Airworthiness Directives; Boeing Model 747-400 and 747-400D Series Airplanes, 46072-46074 [05-15586]
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46072
Federal Register / Vol. 70, No. 152 / Tuesday, August 9, 2005 / Rules and Regulations
(1) The Director of the Federal Register
approved the incorporation by reference of
Bombardier Service Bulletin SB 23/24/25–
28–7, Revision 2, dated May 9, 2001; and
Bombardier Service Bulletin SB 35/36–28–
14, Revision 2, dated May 9, 2001; in
accordance with 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) On December 27, 1995 (60 FR 63617,
December 12, 1995), the Director of the
Federal Register approved the incorporation
by reference of Learjet Service Bulletin SB
23/24/25–28–2, dated October 6, 1995; and
Learjet Service Bulletin SB 35/36–28–10,
dated October 6, 1995.
(3) Contact Learjet, Inc., One Learjet Way,
Wichita, Kansas 67209–2942, for a copy of
this service information. 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
https://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 https://www.archives.gov/
federal_register/code_of_federal_regulations/
ibr_locations.html.
TABLE 2.—MATERIAL INCORPORATED BY REFERENCE
Service bulletin
Revision level
Bombardier Service Bulletin SB 23/24/25–28–7 .................................................................................
Bombardier Service Bulletin SB 35/36–28–14 ....................................................................................
Learjet Service Bulletin SB 23/24/25–28–2 ........................................................................................
Learjet Service Bulletin SB 35/36–28–10 ...........................................................................................
2 ...............................
2 ...............................
Original ....................
Original ....................
Issued in Renton, Washington, on July 29,
2005.
Kevin M. Mullin,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. 05–15585 Filed 8–8–05; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2005–21088; Directorate
Identifier 2004–NM–267–AD; Amendment
39–14215; AD 2005–16–10]
RIN 2120–AA64
Airworthiness Directives; Boeing
Model 747–400 and 747–400D Series
Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
SUMMARY: The FAA is adopting a new
airworthiness directive (AD) for certain
Boeing Model 747–400 and 747–400D
series airplanes. This AD requires an
inspection for corrosion and cracks of
the station 980 upper deck floor beam,
and repair and related investigative
actions if necessary. This AD results
from reports of corrosion under the cart
lift threshold at the station 980 upper
deck floor beam. We are issuing this AD
to detect and correct such corrosion,
which could result in a cracked or
broken floor beam, extensive damage to
adjacent structure, and possible rapid
decompression of the airplane.
DATES: Effective September 13, 2005.
The Director of the Federal Register
approved the incorporation by reference
VerDate jul<14>2003
15:06 Aug 08, 2005
Jkt 205001
of a certain publication listed in the AD
as of September 13, 2005.
ADDRESSES: You may examine the AD
docket on the Internet at https://
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 https://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 would
apply to certain Boeing Model 747–400
and 747–400D series airplanes. That
NPRM was published in the Federal
Register on May 3, 2005 (70 FR 22826).
That NPRM proposed to require an
inspection for corrosion and cracks of
the station 980 upper deck floor beam,
and repair and related investigative
actions if necessary.
PO 00000
Frm 00008
Fmt 4700
Sfmt 4700
Date
May 9, 2001.
May 9, 2001.
October 6, 1995.
October 6, 1995.
Comments
We provided the public the
opportunity to participate in the
development of this AD. We have
considered the comment that has been
received on the NPRM.
Support for the Proposed AD
The commenter supports the NPRM.
Explanation of Change to Paragraph
(f)(2)
We have revised paragraph (f)(2) of
this AD to correct a typographical error
that resulted in an incorrect paragraph
reference.
Clarification of Alternative Methods of
Compliance (AMOCs)
We have revised paragraph (h)(2) of
this AD to clarify the AMOC
requirements.
Clarification of Compliance Time
We have made a minor editorial
change to clarify the compliance time in
paragraph (f)(1) of this AD.
Conclusion
We have carefully reviewed the
available data, including the comment
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 363 airplanes of the
affected design in the worldwide fleet.
The following table provides the
estimated costs for U.S. operators to
comply with this AD.
E:\FR\FM\09AUR1.SGM
09AUR1
Federal Register / Vol. 70, No. 152 / Tuesday, August 9, 2005 / Rules and Regulations
46073
ESTIMATED COSTS
Action
Work
hours
Average
labor rate
per hour
Parts
Cost per
airplane
Number of
U.S.-registered airplanes
Fleet cost
Inspection ............................................................................
3
$65
None required .....
