33988 Federal Register / Vol. 76, No. 112 / Friday, June 10, 2011 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0028; Directorate 

Identifier 2009–NM–228–AD; Amendment 

39–16716; AD 2011–12–09] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 737–100, –200, –200C, 

–300, –400, and –500 Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD requires, 

depending on airplane configuration, 

doing certain wiring changes, replacing 

the fuel pump power control relays for 

the main, center, and auxiliary tanks, as 

applicable, with new relays having a 

ground fault interrupter (GFI) feature, 

performing certain bonding resistance 

measurements, and modifying relay 

module assemblies. This AD also 

requires revising the maintenance 

program to incorporate certain 

Airworthiness Limitations. 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. 

DATES: This AD is effective July 15, 

2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of July 15, 2011. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, PO 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 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: 

Georgios Roussos, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

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

Renton, Washington 98057–3356; 

phone: 425–917–6482; fax: 425–917– 

6590; e-mail: georgios.roussos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to the 

specified products. That NPRM 

published in the Federal Register on 

January 21, 2011 (76 FR 3856). That 

NPRM proposed to require, depending 

on airplane configuration, doing certain 

wiring changes, replacing the fuel pump 

power control relays for the main, 

center, and auxiliary tanks, as 

applicable, with new relays having a 

GFI feature, performing certain bonding 

resistance measurements, and 

modifying relay module assemblies. 

That NPRM also proposed to require 

revising the maintenance program to 

incorporate Airworthiness Limitations 

(AWLs) 28–AWL–23 (for Model 737– 

100, 737–200, and 737–200C series 

airplanes) and 28–AWL–22 (for Model 

737–300, 737–400, and 737–500 series 

airplanes). 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal and the FAA’s 

response to each comment. Boeing 

concurs with the content of this AD. 

Request To Correct Typographical 

Errors 

Alaska Airlines requested that 

corrections be made to certain 

accomplishment instructions of Boeing 

Alert Service Bulletin 737–28A1212, 

Revision 1, dated August 27, 2010. 

Alaska Airlines requested that Boeing 

Information Notice 737–28A1212 IN 01, 

dated October 7, 2010, which specifies 

those corrections, be incorporated into 

the AD. 

We agree that typographical errors in 

that service bulletin need to be 

corrected. Where paragraph 3.B.1.s. of 

Part 1 of the Accomplishment 

Instructions of Boeing Alert Service 

Bulletin 737–28A1212, Revision 1, 

dated August 27, 2010, states that the 

affected airplanes are ‘‘Group 11, 

Configuration 1,’’ that paragraph also 

applies to ‘‘Group 13, Configuration 1.’’ 

The action specified in paragraph 

3.B.1.s. of that service bulletin 

(changing a wire bundle) is a logical 

outgrowth of the actions specified in 

that service bulletin. Paragraph (j) of 

this AD addresses this change. Also, the 

figure in Appendix A, paragraph 1., of 

Boeing Alert Service Bulletin 737– 

28A1212, Revision 1, dated August 27, 

2010, is not identified, but should be 

identified as ‘‘Figure 1.’’ Paragraph (k) of 

this AD addresses this change. That 

information notice includes additional 

changes to that service bulletin; 

however, they are not part of the 

accomplishment instructions, and 

therefore are not addressed in our 

response. 

Additional Change 

Boeing has issued Section 9 of Boeing 

737–100/200/200C/300/400/500 

Airworthiness Limitations (AWL) and 

Certification Maintenance Requirements 

(CMRs), Document D6–38278–CMR, 

Revision August 2010, to update certain 

AWLs other than those specified in this 

AD. The document reference has been 

updated in paragraph (l) of this AD. 

We have also clarified the intent of 

paragraph (n) of this AD by revising the 

heading. 

We have also added paragraph (o) of 

this AD to give credit for revising the 

maintenance program by incorporating 

AWLs 28–AWL–22 (for Model 737–300, 

–400, and –500 series airplanes) and 28– 

AWL–23 (for Model 737–100, –200, and 

–200C series airplanes), in accordance 

with Section 9 of Boeing 737–100/200/ 

200C/300/400/500 Airworthiness 

Limitations (AWL) and Certification 

Maintenance Requirements (CMRs), 

Document D6–38278–CMR, Revision 

May 2009. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously. 

We have determined that these changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

correcting the unsafe condition; and 

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Federal Register / Vol. 76, No. 112 / Friday, June 10, 2011 / Rules and Regulations 33989 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of the AD. 

Costs of Compliance 

We estimate that this AD affects 750 

airplanes of U.S. registry. 

