Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-300, 747SP, and 747SR Series Airplanes

[Federal Register Volume 70, Number 196 (Wednesday, October 12, 2005)]
[Rules and Regulations]
[Pages 59252-59256]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-20072]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-20880; Directorate Identifier 2003-NM-229-AD; 
Amendment 39-14327; AD 2005-20-30]
RIN 2120-AA64


Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-
100B SUD, 747-200B, 747-300, 747SP, and 747SR Series Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: The FAA is superseding an existing airworthiness directive 
(AD), which applies to certain Boeing Model 747 series airplanes. That 
AD currently requires repetitive inspections to detect cracks in 
various areas of the fuselage internal structure, and repair if 
necessary. This new AD requires repetitive inspections of additional 
areas of the fuselage internal structure, and related investigative/
corrective actions if necessary. This new AD also removes certain 
requirements from the existing AD. This AD results from fatigue testing 
of the fuselage structure of a Boeing Model 747SR series airplane. We 
are issuing this AD to prevent the loss of the structural integrity of 
the fuselage, which could result in rapid depressurization of the 
airplane.

DATES: Effective November 16, 2005.
    The Director of the Federal Register approved the incorporation by 
reference of Boeing Service Bulletin 747-53A2349, Revision 2, dated 
April 3, 2003, as of November 16, 2005.
    On June 27, 2002 (67 FR 36081, May 23, 2002), the Director of the 
Federal Register approved the incorporation by reference of Boeing 
Alert Service Bulletin 747-53A2349, Revision 1, dated October 12, 2000.
    On June 11, 1993 (58 FR 27927, May 12, 1993), the Director of the 
Federal Register approved the incorporation by reference of Boeing 
Service Bulletin 747-53-2349, dated June 27, 1991.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street SW., Nassif Building, 
room PL-401, Washington, DC.
    Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, 
Washington 98124-2207, for service information identified in this AD.

FOR FURTHER INFORMATION CONTACT: Ivan Li, Aerospace Engineer, Airframe 
Branch, ANM-120S, FAA, Seattle Aircraft Certification Office, 1601 Lind 
Avenue, SW., Renton, Washington 98055-4056; telephone (425) 917-6437; 
fax (425) 917-6590.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the AD docket on the Internet at http://dms.dot.gov 
or in person at the Docket Management Facility office between 9 a.m. 
and 5 p.m., Monday through Friday, except Federal holidays. The Docket 
Management Facility office (telephone (800) 647-5227) is located on the 
plaza level of the Nassif Building at the street address stated in the 
ADDRESSES section.

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to include an AD that supersedes AD 2002-10-10, amendment 
39-12756 (67 FR 36081, May 23, 2002). The existing AD applies to 
certain Boeing Model 747 series airplanes. That NPRM was published in 
the Federal Register on April 11, 2005 (70 FR

[[Page 59253]]

18332). That NPRM proposed to require repetitive inspections to detect 
cracks in various areas of the fuselage internal structure, and related 
investigative/corrective actions if necessary.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments that have been 
received on the NPRM.

Request To Clarify Paragraph (b) of the NPRM

    One commenter, the manufacturer, requests that paragraph (b) of the 
NPRM be revised to indicate that the NPRM does not address the upper 
deck floor beams, one subject of AD 2002-10-10. The commenter suggests 
that paragraph (b) be revised to read, ``This AD supersedes AD 2002-10-
10, amendment 39-12756 (67 FR 36081, May 23, 2002), except AD 2002-10-
10, paragraphs (a)(1), (d), (e), and (g), are not addressed by this 
AD.''
    We do not agree. In the ``Other Related Rulemaking'' section of the 
NPRM, we clarified that all requirements from AD 2002-10-10 related to 
the upper deck floor beams are included in a separate rulemaking 
action. Consequently, on April 1, 2005, we issued an NPRM, Docket No. 
FAA-2005-20879, to propose to address cracking in the upper chords of 
the upper deck floor beams. That NPRM was published in the Federal 
Register on April 11, 2005 (70 FR 18327). We have not revised the final 
rule in this regard.

Request To Revise Paragraph (i) of the NPRM

    The same commenter requests that paragraph (i) of the NPRM be 
revised to indicate that the inspection for the areas specified in 
paragraph (i)(5) of the NPRM consists of internal and external detailed 
inspections. The commenter notes that the revision should be made to 
agree with Boeing Service Bulletin 747-53A2349, Revision 2, dated April 
3, 2003 (which is referenced as the appropriate source of service 
information for accomplishing the proposed actions).
    We agree with the commenter. The inspections of the nose wheel well 
bulkheads and floor beams specified in paragraph (i)(5) of the final 
rule are internal and external inspections. We have revised paragraph 
(i) of the final rule accordingly.

