[Federal Register Volume 78, Number 232 (Tuesday, December 3, 2013)]
[Rules and Regulations]
[Pages 72561-72564]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-28611]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0420; Directorate Identifier 2011-NM-241-AD;
Amendment 39-17685; AD 2013-24-11]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B,
747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and
747SP series airplanes. This AD was prompted by a report of a disbonded
doubler and a skin crack in section 41 of the fuselage, and multiple
reports of cracked or missing fastener heads. This AD requires
repetitive inspections for cracking of the fuselage skin, discrepant
fasteners, and for disbonds at the doublers; and related investigative
and corrective actions if necessary. For certain airplanes, this AD
also requires a terminating repair for repair doublers. We are issuing
this AD to prevent rapid decompression and loss of structural integrity
of the airplane due to such disbonding and subsequent cracking of the
skin panels.
DATES: This AD is effective January 7, 2014.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of January 7,
2014.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com. You may view this referenced service information
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW.,
Renton, WA. For information on the availability of this material at the
FAA, call 425-227-1221.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this 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: Nathan Weigand, Aerospace Engineer,
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office
(ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6428; fax: 425-917-6590; email: [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to the specified products. The
NPRM published in the Federal Register on May 16, 2013 (78 FR 28767).
The NPRM proposed to require repetitive inspections for cracking of the
fuselage skin, discrepant fasteners, and for disbonds at the doublers;
and related investigative and corrective actions if necessary. For
certain airplanes, the NPRM also proposed to require a terminating
repair for repair doublers.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the proposal
(78 FR 28767, May 16, 2013) and the FAA's response to each comment.
Request To Add Terminating Action for Other AD Actions
Boeing requested that we include the requirements of paragraph (h)
of AD 2006-24-05, Amendment 39-14834 (76 FR 68434, November 27, 2006),
in paragraph (k)(3) of the NPRM (78 FR 28767, May 16, 2013), which
specifies that accomplishing the required actions proposed by the NPRM
terminates certain requirements of AD 2006-24-05. Boeing stated that
including the requirements of paragraph (h) of AD 2006-24-05 in
paragraph (k) of the NPRM would then be consistent with paragraph
(k)(2) of the NPRM that
[[Page 72562]]
includes paragraph (l) of AD 2006-24-02.
We do not agree with the commenter's request. Boeing Service
Bulletin 747-53A2747, Revision 2, dated February 22, 2012, which is the
referenced service information in this final rule, is an alternative
method of compliance (AMOC) for the three ADs specified in paragraph
(k) of this final rule for only the corresponding paragraphs of those
ADs that are listed in paragraphs (k)(1), (k)(2), and (k)(3) of this
final rule. Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2012, does not list paragraph (h) of AD 2006-24-05,
Amendment 39-14834 (76 FR 68434, November 27, 2006), as one of the
paragraphs for which the service information is a method of compliance.
We have not changed this final rule in this regard.
Request To Revise the Compliance Time
Delta Airlines (DAL) requested that we revise the compliance time
to make it more feasible for an operator to accomplish the actions in
the NPRM (78 FR 28767, May 16, 2013). DAL stated that certain affected
DAL airplanes will require inspections within 150 flight cycles after
the effective date of the final rule. DAL also stated that current
usage of the affected DAL airplanes is approximately 500 to 540 flight
cycles per year and, therefore, the 150-flight-cycle compliance time
would require ``special visits to complete.''
We do not agree with the commenter's request to extend the
compliance time. In developing an appropriate compliance time for this
final rule, we considered the urgency associated with the identified
unsafe condition and the manufacturer's recommendations. Disbonded
doublers, skin cracking, and cracked or missing fastener heads are a
significant safety issue, and we have determined that the inspection
compliance times are warranted. The commenter provided no technical
justification for revising the inspection thresholds. However, under
the provisions of paragraph (l) of this final rule, we will consider
requests for approval of an extension of the compliance time if
sufficient data are submitted to substantiate that the extension would
provide an acceptable level of safety. We have not changed this final
rule in this regard.
Request To Expand Work-Hour Break-Outs
DAL requested that we break out the work-hours identified in
paragraph G. (Manpower) of Boeing Service Bulletin 747-53A2747,
Revision 2, dated February 22, 2012, by zones and conditions that will
ultimately assist the operators in scheduling each unique condition.
DAL stated that the compliance times in paragraph 1.E., ``Compliance,''
of Boeing Service Bulletin 747-53A2747, Revision 2, dated February 22,
2012, are broken out by Zone 1 and Zone 2, and can occur at different
times depending on each resulting condition.
We do not agree with the commenter's request. The stated costs in
ADs must address all actions mandated by the AD. The hours described in
paragraph G. (Manpower) of Boeing Service Bulletin 747-53A2747,
Revision 2, dated February 22, 2012, are an estimate of the total hours
to perform the actions. This final rule includes the work-hours
specified in Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2012. These actions are not intended to be broken out to a
task-by-task level. We have not changed this final rule in this regard.
