25974 Federal Register / Vol. 73, No. 90 / Thursday, May 8, 2008 / Rules and Regulations 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

Material Incorporated by Reference 

(l) You must use Boeing 737–100/200/ 

200C/300/400/500 Airworthiness Limitations 

(AWLs) and Certification Maintenance 

Requirements (CMRs), D6–38278–CMR, 

Revision March 2008, to do the actions 

required by this AD, unless the AD specifies 

otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this 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, P.O. Box 3707, Seattle, 

Washington 98124–2207. 

(3) You may review copies of the service 

information incorporated by reference at the 

FAA, Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington; or at 

the National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 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 April 29, 

2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–9922 Filed 5–7–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2006–26710; Directorate 

Identifier 2006–NM–147–AD; Amendment 

39–15517; AD 2008–10–11] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 757 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Boeing Model 757 airplanes. This AD 

requires revising the Airworthiness 

Limitations (AWLs) section of the 

Instructions for Continued 

Airworthiness by incorporating new 

limitations for fuel tank systems to 

satisfy Special Federal Aviation 

Regulation No. 88 requirements. This 

AD also requires the initial inspection of 

certain repetitive AWL inspections to 

phase-in those inspections, and repair if 

necessary. This AD results from a design 

review of the fuel tank systems. We are 

issuing this AD to prevent the potential 

for ignition sources inside fuel tanks 

caused by latent failures, alterations, 

repairs, or maintenance actions, which, 

in combination with flammable fuel 

vapors, could result in a fuel tank 

explosion and consequent loss of the 

airplane. 

DATES: This AD becomes effective June 

12, 2008. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of June 12, 2008. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, P.O. Box 3707, 

Seattle, Washington 98124–2207. 

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 (telephone 800–647–5527) 

is the 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: Judy 

Coyle, Aerospace Engineer, Propulsion 

Branch, ANM–140S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 917–6497; 

fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The FAA issued a supplemental 

notice of proposed rulemaking (NPRM) 

to amend 14 CFR part 39 to include an 

AD that would apply to all Boeing 

Model 757 airplanes. That supplemental 

NPRM was published in the Federal 

Register on August 1, 2007 (72 FR 

41963). That supplemental NPRM 

proposed to require revising the 

Airworthiness Limitations (AWLs) 

section of the Instructions for Continued 

Airworthiness (ICA) by incorporating 

new limitations for fuel tank systems to 

satisfy Special Federal Aviation 

Regulation No. 88 requirements. That 

supplemental NPRM also proposed to 

require the initial inspection of certain 

repetitive inspections specified in the 

AWLs to phase-in those inspections, 

and repair if necessary. That 

supplemental NPRM also proposed to 

revise the original NPRM by aligning the 

compliance time for revising the AWLs 

section with the compliance date of the 

special maintenance program 

requirements, updating the listing of 

applicable airplane maintenance 

manuals in Appendix 1, and clarifying 

certain actions. 

Actions Since Supplemental NPRM 

Was Issued 

Since we issued the supplemental 

NPRM, Boeing has issued Temporary 

Revision (TR) 09–008, dated March 

2008. Boeing TR 09–008 is published as 

Section 9 of the Boeing 757 

Maintenance Planning Document (MPD) 

Document, D622N001–9, Revision 

March 2008 (hereafter referred to as 

‘‘Revision March 2008 of the MPD’’). 

The supplemental NPRM referred to 

Revision March 2006 of the MPD as the 

appropriate source of service 

information for accomplishing the 

proposed actions. Revision March 2008 

of the MPD, among other actions, 

includes the following changes: 

• Removes the repetitive task interval 

of 36,000 flight cycles from AWLs No. 

28–AWL–01, No. 28–AWL–03, and No. 

28–AWL–14. 

• Revises the task description for 

AWL No. 28–AWL–01 to harmonize it 

with AWL No. 28–AWL–02 by removing 

references to certain station numbers. 

• Revises AWL No. 28–AWL–03 to 

reflect the new maximum loop 

resistance values associated with the 

lightning protection of the 

unpressurized fuel quantity indicating 

system (FQIS) wire bundle installations. 