Request To Move Grace Period From Paragraph (j)(2) to Paragraph (j)(1)

    The same commenter requests that the grace period ``within 1,000 
flight cycles after the effective date of this AD,'' be removed from 
the compliance time in paragraph (j)(2) of the NPRM and be added to the 
compliance time in paragraph (j)(1) of the NPRM. The commenter believes 
moving the grace period will convey the true intent of the service 
bulletin. The commenter states that the grace period can be removed 
from paragraph (j)(2) because the paragraph applies to operators that 
have already performed the inspections specified in paragraphs (i)(5) 
and (i)(7) of the NPRM. The commenter explains that these operators 
therefore are using Revision 2 of the service bulletin and would 
continue the inspections at the 3,000-flight-cycle repetitive interval.
    We partially agree with the commenter. We agree with the commenter 
that the grace period ``within 1,000 flight cycles after the effective 
date of this AD'' should be added to the compliance time in paragraph 
(j)(1) of the final rule and have revised paragraph (j)(1) accordingly. 
We find that the grace period will keep airplanes from being grounded 
unnecessarily and will provide an acceptable level of safety. However, 
we do not agree to remove the grace period from paragraph (j)(2) of the 
final rule. Operators that have voluntarily accomplished the 
inspections specified in paragraphs (i)(5) and (i)(7) of the final rule 
before the effective date of the final rule should be given the same 
grace period for the new inspections as operators that have not done 
the inspections specified in paragraphs (i)(5) and (i)(7). We also note 
that this grace period is for the new inspections specified in 
paragraphs (i)(5) and (i)(7) and that operators are still required to 
do the inspections specified in paragraph (f) of the final rule at 
intervals not to exceed 3,000 flight cycles until all the inspections 
required by paragraph (i) of the final rule are done.

Request To Revise Compliance Time in Paragraph (j)(3)

    The same commenter requests that the compliance time specified in 
paragraph (j)(3) of the NPRM be revised to clarify that the grace 
period is limited to the ``new work'' specified in paragraphs (i)(5) 
and (i)(7) of the NPRM. The commenter states that the existing 
compliance time would allow deferral of all the inspections until 
23,000 total flight cycles. The commenter recommends that the 
compliance time read as follows: ``Accomplish the inspections required 
by paragraphs (i)(1), (i)(2), (i)(3), (i)(4), (f)(5), and (i)(6) of 
this AD prior to the accumulation of 22,000 flight cycles. Accomplish 
the inspections required by paragraphs (i)(5) and (i)(7) of this AD 
prior to the accumulation of 22,000 flight cycles, or within 1,000 
flight cycles after the effective date of this AD, whichever is 
later.''
    We acknowledge that the only new inspections required by the final 
rule are the inspections specified in paragraphs (i)(5) and (i)(7) of 
the final rule. However, we do not agree that the compliance time 
specified in paragraph (j)(3) of the final rule allows for deferral of 
the other inspections specified in paragraph (i) of the final rule. 
Although an operator may delay doing the inspections specified in 
paragraphs (i)(1), (i)(2), (i)(3), (i)(4), and (i)(6) of the final rule 
until the end of the grace period, the operator is still required to do 
the equivalent inspections specified in paragraph (f) of the final 
rule. Thus the existing inspections required by paragraph (f) of the 
final rule must be done at the compliance times specified in paragraph 
(f) until all the inspections required by paragraph (i) are done. We 
have not changed the final rule in this regard.

Request To Clarify Repair Reference

    The same commenter requests that paragraphs (h) and (k) of the NPRM 
be revised to clarify that the Boeing Structural Repair Manuals (SRMs) 
meet the intent of the NPRM for repairs. The commenter contends that 
the SRMs contain the appropriate repairs and are referenced in Boeing 
Service Bulletin 747-53-2349. The commenter believes that the phrase 
``For a repair method to be approved, the approval must specifically 
reference this AD'' in the second part of paragraph (k) should apply 
only to the second part of the paragraph that says to ``contact 
Boeing.'' The commenter notes that some operators may have already done 
the repair per the SRM and suggests it would be best to state that the 
SRMs meet the intent of the AD.
    We partially agree with the commenter. We agree with the commenter 
that the SRM procedures referenced in the service bulletin are an 
appropriate source of service information for doing the repairs 
required by the final rule. We have revised paragraph (h) of the final 
rule to allow operators to do repairs in accordance with Boeing Service 
Bulletin 747-53A2349, Revision 2, as specified in paragraph (k) of the 
final rule.