Request To Revise AD 2006-24-02, Amendment 39-14831 (71 FR 67445,
November 22, 2006)
DAL requested that we support an expedited revision to AD 2006-24-
02, Amendment 39-14831 (71 FR 67445, November 22, 2006), prior to
issuance of this final rule. DAL stated that according to a recent
customer support presentation of Boeing Service Bulletin 747-53A2747,
Revision 2, dated February 22, 2012, Boeing is currently working on a
revision to this service bulletin, which may relax some compliance
times.
We do not agree with the commenter's request. We have not received
Revision 3 to Boeing Service Bulletin 747-53A2747 to review. We have
determined that this final rule must not be delayed for issuance of a
new revision to Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2012, since we have determined that an unsafe condition
exists and that inspections in this final rule must be conducted to
ensure continued safety. When Revision 3 of Boeing Service Bulletin
747-53A2747 is submitted, we will review and evaluate it as an
alternative method of compliance to this final rule and determine if
additional rulemaking is necessary. We have not changed this final rule
in this regard.
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this AD with the change described previously except for minor editorial
changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM (78 FR 28767, May 16, 2013) for correcting the unsafe condition;
and
Do not add any additional burden upon the public than was
already proposed in the NPRM (78 FR 28767, May 16, 2013).
Costs of Compliance
We estimate that this AD affects 98 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
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Cost per
Action Labor cost Parts cost product Cost on U.S. operators
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Inspections.................. 878 work-hours $0 $74,630 per $7,313,740 per inspection cycle.
x $85 per hour inspection
= $74,630 per cycle.
inspection
cycle.
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We have received no definitive data that would enable us to provide
cost estimates for the on-condition actions specified in this AD.
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
[[Page 72563]]
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
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 FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):
2013-24-11 The Boeing Company: Amendment 39-17685; Docket No. FAA-
2013-0420; Directorate Identifier 2011-NM-241-AD.
(a) Effective Date
This AD is effective January 7, 2014.
(b) Affected ADs
This AD affects AD 2006-20-02, Amendment 39-14771 (71 FR 56861,
September 28, 2006); AD 2006-24-02, Amendment 39-14831 (71 FR 67445,
November 22, 2006); and AD 2006-24-05, Amendment 39-14834 (71 FR
68434, November 27, 2006).
(c) Applicability
This AD applies to The Boeing Company Model 747-100, 747-100B,
747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-
400D, 747-400F, 747SR, and 747SP series airplanes; certificated in
any category; as identified in Boeing Service Bulletin 747-53A2747,
Revision 2, dated February 22, 2012.
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 53, Fuselage.
(e) Unsafe Condition
This AD was prompted by a disbonded doubler and a skin crack in
section 41 of the fuselage, and multiple reports of cracked or
missing fastener heads. We are issuing this AD to prevent rapid
decompression and loss of structural integrity of the airplane due
to such disbonding and subsequent cracking of the skin panels.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Repetitive Skin Panel, Fastener, and Doubler Inspections
At the applicable time specified in paragraph 1.E.,
``Compliance,'' of Boeing Service Bulletin 747-53A2747, Revision 2,
dated February 22, 2012, except as required by paragraphs (i)(1) and
(i)(3) of this AD: Do the applicable inspections (including
detailed, high frequency eddy current (HFEC), and low frequency eddy
current (LFEC)) for any cracking of the fuselage skin, for
discrepant fasteners, and for disbonds at the doublers; and do all
applicable related investigative and corrective actions in
accordance with the Accomplishment Instructions of Boeing Service
Bulletin 747-53A2747, Revision 2, dated February 22, 2012, except as
provided by paragraph (i)(2) of this AD. Repeat the applicable
inspections thereafter at intervals not to exceed those specified in
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-
53A2747, Revision 2, dated February 22, 2012. Do all applicable
related investigative and corrective actions at the applicable time
specified in paragraph 1.E., ``Compliance,'' of Boeing Service
Bulletin 747-53A2747, Revision 2, dated February 22, 2012. Options
provided in Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2011, for accomplishing the disbond inspection are
acceptable for the corresponding requirements of this paragraph
provided that the inspection is done at the applicable times in
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-
53A2747, Revision 2, dated February 22, 2011.
(1) Replacing a skin panel, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 747-53A2747,
Revision 2, dated February 22, 2012, is an acceptable alternative to
doing the structural repair manual (SRM) skin panel repairs and the
repetitive skin panel inspections specified in tables 1, 2, and 3 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-
53A2747, Revision 2, dated February 22, 2012, for only the skin
panel that has been replaced.
