fuel tank systems can prevent 

ignition sources in the fuel tanks. This 

requirement applies to type design 

holders for large turbine-powered 

transport airplanes and for subsequent 

modifications to those airplanes. It 

requires them to perform design reviews 

and to develop design changes and 

maintenance procedures if their designs 

do not meet the new fuel tank safety 

standards. As explained in the preamble 

to the rule, we intended to adopt 

airworthiness directives to mandate any 

changes found necessary to address 

unsafe conditions identified as a result 

of these reviews. 

In evaluating these design reviews, we 

have established four criteria intended 

to define the unsafe conditions 

associated with fuel tank systems that 

require corrective actions. The 

percentage of operating time during 

which fuel tanks are exposed to 

flammable conditions is one of these 

criteria. The other three criteria address 

the failure types under evaluation: 

single failures, combination of failures, 

and unacceptable (failure) experience. 

For all three failure criteria, the 

evaluations included consideration of 

previous actions taken that may mitigate 

the need for further action. 

We have determined that the actions 

identified in this proposed AD are 

necessary to reduce the potential of 

ignition sources inside fuel tanks, 

which, in combination with flammable 

fuel vapors, could result in a fuel tank 

explosion and consequent loss of the 

airplane. 

We received a report of incorrect 

operation of a new GFI relay having part 

number (P/N) 9524G–10674 after AD 

2011–12–09, Amendment 39–16716 (76 

FR 33988, June 10, 2011), was 

incorporated. Subsequent investigation 

found that electromagnetic interference 

(EMI) between the new P/N 9524G– 

10674 relays and adjacent P/N KCG– 

X4L–001 relays could cause problems 

with the function of the new relays and 

the operation of the GFI system. The GFI 

system might not function correctly 

after installation on certain airplanes. 

Related Rulemaking 

The requirements of AD 2011–12–09, 

Amendment 39–16716 (76 FR 33988, 

June 10, 2011), affect all airplanes of 

this proposed AD. This proposed AD 

provides terminating actions for those 

airplanes. 

Relevant Service Information 

We reviewed Boeing Alert Service 

Bulletin 737–28A1212, Revision 2, 

dated October 18, 2012. For information 

on the procedures and compliance 

times, see this service information at 

http://www.regulations.gov by searching 

for Docket No. FAA–2013–0421. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. 

The phrase ‘‘related investigative 

actions’’ might be used in this proposed 

AD. ‘‘Related investigative actions’’ are 

follow-on actions that: (1) are related to 

the primary actions, and (2) are actions 

that further investigate the nature of any 

condition found. Related investigative 

actions in an AD could include, for 

example, inspections. 

In addition, the phrase ‘‘corrective 

actions’’ might be used in this proposed 

AD. ‘‘Corrective actions’’ are actions 

that correct or address any condition 

found. Corrective actions in an AD 

could include, for example, repairs. 

This proposed 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 (l) of this 

proposed AD. The request should 

include a description of changes to the 

required inspections that will ensure the 

continued operational safety of the 

airplane. 

Costs of Compliance 

We estimate that this proposed AD 

affects 14 airplanes of U.S. registry. We 

estimate the following costs to comply 

with this proposed AD: 


erowe on DSK2VPTVN1PROD with PROPOSALS-1
28766 Federal Register / Vol. 78, No. 95 / Thursday, May 16, 2013 / Proposed Rules 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. 

operators 

Replace fuel pump power control 

relays, install ground studs and 

a bonding jumper, and do certain bonding resistance measurements, and change the GFI 

relay position, depending on 

airplane configuration.

Up to 31 work-hours × $85 per 

hour = $2,635.

Up to $21,338 ........... Up to $23,973 ........... Up to $335,622. 

Maintenance program revision ..... 1 work-hour × $85 per hour = $85 $0 .............................. $85 ............................ $1,190. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701: 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

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

the DOT Regulatory Policies and 

Procedures (44 FR 11034, February 26, 

1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

The Boeing Company: Docket No. FAA– 

2013–0421; Directorate Identifier 2013–NM– 

003–AD. 

(a) Comments Due Date 

We must receive comments by July 1, 2013. 

(b) Affected ADs 

Certain requirements of this AD terminate 

certain requirements of AD 2011–12–09, 

Amendment 39–16716 (76 FR 33988, June 

10, 2011). 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–300, –400, and –500 series 

airplanes; certificated in any category; 

identified as Groups 5, 6, 7, and 9 in Boeing 

Alert Service Bulletin 737–28A1212, 

Revision 2, dated October 18, 2012. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 2822, Fuel boost pump. 

(e) Unsafe Condition 

This AD was prompted by fuel system 

reviews conducted by the manufacturer. We 

are issuing this AD to prevent damage to the 

fuel pumps caused by electrical arcing that 

could introduce an ignition source in the fuel 

tank, which, in combination with flammable 

fuel vapors, could result in a fuel tank 

explosion and consequent loss of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Installation of Ground Studs and Bonding 

Jumper and Fuel Boost Pump Relays 

Replacement 

For airplanes in Groups 5, 6, 7, and 9, 

Configuration 1, as identified in Boeing Alert 

Service Bulletin 737–28A1212, Revision 2, 

dated October 18, 2012 (airplanes on which 

Boeing Alert Service Bulletin 737–28A1212 

was not done): Within 60 months after the 

effective date of this AD, install ground studs 

and a bonding jumper, replace fuel boost 

pump relays, and do certain bonding 

resistance measurements, in accordance with 

Part 1 of the Accomplishment Instructions of 

Boeing Alert Service Bulletin 737–28A1212, 

Revision 2, dated October 18, 2012. Doing the 

actions required by this paragraph terminates 

the requirements of paragraph (g) of AD 

2011–12–09, Amendment 39–16716 (76 FR 

33988, June 10, 2011), for Groups 5, 6, 7, and 

9, Configuration 1 only, provided that the 

requirements of paragraph (g) of this AD are 

done at the time given in AD 2011–12–09. 