Accordingly, we have revised 

paragraphs (f), (g), and (h) of this AD to 

refer to Revision March 2008 of the 

MPD. We also have added a new 

paragraph (j) to this AD specifying that 

actions done before the effective date of 

this AD in accordance with Revisions 

March 2006 through November 2007 of 

the MPD are acceptable for compliance 

with the corresponding requirements of 

paragraphs (g) and (h) of this AD. 

We also have removed reference to 

36,000 total flight cycles from Table 1 of 

this AD and revised the initial threshold 

for accomplishing AWLs No. 28–AWL–

01, No. 28–AWL–03, and No. 28–AWL–

14 to within 120 months since the date 

of issuance of the original standard 

airworthiness certificate or the date of 

issuance of the original export 

certificate of airworthiness. 


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Federal Register / Vol. 73, No. 90 / Thursday, May 8, 2008 / Rules and Regulations 25975 

Operators should note that we have 

revised paragraph (g) of this AD to 

require incorporating only AWLs No. 

28–AWL–01 through No. 28–AWL–24 

inclusive. AWL No. 28–AWL–25 was 

added in Revision October 2006 of the 

MPD, and AWL No. 28–AWL–26 was 

added in Revision January 2007 of the 

MPD. However, as an optional action, 

operators may incorporate those AWLs 

as specified in paragraph (g) of this AD. 

We have issued a separate NPRM 

(Docket No. FAA–2007–28598) that, in 

part, proposes to incorporate AWLs No. 

28–AWL–20 and No. 28–AWL–26 into 

the AWLs section of the ICA. That 

NPRM was published in the Federal 

Register on July 9, 2007 (72 FR 37132). 

We have also issued AD 2008–06–03, 

amendment 39–15415 (73 FR 13081, 

March 12, 2008) that, in part, requires 

revising the AWLs section of the ICA to 

incorporate AWLs No. 28–AWL–23, No. 

28–AWL–24, and No. 28–AWL–25. 

Therefore, we have added a new 

paragraph (k) to this AD specifying that 

incorporating AWLs No. 28–AWL–23, 

No. 28–AWL–24, and No. 28–AWL–25 

in accordance with paragraph (g) of this 

AD terminates the action required by 

paragraph (h)(2) of AD 2008–06–03. 

Other Changes Made to This AD 

We have revised paragraph (h) of this 

AD to clarify that the actions identified 

in Table 1 of this AD must be done at 

the compliance time specified in that 

table. Also, for standardization 

purposes, we have revised this AD in 

the following ways: 

• We have added a new paragraph (i) 

to this AD to specify that no alternative 

inspections, inspection intervals, or 

critical design configuration control 

limitations (CDCCLs) may be used 

unless they are part of a later approved 

revision of Revision March 2008 of the 

MPD, or unless they are approved as an 

alternative method of compliance 

(AMOC). Inclusion of this paragraph in 

the AD is intended to ensure that the 

AD-mandated airworthiness limitations 

changes are treated the same as the 

airworthiness limitations issued with 

the original type certificate. 

• We have revised Note 1 of this AD 

to clarify that an operator must request 

approval for an AMOC if the operator 

cannot accomplish the proposed 

inspections because an airplane has 

been previously modified, altered, or 

repaired in the areas addressed by the 

proposed inspections. 

• We have revised paragraph (h) of 

this AD to specify that accomplishing 

the applicable AWLs in Table 1 of this 

AD as part of an FAA-approved 

maintenance program before the 

applicable compliance time constitutes 

compliance with the applicable 

requirements of that paragraph. 

• We have deleted Appendix 1 from 

this AD, since Revision March 2008 of 

the MPD already contains most of the 

updated information that is listed in 

Appendix 1 of the NPRM. 

Comments 

We provided the public the 

opportunity to participate in the 

development of this AD. We have 

considered the comments received. 