We estimate the following costs to 

comply with this AD: 

TABLE—ESTIMATED COSTS

Action Work hours Average labor 

rate per hour Parts Cost per product 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Replacement of power control relays.4 to 9 1 $85 $14,500 $14,840 to 

$15,265 1.

750 $11,130,000 to 

$11,448,750 1

Modification ..................................... 5 $85 $0 $425 ................... 750 $318,750 

Maintenance program revision ....... 1 $85 $0 $85 ..................... 750 $63,750 

1 Depending on airplane configuration. 

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 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

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

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, 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 airworthiness 

directive (AD): 

2011–12–09 The Boeing Company: 

Amendment 39–16716; Docket No. 

FAA–2011–0028; Directorate Identifier 

2009–NM–228–AD. 

Effective Date 

(a) This AD is effective July 15, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 737–100, –200, –200C, 

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

certificated in any category; as identified in 

Boeing Alert Service Bulletin 737–28A1212, 

Revision 1, dated August 27, 2010. 

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 (p) 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 28: Fuel. 

Unsafe Condition 

(e) This AD results from fuel system 

reviews conducted by the manufacturer. The 

Federal Aviation Administration is 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. 

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. 

Part 1: Wiring Changes, Relay Replacements, 

and Certain Bonding Resistance 

Measurements for Certain Airplanes 

(g) For airplanes on which Boeing Alert 

Service Bulletin 737–28A1212, dated July 23, 

2009, has not been incorporated as of the 

effective date of this AD: Within 60 months 

after the effective date of this AD, do the 

applicable actions required by paragraph 

(g)(1) or (g)(2) of this AD. 

(1) Airplanes without the M181, M182, and 

M183 supplier relay modules installed: Do 

the wiring changes; replace the fuel pump 

power control relays for the main, center, and 

auxiliary tanks, as applicable, with new 

relays having a ground fault interrupter (GFI) 

feature; and do certain bonding resistance 

measurements to verify that certain bonding 

requirements are met; in accordance with 

Part 1 of the Accomplishment Instructions of 

Boeing Alert Service Bulletin 737–28A1212, 

Revision 1, dated August 27, 2010, except as 

provided by paragraphs (j) and (k) of this AD. 

(2) Airplanes with the M181, M182, and 

M183 supplier relay modules installed: 

Modify the M181, M182, and M183 relay 

module assemblies, and do certain bonding 

resistance measurements to verify that 

certain bonding requirements are met, in 

accordance with Part 1 of the 

Accomplishment Instructions of Boeing Alert 

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33990 Federal Register / Vol. 76, No. 112 / Friday, June 10, 2011 / Rules and Regulations 

Service Bulletin 737–28A1212, Revision 1, 

dated August 27, 2010, except as provided by 

paragraphs (j) and (k) of this AD. 

Note 2: Boeing Alert Service Bulletin 737– 

28A1212, Revision 1, dated August 27, 2010, 

refers to BAE Systems Service Bulletin 65– 

49808–24–01, Revision 1, dated July 19, 

2010, as an additional source of guidance for 

doing the modification and certain bonding 

resistance measurements on the M181, M182, 

and M183 supplier relay modules. 

Part 2: Wiring Changes and Certain Bonding 

Measurements for Certain Airplanes 

(h) For airplanes on which Boeing Alert 

Service Bulletin 737–28A1212, dated July 23, 

2009, has been incorporated as of the 

effective date of this AD, and on which the 

M181, M182, and M183 supplier relay 

modules are not installed: Within 60 months 

after the effective date of this AD, do the 

wiring changes and certain bonding 

measurements to verify that certain bonding 

requirements are met, in accordance with 

Part 2 of the Accomplishment Instructions of 

Boeing Alert Service Bulletin 737–28A1212, 

Revision 1, dated August 27, 2010, except as 

provided by paragraphs (j) and (k) of this AD. 

Part 3: Certain Bonding Measurements for 

Certain Airplanes 

(i) For airplanes on which Boeing Alert 

Service Bulletin 737–28A1212, dated July 23, 

2009, has been incorporated as of the 

effective date of this AD, and on which the 

M181, M182, and M183 supplier relay 

modules are installed: Within 60 months 

after the effective date of this AD, do certain 

bonding measurements to verify that certain 

bonding requirements are met, in accordance 

with Part 3 of the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

737–28A1212, Revision 1, dated August 27, 

2010, except as provided by paragraphs (j) 

and (k) of this AD. 

Note 3: Boeing Alert Service Bulletin 737– 

28A1212, Revision 1, dated August 27, 2010, 

refers to BAE Systems Service Bulletin 65– 

49808–24–01, Revision 1, dated July 19, 

2010, as an additional source of guidance for 

doing the modification and certain bonding 

resistance measurements on the M181, M182, 

and M183 supplier relay modules. 