$195
46
$8,970
Adoption of the Amendment
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
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
15:06 Aug 08, 2005
Repair
Affected ADs
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.
VerDate jul<14>2003
floor beam, in accordance with Boeing
Alert Service Bulletin 747–53A2503,
I Accordingly, under the authority
dated November 11, 2004.
delegated to me by the Administrator,
(1) Inspect within 120 months since
the FAA amends 14 CFR part 39 as
the date of issuance of the original
follows:
standard Airworthiness Certificate or
the date of issuance of the original
PART 39—AIRWORTHINESS
Export Certificate of Airworthiness; or
DIRECTIVES
(2) Inspect at the time specified in
I 1. The authority citation for part 39
paragraph (f)(2)(i), (f)(2)(ii), or (f)(2)(iii)
continues to read as follows:
of this AD for the applicable airplane
group as identified in the service
Authority: 49 U.S.C. 106(g), 40113, 44701.
bulletin.
§ 39.13 [Amended]
(i) For Group 1 airplanes: Within 18
months after the effective date of this
I 2. The Federal Aviation
Administration (FAA) amends § 39.13 by AD.
(ii) For Group 2 airplanes: Within 36
adding the following new airworthiness
months after the effective date of this
directive (AD):
AD.
2005–16–10 Boeing: Amendment 39–14215.
(iii) For Group 3 airplanes: Within
Docket No. FAA–2005–21088;
120 months after the airplane has been
Directorate Identifier 2004–NM–267–AD.
modified in accordance with Boeing
Effective Date
Service Bulletin 747–25–3107, or within
36 months after the effective date of this
(a) This AD becomes effective
AD, whichever occurs later.
September 13, 2005.
Jkt 205001
(b) None.
Applicability
(c) This AD applies to Boeing Model
747–400 and 747–400D series airplanes,
certificated in any category, as listed in
Boeing Alert Service Bulletin 747–
53A2503, dated November 11, 2004.
Unsafe Condition
(d) This AD was prompted by reports
of corrosion under the cart lift threshold
at the station 980 upper deck floor
beam. We are issuing this AD to detect
and correct such corrosion, which could
result in a cracked or broken floor beam,
extensive damage to adjacent structure,
and possible rapid decompression 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.
Inspection
(f) At the later of the times specified
in paragraphs (f)(1) and (f)(2) of this AD:
Do a detailed inspection for corrosion
and cracks of the station 980 upper deck
PO 00000
Frm 00009
Fmt 4700
Sfmt 4700
(g) If any cracking or corrosion is
found during any inspection required by
this AD, do all related investigative and
corrective actions before further flight,
in accordance with Boeing Alert Service
Bulletin 747–53A2503, dated November
11, 2004. If the service bulletin specifies
to contact Boeing for appropriate action,
repair before further flight according to
a method approved by the Manager,
Seattle Aircraft Certification Office
(ACO), FAA; or according to data
meeting the certification basis of the
airplane approved by an Authorized
Representative for the Boeing Delegation
Option Authorization (DOA)
Organization who has been authorized
by the Manager, Seattle ACO, to make
those findings. For a repair method to be
approved, the approval must
specifically reference this AD.
Alternative Methods of Compliance
(AMOCs)
(h)(1) The Manager, Seattle ACO,
FAA, has the authority to approve
AMOCs for this AD, if requested in
accordance with the procedures found
in 14 CFR 39.19.
(2) An AMOC that provides an
acceptable level of safety may be used
for any repair required by this AD, if it
E:\FR\FM\09AUR1.SGM
09AUR1
46074
Federal Register / Vol. 70, No. 152 / Tuesday, August 9, 2005 / Rules and Regulations
is approved by an Authorized
Representative for the Boeing DOA
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.
Material Incorporated by Reference
(i) You must use Boeing Alert Service
Bulletin 747–53A2503, dated November
11, 2004, to perform the actions that are
required by this AD, unless the AD
specifies otherwise. 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. Contact
Boeing Commercial Airplanes, P.O. Box
3707, Seattle, Washington 98124–2207,
for a copy of this service information.
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
https://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
https://www.archives.gov/
federal_register/code_of_
federal_regulations/ibr_locations.html.
Issued in Renton, Washington, on July 29,
2005.
Kevin M. Mullin,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. 05–15586 Filed 8–8–05; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
and corrective actions if necessary. This
AD results from reports of
contamination of the fueling float
switch by moisture or fuel, and chafing
of the float switch wiring against the
fuel tank conduit. We are issuing this
AD to prevent such contamination and
chafing, which could present an ignition
source inside the fuel tank that could
cause a fire or explosion.