(2) Accomplishment of the terminating repair identified in
tables 4 and 5 of paragraph 1.E., ``Compliance,'' of Boeing Service
Bulletin 747-53A2747, Revision 2, dated February 22, 2012,
terminates the repetitive inspections identified in tables 4 and 5
of paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-
53A2747, Revision 2, dated February 22, 2012, for only the area on
which the terminating repair has been done.
(h) Terminating Action
For airplanes identified in tables 4 and 5 of paragraph 1.E.,
``Compliance,'' of Boeing Service Bulletin 747-53A2747, Revision 2,
dated February 22, 2012: At the applicable compliance time specified
in paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-
53A2747, Revision 2, dated February 22, 2012, do the terminating
action for the repair doubler, including doing an open hole HFEC
inspection for skin cracks at the fastener holes common to the
inspection area and an inspection for disbond of the internal
doubler; and as applicable, replacing the existing external repair
doubler with a new extended external repair doubler, in accordance
with the Accomplishment Instructions of Boeing Service Bulletin 747-
53A2747, Revision 2, dated February 22, 2012, except as provided by
paragraph (i)(2) of this AD. Accomplishment of the terminating
action identified in tables 4 and 5 of paragraph 1.E.,
``Compliance,'' of Boeing Service Bulletin 747-53A2747, Revision 2,
dated February 22, 2012, terminates the repetitive inspections
identified in tables 4 and 5 of paragraph 1.E., ``Compliance,'' of
Boeing Service Bulletin 747-53A2747, Revision 2, dated February 22,
2012, for only areas on which the terminating action has been done.
(i) Exceptions to Certain Service Information Instructions
This paragraph specifies exceptions to certain instructions in
Boeing Service Bulletin 747-53A2747, Revision 2, dated February 22,
2012.
(1) Where Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2012, specifies a compliance time after the ``original
issue date of this service bulletin,'' this AD requires compliance
within the specified compliance time after the effective date of
this AD.
(2) Where Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2012, specifies to contact Boeing for special repair
instructions, this AD requires using a method approved in accordance
with the procedures specified in paragraph (l) of this AD.
(3) The Condition column of paragraph 1.E., ``Compliance,'' of
Boeing Service Bulletin 747-53A2747, Revision 2, dated February 22,
2012, refers to certain
[[Page 72564]]
conditions ``as of the original issue date of this service
bulletin.'' This AD, however, applies to the airplanes with the
specified condition as of the effective date of this AD.
(j) Credit for Previous Actions
This paragraph provides credit for the actions required by
paragraphs (g) and (h) of this AD, if those actions were performed
before the effective date of this AD using Boeing Service Bulletin
747-53A2747, Revision 1, dated October 12, 2011, which is not
incorporated by reference in this AD.
(k) Terminating Action for Other ADs
(1) Accomplishing the requirements of this AD terminates the
requirements of paragraphs (f), (g), and (h) of AD 2006-20-02,
Amendment 39-14771 (71 FR 56861, September 28, 2006).
(2) Accomplishing the requirements of this AD terminates the
requirements of paragraphs (f), (k), and (l) of AD 2006-24-02,
Amendment 39-14831 (71 FR 67445, November 22, 2006).
(3) Accomplishing the requirements of this AD terminates the
requirements of paragraphs (f) and (i) of AD 2006-24-05, Amendment
39-14834 (71 FR 68434, November 27, 2006).
(l) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Seattle Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested
using the procedures found in 14 CFR 39.19. In accordance with 14
CFR 39.19, send your request to your principal inspector or local
Flight Standards District Office, as appropriate. If sending
information directly to the manager of the ACO, send it to the
attention of the person identified in paragraph (m)(1) of this AD.
Information may be emailed to: [email protected].
(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.
(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 the
Boeing Commercial Airplanes Organization Designation Authorization
(ODA) that 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.
(m) Related Information
(1) For more information about this AD, contact Nathan Weigand,
Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft
Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-
3356; phone: 425-917-6428; fax: 425-917-6590; email:
[email protected].
(2) Service information identified in this AD that is not
incorporated by reference in this AD may be obtained at the
addresses specified in paragraphs (n)(3) and (n)(4) of this AD.
(n) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
(i) Boeing Service Bulletin 747-53A2747, Revision 2, dated
February 22, 2012.
(ii) Reserved.
(3) For Boeing service information identified in this AD,
contact Boeing Commercial Airplanes, Attention: Data & Services
Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207;
telephone 206-544-5000, extension 1; fax 206-766-5680; Internet
https://www.myboeingfleet.com.
(4) You may review copies of the referenced service information
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW.,
Renton, WA. For information on the availability of this material at
the FAA, call 425-227-1221.
(5) You may view this service information that is incorporated
by reference 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/ibr-locations.html.
Issued in Renton, WA, on November 15, 2013.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-28611 Filed 12-2-13; 8:45 am]
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