[[Page 59254]]

    However, we do not agree to revise paragraph (k) of the final rule 
to state that the SRM meets the intent of the final rule because 
paragraph (k) specifies to do the repair in accordance with Boeing 
Service Bulletin 747-53A2349, Revision 2, which references the SRM. 
Therefore, operators that do the repair in accordance with the 
applicable SRM referenced in the service bulletin meet the repair 
requirement of the final rule and do not need further FAA approval. 
Paragraph (k) of the final rule specifies to repair in accordance with 
FAA approval only where the service bulletin specifies to contact 
Boeing for repair. Thus, operators are required to obtain FAA approval 
only for repairs that are beyond the scope of the service bulletin or 
SRM. As the commenter noted, the phrase, ``For a repair method to be 
approved, the approval must specifically reference this AD,'' applies 
only to operators that are required to obtain FAA approval. We have not 
revised the final rule in this regard.

Request To Include Effect of AD 2004-07-22 on the NPRM

    Two commenters request that the NPRM include the effect of AD 2004-
07-22, amendment 39-13566 (69 FR 18250, April 7, 2004), which mandates 
Boeing Document No. D6-35022, ``Supplemental Structural Inspection 
Document,'' (SSID) for Model 747 Airplanes, Revision G, dated December 
2000. One commenter states that it has done the SSID inspections 
required by AD 2004-07-22 and that the NPRM may include inspections 
already covered by the SSID inspections. The commenter suggests that, 
to prevent duplicate work, the NPRM should identify the paragraphs for 
which SSID inspections are acceptable as an alternative method of 
compliance (AMOC). The other commenter, the manufacturer, notes that 
the SSID includes statements that allow the use of Boeing Service 
Bulletin 747-53-2349 inspections in lieu of SSID inspections. The 
commenter notes that, because of the NPRM, there will be a requirement 
to perform the SSID inspections and the Boeing Service Bulletin 747-53-
2349 inspections without an allowance to use the service bulletin 
inspections as a substitute for the SSID inspections. The commenter 
contends that it is better to have an operator use the service bulletin 
inspections due to the improved level of detailed instructions.
    We acknowledge that certain inspections done in accordance with 
Boeing Service Bulletin 747-53-2349 may be acceptable as a substitute 
for corresponding SSID inspections and vice versa, because inspections 
done in accordance with both documents cover common areas. However, 
operators must identify the inspections and substantiate that any 
substitutions would provide an acceptable level of safety, and we must 
approve any substitutions. In order to avoid further delay to the 
inspections required by this final rule, we have not revised the final 
rule in this regard. Operators may request approval for AMOCs according 
to paragraph (m) of this final rule. For AD 2004-07-22, operators may 
request approval for AMOCs according to paragraph (g) of that AD.

Explanation of Change Made to This Final Rule

    We have simplified paragraphs (h)(1), (h)(2), and (k) of this AD by 
referring to the ``Alternative Methods of Compliance (AMOCs)'' 
paragraph (m) of this final rule for repair methods.

Clarification of AMOC Paragraph

    We have revised this final rule to clarify the appropriate 
procedure for notifying the principal inspector before using any 
approved AMOC on any airplane to which the AMOC applies.

Conclusion

    We have carefully reviewed the available data, including the 
comments that have been 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

    This AD will affect about 489 airplanes worldwide, and 155 
airplanes of U.S. registry. The following table provides the estimated 
costs for U.S. operators to comply with this AD.

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                              Cost per
                                                  Average                     airplane,   Number of
                 Action                   Work     labor         Parts           per        U.S.-     Fleet cost
                                          hours  rate per                    inspection  registered
                                                   hour                         cycle     airplanes
----------------------------------------------------------------------------------------------------------------
Inspections, excluding upper deck floor     145       $65  None............      $9,425         155   $1,460,875
 beams, per inspection cycle (required
 by AD 2002-10-10).
Inspections (new AD)...................     130        65  None............       8,450         155    1,309,750
----------------------------------------------------------------------------------------------------------------

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

[[Page 59255]]

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

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13  [Amended]

0
2. The Federal Aviation Administration (FAA) amends Sec.  39.13 by 
removing amendment 39-12756 (67 FR 36081, May 23, 2002) and by adding 
the following new airworthiness directive (AD):

2005-20-30 Boeing: Amendment 39-14327. Docket No. FAA-2005-20880; 
Directorate Identifier 2003-NM-229-AD.

Effective Date

    (a) This AD becomes effective November 16, 2005.

Affected ADs

    (b) This AD supersedes AD 2002-10-10.