Effective September 13, 2005.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in the AD
as of September 13, 2005.
DATES:
You may examine the AD
docket on the Internet at https://
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.
ADDRESSES:
FOR FURTHER INFORMATION CONTACT:
Sulmo Mariano, Aerospace Engineer,
Propulsion Branch, ANM–140S, FAA,
Seattle Aircraft Certification Office,
1601 Lind Avenue, SW., Renton,
Washington 98055–4056; telephone
(425) 917–6501; fax (425) 917–6590.
SUPPLEMENTARY INFORMATION:
Examining the Docket
You may examine the AD docket on
the Internet at https://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.
14 CFR Part 39
Discussion
[Docket No. FAA–2005–20799; Directorate
Identifier 2004–NM–264–AD; Amendment
39–14212; AD 2005–16–07]
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to all Boeing Model 727 airplanes.
That NPRM was published in the
Federal Register on April 4, 2005 (70 FR
16979). That NPRM proposed to require
determining whether any float switches
are installed in the fuel tanks, and
corrective actions if necessary.
RIN 2120–AA64
Airworthiness Directives; Boeing
Model 727 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
SUMMARY: The FAA is adopting a new
airworthiness directive (AD) for all
Boeing Model 727 airplanes. This AD
requires determining whether any float
switches are installed in the fuel tanks,
VerDate jul<14>2003
15:06 Aug 08, 2005
Jkt 205001
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.
PO 00000
Frm 00010
Fmt 4700
Sfmt 4700
Support for Proposed AD
One commenter, the airplane
manufacturer, concurs with the content
of the proposed AD.
Request To Change Applicability
One commenter asks that the
applicability specified in the proposed
AD be limited to Boeing Model 727
airplanes that have float switches
installed. The commenter states that the
effectivity of the proposed AD will
encompass all Boeing Model 727–100
airplanes operated by them, even
though Model 727–100 airplanes are not
included in the effectivity specified in
the service bulletin referenced in the
proposed AD. The commenter adds that
the effectivity in the referenced service
bulletin is limited to airplanes with
factory installed auxiliary fuel tanks; the
design for Model 727–100 airplanes
does not include float switches in the
main fuel tanks because those airplanes
utilize the Volumetric Top-Off system
instead. The commenter realizes that we
are concerned that the effectivity of the
referenced service bulletin may not
encompass all possible scenarios
involving the subject float switches, as
stated in the Supplementary
Information section of the proposed AD.
In consideration of this concern, the
commenter notes that the effectivity of
the proposed AD can be reduced to
include only airplanes where the
design, as delivered or modified,
utilizes float switches in the airplane
fuel tanks. The commenter adds that,
the requested change has no effect on
safety, but does remove the burden of
showing compliance to a known nonapplicable configuration.
We do not agree with the commenter.
The planning information specified in
the referenced service bulletin identifies
only Boeing Model 727–100 airplanes
delivered with two auxiliary fuel tanks
installed. However, the effectivity
specified in the service bulletin
identifies all Boeing Model 727–100 and
–200 airplanes with active Boeing
fueling float switch shutoff systems
installed. We point out that the subject
of this AD is the float switch itself—
regardless of the airplane model on
which it is installed. To help operators
determine if a particular airplane is
subject to this AD, we have included all
airplane models on which the float
switch may be installed in the
applicability of this AD. However,
operators must determine if the float
switch is installed on their airplanes. As
specified in the AD, this determination
can be made by a review of airplane
maintenance records, instead of an
inspection of the fuel tanks; such a
E:\FR\FM\09AUR1.SGM
09AUR1
]]>Agencies
[Federal Register Volume 70, Number 152 (Tuesday, August 9, 2005)]
[Rules and Regulations]
[Pages 46072-46074]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-15586]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-21088; Directorate Identifier 2004-NM-267-AD;
Amendment 39-14215; AD 2005-16-10]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 747-400 and 747-400D
Series Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Boeing Model 747-400 and 747-400D series airplanes. This AD
requires an inspection for corrosion and cracks of the station 980
upper deck floor beam, and repair and related investigative actions if
necessary. This AD results from reports of corrosion under the cart
lift threshold at the station 980 upper deck floor beam. We are issuing
this AD to detect and correct such corrosion, which could result in a
cracked or broken floor beam, extensive damage to adjacent structure,
and possible rapid decompression of the airplane.
DATES: Effective September 13, 2005.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of September 13,
2005.