Exceptions to the Service Information 

(j) Where paragraph 3.B.1.s. of Part 1 of the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 737–28A1212, Revision 1, 

dated August 27, 2010, states the 

applicability as ‘‘Group 11, Configuration 1,’’ 

that paragraph also applies to ‘‘Group 13, 

Configuration 1.’’ 

(k) The figure in Appendix A, paragraph 1., 

of Boeing Alert Service Bulletin 737– 

28A1212, Revision 1, dated August 27, 2010, 

should be identified as Figure 1 (immediately 

following the text). 

Maintenance Program Revisions 

(l) Concurrently with accomplishing the 

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

of this AD, as applicable, or within 30 days 

after the effective date of this AD, whichever 

occurs later, revise the maintenance program 

by incorporating the applicable airworthiness 

limitation (AWL) specified in paragraph (l)(1) 

or (l)(2) of this AD. 

(1) For Model 737–100, –200, and –200C 

series airplanes: AWL 28–AWL–23 of Section 

9 of Boeing 737–100/200/200C/300/400/500 

Airworthiness Limitations (AWLs) and 

Certification Maintenance Requirements 

(CMRs), Document D6–38278–CMR, Revision 

August 2010. The initial compliance time for 

the actions specified in AWL 28–AWL–23 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. 

(2) For Model 737–300, –400, and –500 

series airplanes: AWL 28–AWL–22 of Section 

9 of Boeing 737–100/200/200C/300/400/500 

AWL and Certification Maintenance 

Requirements (CMRs), Document D6–38278– 

CMR, Revision August 2010. The initial 

compliance time for the actions specified in 

AWL 28–AWL–22 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. 

No Alternative Inspections or Inspection 

Intervals 

(m) After accomplishment of the actions 

required by paragraph (g), (h), or (i) of this 

AD, as applicable, no alternative inspections 

or inspection intervals may be used, unless 

the inspections or intervals are approved as 

an alternative method of compliance in 

accordance with the procedures specified in 

paragraph (p) of this AD. 

Optional Terminating Action 

(n) Revising the maintenance program to 

incorporate AWLs 28–AWL–22 (for Model 

737–300, –400, and –500 series airplanes) 

and 28–AWL–23 (for Model 737–100, –200, 

and –200C series airplanes) in accordance 

with paragraphs (g)(1) and (g)(2) of AD 2008– 

10–09 R1, amendment 39–16148, terminates 

the requirements of paragraph (l) of this AD. 

Credit for Actions Accomplished in 

Accordance With Earlier Revisions of AWLs 

(o) Revising the maintenance program to 

incorporate AWLs 28–AWL–22 (for Model 

737–300, –400, and –500 series airplanes) 

and 28–AWL–23 (for Model 737–100, –200, 

and –200C series airplanes) before the 

effective date of this AD, in accordance with 

Section 9 of Boeing 737–100/200/200C/300/ 

400/500 Airworthiness Limitations (AWLs) 

and Certification Maintenance Requirements 

(CMRs), Document D6–38278–CMR, Revision 

May 2009, is acceptable for compliance with 

the requirements of paragraph (l) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(p)(1) The Manager, Seattle Aircraft 

Certification Office, 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 ACO, sent it to ATTN: Georgios 

Roussos, Aerospace Engineer, Systems and 

Equipment Branch, ANM–130S, FAA, Seattle 

Aircraft Certification Office (ACO), 1601 Lind 

Avenue, SW., Renton, Washington 98057– 

3356; phone: 425–917–6482; fax: 425–917– 

6590; e-mail: georgios.roussos@faa.gov. Or, 

e-mail information to 9-ANM-Seattle-ACOAMOC-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. The AMOC 

approval letter must specifically reference 

this AD. 

Material Incorporated by Reference 

(q) You must use Boeing Alert Service 

Bulletin 737–28A1212, Revision 1, dated 

August 27, 2010; and Section 9 of the Boeing 

737–100/200/200C/300/400/500 

Airworthiness Limitations (AWLs) and 

Certification Maintenance Requirements 

(CMRs), Document D6–38278–CMR, Revision 

August 2010; as applicable; to do the actions 

required by this AD, unless the AD specifies 

otherwise. This document is identified as 

Section 9 only on the List of Effective Pages. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information under 5 U.S.C. 552(a) 

and 1 CFR part 51. 

(2) For service information identified in 

this 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. 

(3) You may review copies of the 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. 

(4) You may also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, call 202–741– 

6030, or go to http://www.archives.gov/

federal_register/code_of_federal_regulations/

ibr_locations.html. 

Issued in Renton, Washington, on May 27, 

2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–14203 Filed 6–9–11; 8:45 am] 

BILLING CODE 4910–13–P 

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