Applicability

    (c) This AD applies to Boeing Model 747-100, 747-100B, 747-100B 
SUD, 747-200B, 747-300, 747SP, and 747SR series airplanes; 
certificated in any category; identified in Boeing Service Bulletin 
747-53A2349, Revision 2, dated April 3, 2003.

Unsafe Condition

    (d) This AD was prompted by the results of fatigue testing of 
the fuselage structure of a Boeing Model 747SR series airplane. We 
are issuing this AD to prevent the loss of the structural integrity 
of the fuselage, which could result in rapid depressurization 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.

Restatement of Requirements of AD 2002-10-10 (Excluding Upper Deck 
Floor Beams)

Repetitive Inspections

    (f) Prior to the accumulation of 22,000 total flight cycles, or 
within 1,000 flight cycles after June 11, 1993 (the effective date 
of AD 93-08-12, amendment 39-8559), whichever occurs later, unless 
accomplished previously within the last 2,000 flight cycles; and 
thereafter at intervals not to exceed 3,000 flight cycles: Perform 
an internal detailed inspection to detect cracks in the areas of the 
fuselage internal structure specified in paragraphs (f)(1) through 
(f)(6) of this AD; in accordance with Boeing Service Bulletin 747-
53-2349, dated June 27, 1991; Boeing Alert Service Bulletin 747-
53A2349, Revision 1, dated October 12, 2000; or Boeing Service 
Bulletin 747-53A2349, Revision 2, dated April 3, 2003. After the 
effective date of this AD, only Revision 2 of Boeing Service 
Bulletin 747-53A2349 may be used. Continue doing the inspections 
until the inspections required by paragraph (i) of this AD are done.
    (1) Section 42 upper lobe frames.
    (2) Section 46 lower lobe frames.
    (3) Section 42 lower lobe frames.
    (4) Main entry door cutouts.
    (5) Section 41 body station 260, 340, and 400 bulkheads.
    (6) Main entry doors.

    Note 1: 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.''

    (g) Prior to the accumulation of 25,000 total flight cycles, or 
within 1,000 flight cycles after June 11, 1993, whichever is later, 
unless already done within the last 2,000 flight cycles; and 
thereafter at intervals not to exceed 3,000 flight cycles: Do an 
internal detailed inspection to detect cracks in the Section 46 
upper lobe frames, in accordance with Boeing Service Bulletin 747-
53-2349, dated June 27, 1991; Boeing Alert Service Bulletin 747-
53A2349, Revision 1, dated October 12, 2000; or Boeing Service 
Bulletin 747-53A2349, Revision 2, dated April 3, 2003. After the 
effective date of this AD, only Revision 2 of Boeing Service 
Bulletin 747-53A2349 may be used.

Repair of Cracks Detected During Paragraph (f) or (g) Inspections

    (h) Before further flight, repair any cracks detected during the 
inspections done per paragraph (f) or (g) of this AD by doing the 
actions specified in paragraph (h)(1) or (h)(2) of this AD, as 
applicable.
    (1) Repair in accordance with a method approved by the Manager, 
Seattle Aircraft Certification Office (ACO), FAA; or using a method 
approved in accordance with paragraph (m) of this AD.
    (2) Repair in accordance with Boeing Service Bulletin 747-
53A2349, Revision 2, dated April 3, 2003. Where the service bulletin 
specifies to contact Boeing for repair instructions, repair in 
accordance with a method approved by the Manager, Seattle ACO; or 
using a method approved in accordance with paragraph (m) of this AD.