ADDRESSES: You may examine the AD docket on the Internet at https://
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 https://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 would apply to certain Boeing Model
747-400 and 747-400D series airplanes. That NPRM was published in the
Federal Register on May 3, 2005 (70 FR 22826). That NPRM proposed to
require an inspection for corrosion and cracks of the station 980 upper
deck floor beam, and repair and related investigative actions if
necessary.
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comment that has been
received on the NPRM.
Support for the Proposed AD
The commenter supports the NPRM.
Explanation of Change to Paragraph (f)(2)
We have revised paragraph (f)(2) of this AD to correct a
typographical error that resulted in an incorrect paragraph reference.
Clarification of Alternative Methods of Compliance (AMOCs)
We have revised paragraph (h)(2) of this AD to clarify the AMOC
requirements.
Clarification of Compliance Time
We have made a minor editorial change to clarify the compliance
time in paragraph (f)(1) of this AD.
Conclusion
We have carefully reviewed the available data, including the
comment 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 363 airplanes of the affected design in the
worldwide fleet. The following table provides the estimated costs for
U.S. operators to comply with this AD.
[[Page 46073]]
Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Number of
Average Cost per U.S.-
Action Work hours labor rate Parts airplane registered Fleet cost
per hour airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Inspection..................................... 3 $65 None required.......................... $195 46 $8,970
--------------------------------------------------------------------------------------------------------------------------------------------------------
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
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
adding the following new airworthiness directive (AD):
2005-16-10 Boeing: Amendment 39-14215. Docket No. FAA-2005-21088;
Directorate Identifier 2004-NM-267-AD.
Effective Date
(a) This AD becomes effective September 13, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Boeing Model 747-400 and 747-400D series
airplanes, certificated in any category, as listed in Boeing Alert
Service Bulletin 747-53A2503, dated November 11, 2004.
Unsafe Condition
(d) This AD was prompted by reports of corrosion under the cart
lift threshold at the station 980 upper deck floor beam. We are issuing
this AD to detect and correct such corrosion, which could result in a
cracked or broken floor beam, extensive damage to adjacent structure,
and possible rapid decompression 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.
Inspection
(f) At the later of the times specified in paragraphs (f)(1) and
(f)(2) of this AD: Do a detailed inspection for corrosion and cracks of
the station 980 upper deck floor beam, in accordance with Boeing Alert
Service Bulletin 747-53A2503, dated November 11, 2004.
(1) Inspect 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; or
(2) Inspect at the time specified in paragraph (f)(2)(i),
(f)(2)(ii), or (f)(2)(iii) of this AD for the applicable airplane group
as identified in the service bulletin.
(i) For Group 1 airplanes: Within 18 months after the effective
date of this AD.
(ii) For Group 2 airplanes: Within 36 months after the effective
date of this AD.
(iii) For Group 3 airplanes: Within 120 months after the airplane
has been modified in accordance with Boeing Service Bulletin 747-25-
3107, or within 36 months after the effective date of this AD,
whichever occurs later.
Repair
(g) If any cracking or corrosion is found during any inspection
required by this AD, do all related investigative and corrective
actions before further flight, in accordance with Boeing Alert Service
Bulletin 747-53A2503, dated November 11, 2004. If the service bulletin
specifies to contact Boeing for appropriate action, repair before
further flight according to a method approved by the Manager, Seattle
Aircraft Certification Office (ACO), FAA; or according to data meeting
the certification basis of the airplane approved by an Authorized
Representative for the Boeing Delegation Option Authorization (DOA)
Organization who has been authorized by the Manager, Seattle ACO, to
make those findings. For a repair method to be approved, the approval
must specifically reference this AD.
Alternative Methods of Compliance (AMOCs)
(h)(1) The Manager, Seattle ACO, FAA, has the authority to approve
AMOCs for this AD, if requested in accordance with the procedures found
in 14 CFR 39.19.
(2) An AMOC that provides an acceptable level of safety may be used
for any repair required by this AD, if it
[[Page 46074]]
is approved by an Authorized Representative for the Boeing DOA
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.
Material Incorporated by Reference
(i) You must use Boeing Alert Service Bulletin 747-53A2503, dated
November 11, 2004, to perform the actions that are required by this AD,
unless the AD specifies otherwise. 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. Contact Boeing Commercial
Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207, for a copy of
this service information. 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 https://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 https://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.
Issued in Renton, Washington, on July 29, 2005.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-15586 Filed 8-8-05; 8:45 am]
BILLING CODE 4910-13-P