Request To Extend the Task Intervals 

for Certain AWL Inspections 

KLM Royal Dutch Airlines, on behalf 

of several operators, requests that we 

review a 45-page proposal to align 

certain airworthiness limitation item 

(ALI) intervals with the applicable 

maintenance significant item (MSI) and 

enhanced zonal analysis procedure 

(EZAP) intervals for Model 737, 747, 

757, 767, and 777 airplanes. The 

recommendations in that proposal 

ensure that the ALI intervals align with 

the maintenance schedules of the 

operators. Among other changes, the 

proposal recommends extending certain 

AWL inspection intervals from 10 years/ 

36,000 flight cycles to 12 years for 

Model 757 airplanes. 

We disagree with KLM’s request to 

extend certain AWL inspection intervals 

to 12 years. However, as stated 

previously, we have deleted the 36,000- 

total-flight-cycle parameter from Table 1 

of this AD to correspond with the task 

intervals specified in Revision March 

2008 of the MPD. In developing an 

appropriate compliance time for this 

action, we considered the urgency 

associated with the subject unsafe 

condition and the practical aspect of 

accomplishing the required actions 

within a period of time that corresponds 

to the normal scheduled maintenance 

for most affected operators. However, 

according to the provisions of paragraph 

(l) of this AD, we might approve 

requests to adjust the compliance time 

if the request includes data that prove 

that the new compliance time would 

provide an acceptable level of safety. 

Request To Revise the Loop Resistance 

Values for AWL No. 28–AWL–03 

Boeing states that the loop resistance 

values for AWL No. 28–AWL–03 

specified in Revision March 2006 of the 

MPD are going to be revised, since those 

values are relevant for production 

airplanes. Boeing also states that the 

revised values will be more 

representative of the expected values for 

in-service airplanes. Boeing points out 

that, according to paragraph (h) of the 

supplemental NPRM, the revised values 

should be able to be used in accordance 

with a later revision of the MPD if the 

revision is approved by the Seattle 

Aircraft Certification Office (ACO), 

FAA. 

We agree that operators may use the 

revised loop resistance values for AWL 

No. 28–AWL–03 in accordance with 

Revision March 2008 of the MPD. As 

stated previously, we have revised this 

AD accordingly. 

Request To Revise Note 1 

Boeing requests that we revise Note 1 

of the supplemental NPRM to clarify the 

need for an AMOC. Boeing states that 

the current wording is difficult to 

follow, and that the note is meant to 

inform operators that an AMOC to the 

required MPD AWLs might be required 

if an operator has previously modified, 

altered, or repaired the areas addressed 

by the limitations. Boeing requests that 

we revise Note 1 as follows: 

• Add the words ‘‘according to 

paragraph (g)’’ at the end of the first 

sentence. 

• Replace the words ‘‘revision to’’

with ‘‘deviation from’’ in the last 

sentence. 

• Delete the words ‘‘(g) or’’ and ‘‘as 

applicable’’ from the last sentence. 

As stated previously, we have 

simplified the language in Note 1 of this 

AD for standardization with other 

similar ADs. The language the 

commenter requests that we change 

does not appear in the revised note. 

Therefore, no additional change to this 

AD is necessary in this regard. 

Conclusion 

We have carefully reviewed the 

available data, including 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 will neither increase the 

economic burden on any operator nor 

increase the scope of the AD. 

Costs of Compliance 

There are about 990 airplanes of the 

affected design in the worldwide fleet. 

The following table provides the 

estimated costs, at an average labor rate 

of $80 per work hour, for U.S. operators 

to comply with this AD. 


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25976 Federal Register / Vol. 73, No. 90 / Thursday, May 8, 2008 / Rules and Regulations 

ESTIMATED COSTS

Action Work 

hours 

Cost per 

airplane 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

AWLs revision .................................................................................................. 8 $640 639 $408,960 

Inspections ....................................................................................................... 8 640 639 408,960 

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 have determined that this AD will 

not have federalism implications under 

Executive Order 13132. This AD will 

not have a substantial direct effect on 

the States, on the relationship between 

the national government and the States, 

or on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify 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); and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

See the ADDRESSES section for a location 

to examine the regulatory evaluation. 

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 Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

2008–10–11 Boeing: Amendment 39–15517. 

Docket No. FAA–2006–26710; 

Directorate Identifier 2006–NM–147–AD. 