(h) Ground Studs and Bonding Jumper 

Installation and GFI Relay Position Change 

For airplanes in Groups 5, 6, 7, and 9, 

Configuration 2, as identified in Boeing Alert 

Service Bulletin 737–28A1212, Revision 2, 

dated October 18, 2012 (airplanes on which 

Boeing Alert Service Bulletin 737–28A1212, 

dated July 23, 2009 was done): Within 60 

months after the effective date of this AD, 

install ground studs and a bonding jumper, 

change the GFI relay position, and do certain 

bonding resistance measurements, in 

accordance with Part 2 of the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 737–28A1212, Revision 2, 

dated October 18, 2012. Doing the actions 

required by this paragraph terminates the 

requirements of paragraph (h) of AD 2011– 

12–09, Amendment 39–16716 (76 FR 33988, 

June 10, 2011), for airplanes identified as 

Groups 5, 6, 7, and 9, Configuration 2 only, 

provided that the requirements of paragraph 

(h) of this AD are done at the time given in 

AD 2011–12–09. 

(i) Ground Fault Interrupt (GFI) Relay 

Position Change 

For airplanes in Groups 5, 6, 7, and 9, 

Configuration 3, as identified in Boeing Alert 

Service Bulletin 737–28A1212, Revision 2, 

dated October 18, 2012 (certain airplanes on 

which Boeing Alert Service Bulletin 737– 


erowe on DSK2VPTVN1PROD with PROPOSALS-1
Federal Register / Vol. 78, No. 95 / Thursday, May 16, 2013 / Proposed Rules 28767 

28A1212, Revision 1, dated August 27, 2010 

was done): Within 60 months after the 

effective date of this AD, change the GFI 

relay position and do certain bonding 

resistance measurements, in accordance with 

Part 4 of the Accomplishment Instructions of 

Boeing Alert Service Bulletin 737–28A1212, 

Revision 2, dated October 18, 2012. 

(j) Maintenance Program Revision 

Concurrently with accomplishing the 

actions required by paragraph (g), (h), or (i) 

of this AD, or within 30 days after the 

effective date of this AD, whichever occurs 

later: Revise the maintenance program by 

incorporating Airworthiness Limitation 28– 

AWL–22 of Boeing 737–100/200/200C/300/ 

400/500 AWL and Certification Maintenance 

Requirements (CMRs), Document D6–38278– 

CMR, Revision August 2012. The initial 

compliance time for the actions specified in 

AWL 28–AWL–22 of Boeing 737–100/200/ 

200C/300/400/500 AWL and Certification 

Maintenance Requirements (CMRs), 

Document D6–38278–CMR, Revision August 

2012, is within 1 year after accomplishing the 

installation required by paragraph (g), (h), or 

(i) of this AD, or within 1 year after the 

effective date of this AD, whichever occurs 

later. 

(k) No Alternative Actions, Intervals, and/or 

Critical Design Configuration Control 

Limitations (CDCCLs) 

After accomplishing the revision required 

by paragraph (j) of this AD, no alternative 

actions (e.g., inspections) or intervals may be 

used unless the actions or intervals are 

approved as an alternative method of 

compliance (AMOC) in accordance with the 

procedures specified in paragraph (l) of this 

AD. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle Aircraft 

Certification Office (ACO), 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 manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. 

(2) 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. 

(m) Related Information 

(1) For more information about this AD, 

contact Georgios Roussos, Aerospace 

Engineer, Systems and Equipment Branch, 

ANM–130S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

Renton, WA 98057–3356; phone: 425–917– 

6482; fax: 425–917–6590; email: 

georgios.roussos@faa.gov. 

(2) For service information identified in 

this 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 the availability of 

this material at the FAA, call 425–227–1221. 

Issued in Renton, Washington, on May 8, 

2013. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–11694 Filed 5–15–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0420; Directorate 

Identifier 2011–NM–241–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 adopt a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 747–100, 

747–100B, 747–100B SUD, 747–200B, 

747–200C, 747–200F, 747–300, 747– 

400, 747–400D, 747–400F, 747SR, and 

747SP series airplanes. This proposed 

AD was prompted by a report of a 

disbonded doubler and a skin crack in 

section 41 of the fuselage, and multiple 

reports of cracked or missing fastener 

heads. This proposed AD would require 

repetitive inspections for cracking of the 

fuselage skin, discrepant fasteners, and 

for disbonds at the doublers; and related 

investigative and corrective actions if 

necessary. For certain airplanes, this 

proposed AD would also require a 

terminating repair for repair doublers. 

We are proposing this AD to prevent 

rapid decompression and loss of 

structural integrity of the airplane due 

to such disbonding and subsequent 

cracking of the skin panels. 

DATES: We must receive comments on 

this proposed AD by July 1, 2013. 

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 

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 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Nathan Weigand, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, 

Seattle Aircraft Certification Office 

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

WA 98057–3356; phone: 425–917–6428; 

fax: 425–917–6590; email: 

Nathan.P.Weigand@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2013–0420; Directorate Identifier 2011– 

NM–241–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 


erowe on DSK2VPTVN1PROD with PROPOSALS-1