New Requirements of This AD

Repetitive Inspections

    (i) Do an internal detailed inspection to detect cracking in the 
areas of the fuselage internal structure specified in paragraphs 
(i)(1), (i)(2), and (i)(3) of this AD, and internal and external 
detailed inspections of the areas specified in paragraphs (i)(4), 
(i)(5), (i)(6), and (i)(7) of this AD. Do the inspections in 
accordance with Boeing Service Bulletin 747-53A2349, Revision 2, 
dated April 3, 2003. Do the inspections at the applicable time 
specified in paragraph (j) of this AD. Accomplishment of these 
inspections terminates the requirements of paragraph (f) of this AD.
    (1) Section 42 upper lobe frames.
    (2) Section 46 lower lobe frames.
    (3) Section 42 lower lobe frames.
    (4) Main entry door cutouts.
    (5) Nose wheel well bulkheads, sidewall panels, and the STA 360 
and 380 floor beams. These areas include the Section 41 body station 
260, 340, and 400 bulkheads.
    (6) Main entry doors.
    (7) Main electronics bay access door cutout.
    (j) Do the inspections required by paragraph (i) of this AD at 
the applicable time specified in paragraph (j)(1), (j)(2), or (j)(3) 
of this AD. Repeat the inspections thereafter at intervals not to 
exceed 3,000 flight cycles.
    (1) For airplanes on which the inspections required by 
paragraphs (f)(1), (f)(2), (f)(3), (f)(4), and (f)(6) of this AD 
have been done before the effective date of this AD, but the 
inspections required by paragraphs (i)(5) and (i)(7) of this AD have 
not been done: Within 3,000 flight cycles since accomplishment of 
the most recent inspection required by paragraphs (f)(1), (f)(2), 
(f)(3), (f)(4), and (f)(6) of this AD, except the inspections 
specified in paragraphs (i)(5) and (i)(7) of this AD may be done 
within 3,000 flight cycles since accomplishment of the most recent 
inspection required by paragraphs (f)(1), (f)(2), (f)(3), (f)(4), 
and (f)(6) of this AD, or within 1,000 flight cycles after the 
effective date of this AD, whichever is later.
    (2) For airplanes on which the inspections required by 
paragraphs (i)(5) and (i)(7) have been done before the effective 
date of this AD: Within 3,000 flight cycles since accomplishment of 
the most recent inspection required by paragraphs (i)(5) and (i)(7) 
of this AD, or within 1,000 flight cycles after the effective date 
of this AD, whichever is later.
    (3) For airplanes on which the inspections required by paragraph 
(f) of this AD have not been done before the effective date of this 
AD: Prior to the accumulation of 22,000 total flight cycles, or 
within 1,000 flight cycles after the effective date of this AD, 
whichever is later.

Repair of Cracks Detected During Paragraph (i) Inspection

    (k) Before further flight, repair any cracking found during any 
inspection required by paragraph (i) of this AD in accordance with 
Boeing Service Bulletin 747-53A2349, Revision 2, dated April 3, 
2003. Where the service bulletin specifies to contact Boeing for 
repair instructions, repair in accordance with a method approved by 
the Manager, Seattle ACO; or using a method approved in accordance 
with paragraph (m) of this AD.

[[Page 59256]]

Actions Previously Accomplished

    (l) Inspections required by paragraph (i) of this AD, 
accomplished before the effective date of this AD, in accordance 
with the Accomplishment Instructions of Boeing Service Bulletin 747-
53-2349, dated June 27, 1991; or Boeing Alert Service Bulletin 747-
53A2349, Revision 1, dated October 12, 2000; are acceptable for 
compliance with the corresponding action required by paragraph (i) 
of this AD.

Alternative Methods of Compliance (AMOCs)

    (m)(1) The Manager, Seattle ACO, FAA, has the authority to 
approve AMOCs for this AD, if requested using the procedures found 
in 14 CFR 39.19.
    (2) Before using any AMOC approved in accordance with 14 CFR 
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair required by this AD, if it is approved by an 
Authorized Representative for the Boeing Commercial Airplanes 
Delegation Option Authorization Organization who has been authorized 
by the Manager, Seattle ACO, to make those findings. For a repair 
method to be approved, the repair must meet the certification basis 
of the airplane, and the approval must specifically refer to this 
AD.
    (4) Alternative methods of compliance and FAA-approved repairs, 
approved previously in accordance with AD 2002-10-10 or AD 93-08-12, 
are approved as alternative methods of compliance with the 
corresponding requirements of this AD.

Material Incorporated by Reference

    (n) You must use Boeing Service Bulletin 747-53-2349, dated June 
27, 1991; Boeing Alert Service Bulletin 747-53A2349, Revision 1, 
dated October 12, 2000; or Boeing Service Bulletin 747-53A2349, 
Revision 2, dated April 3, 2003; to perform the actions that are 
required by this AD, unless the AD specifies otherwise.
    (1) The Director of the Federal Register approves the 
incorporation by reference of Boeing Service Bulletin 747-53A2349, 
Revision 2, dated April 3, 2003, in accordance with 5 U.S.C. 552(a) 
and 1 CFR part 51.
    (2) The Director of the Federal Register previously approved the 
incorporation by reference of Boeing Alert Service Bulletin 747-
53A2349, Revision 1, dated October 12, 2000, as of June 27, 2002 (67 
FR 36081, May 23, 2002).
    (3) The Director of the Federal Register previously approved the 
incorporation by reference of Boeing Service Bulletin 747-53-2349, 
dated June 27, 1991, as of June 11, 1993 (58 FR 27927, May 12, 
1993).
    (4) To get copies of the service information, contact Boeing 
Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. 
You may review copies at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street SW., room PL-401, 
Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration 
(NARA). For information on the availability of this material at the 
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 September 26, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-20072 Filed 10-11-05; 8:45 am]
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