Effective Date 

(a) This AD becomes effective June 12, 

2008. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to all Boeing Model 

757–200, –200PF, –200CB, and –300 series 

airplanes, certificated in any category. 

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 (AMOC) 

according to paragraph (l) 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. 

Unsafe Condition 

(d) This AD results from a design review 

of the fuel tank systems. We are issuing this 

AD to prevent the potential for ignition 

sources inside fuel tanks caused by latent 

failures, alterations, repairs, or maintenance 

actions, which, in combination with 

flammable fuel vapors, could result in a fuel 

tank explosion and consequent loss of the 

airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Service Information 

(f) The term ‘‘Revision March 2008 of the 

MPD’’ as used in this AD, means Boeing 

Temporary Revision (TR) 09–008, dated 

March 2008. Boeing TR 09–008 is published 

as Section 9 of the Boeing 757 Maintenance 

Planning Document (MPD) Document, 

D622N001–9, Revision March 2008. 

Revision of Airworthiness Limitations 

(AWLs) Section 

(g) Before December 16, 2008, revise the 

AWLs section of the Instructions for 

Continued Airworthiness (ICA) by 

incorporating the information in the 

subsections specified in paragraphs (g)(1) 

through (g)(3) of this AD into the MPD; 

except that the initial inspections specified 

in Table 1 of this AD must be done at the 

compliance times specified in Table 1. 

Accomplishing the revision in accordance 

with a later revision of the MPD is an 

acceptable method of compliance if the 

revision is approved by the Manager, Seattle 

Aircraft Certification Office (ACO), FAA. 

(1) Subsection E, ‘‘AIRWORTHINESS 

LIMITATIONS—FUEL SYSTEMS,’’ of 

Revision March 2008 of the MPD. 

(2) Subsection F, ‘‘PAGE FORMAT: 

SYSTEMS AIRWORTHINESS 

LIMITATIONS,’’ of Revision March 2008 of 

the MPD. 

(3) Subsection G, ‘‘AIRWORTHINESS 

LIMITATIONS—FUEL SYSTEM AWLs,’’

AWLs No. 28–AWL–01 through No. 28–

AWL–24 inclusive, of Revision March 2008 

of the MPD. As an optional action, AWLs No. 

28-AWL–25 and No. 28-AWL–26, as 

identified in Subsection G of Revision March 

2008 of the MPD, also may be incorporated 

into the AWLs section of the ICA. 

Initial Inspections and Repair 

(h) Do the inspections specified in Table 1 

of this AD at the compliance time specified 

in Table 1 of this AD, and repair any 

discrepancy, in accordance with Section G of 

Revision March 2008 of the MPD. The repair 

must be done before further flight. 

Accomplishing the actions in accordance 

with a later revision of the MPD is an 

acceptable method of compliance if the 

revision is approved by the Manager, Seattle 

ACO. Accomplishing the inspections 

identified in Table 1 of this AD as part of an 

FAA-approved maintenance program before 

the applicable compliance time specified in 

Table 1 of this AD constitutes compliance 

with the requirements of this paragraph. 


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Federal Register / Vol. 73, No. 90 / Thursday, May 8, 2008 / Rules and Regulations 25977 

TABLE 1.—INITIAL INSPECTIONS

AWL No. Description 

Compliance time 

(whichever occurs later) 

Threshold Grace period 

(1) 28–AWL–01 .............................. A detailed inspection of external 

wires over the center fuel tank 

for damaged clamps, wire chafing, and wire bundles in contact 

with the surface of the center 

fuel tank.

Within 120 months since the date 

of issuance of the original 

standard airworthiness certificate or the date of issuance of 

the original export certificate of 

airworthiness.

Within 72 months after the effective date of this AD. 

(2) 28–AWL–03 .............................. A special detailed inspection of 

the lightning shield to ground 

termination on the out-of-tank 

fuel quantity indicating system 

to verify functional integrity.

Within 120 months since the date 

of issuance of the original 

standard airworthiness certificate or the date of issuance of 

the original export certificate of 

airworthiness.

Within 24 months after the effective date of this AD. 

(3) 28–AWL–14 .............................. A special detailed inspection of 

the fault current bond of the 

fueling shutoff valve actuator of 

the center wing tank to verify 

electrical bond.

Within 120 months since the date 

of issuance of the original 

standard airworthiness certificate or the date of issuance of 

the original export certificate of 

airworthiness.

Within 60 months after the effective date of this AD. 

Note 2: For the purposes of this AD, a 

detailed inspection is: ‘‘An intensive 

examination of a specific item, installation, 

or assembly to detect damage, failure, or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at an intensity deemed appropriate. 

Inspection aids such as mirror, magnifying 

lenses, etc., may be necessary. Surface 

cleaning and elaborate procedures may be 

required.’’

Note 3: For the purposes of this AD, a 

special detailed inspection is: ‘‘An intensive 

examination of a specific item, installation, 

or assembly to detect damage, failure, or 

irregularity. The examination is likely to 

make extensive use of specialized inspection 

techniques and/or equipment. Intricate 

cleaning and substantial access or 

disassembly procedure may be required.’’

No Alternative Inspections, Inspection 

Intervals, or Critical Design Configuration 

Control Limitations (CDCCLs) 

(i) After accomplishing the actions 

specified in paragraphs (g) and (h) of this AD, 

no alternative inspections, inspection 

intervals, or CDCCLs may be used unless the 

inspections, intervals, or CDCCLs are part of 

a later revision of ‘‘Revision March 2008 of 

the MPD’’ that is approved by the Manager, 

Seattle ACO; or unless the inspections, 

intervals, or CDCCLs are approved as an 

AMOC in accordance with the procedures 

specified in paragraph (l) of this AD. 

Credit for Actions Done According to 

Previous Revisions of the MPD 

(j) Actions done before the effective date of 

this AD in accordance with Section 9 of the 

Boeing 757 MPD Document, D622N001–9, 

Revision March 2006; Revision October 2006; 

Revision January 2007; or Revision 

November 2007; are acceptable for 

compliance with the corresponding 

requirements of paragraphs (g) and (h) of this 

AD. 

Terminating Action for AD 2008–06–03, 

Amendment 39–15415 

(k) Incorporating AWLs No. 28–AWL–23, 

No. 28–AWL–24, and No. 28–AWL–25 into 

the AWLs section of the ICA in accordance 

with paragraph (g) of this AD terminates the 

action required by paragraph (h)(2) of AD 

2008–06–03. 

Alternative Methods of Compliance 

(AMOCs) 

(l)(1) The Manager, Seattle ACO, has the 

authority to approve AMOCs for this AD, if 

requested in accordance with the procedures 

found in 14 CFR 39.19. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

Material Incorporated by Reference 

(m) You must use Boeing Temporary 

Revision (TR) 09–008, dated March 2008, to 

the Boeing 757 Maintenance Planning 

Document (MPD) Document, D622N001–9, to 

perform the actions that are required by this 

AD, unless the AD specifies otherwise. 

Boeing TR 09–008 is published as Section 9 

of the Boeing 757 Maintenance Planning 

Document (MPD) Document, D622N001–9, 

Revision March 2008. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this document in accordance with 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) Contact Boeing Commercial Airplanes, 

P.O. Box 3707, Seattle, Washington 98124–

2207, for a copy of this service information. 

(3) You may review copies at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue SW., Renton, Washington; or at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on April 29, 

2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–9917 Filed 5–7–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–28385; Directorate 

Identifier 2006–NM–181–AD; Amendment 

39–15513; AD 2008–10–07] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 747–100, 747–100B, 747–100B 

SUD, 747–200B, 747–200C, 747–200F, 

747–300, 747SR, and 747SP Series 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for all 

Boeing Model 747–100, 747–100B, 747–

100B SUD, 747–200B, 747–200C, 747–

200F, 747–300, 747SR, and 747SP series 

airplanes. This AD requires revising the 

FAA-approved maintenance program by 

incorporating new airworthiness 

limitations (AWLs) for fuel tank systems 

to satisfy Special Federal Aviation 

Regulation No. 88 requirements. This 

AD also requires the initial inspection of 


pwalker on PROD1PC71 with RULES