Published 2013-09-17 · Federal Register document 2013-22414
Airworthiness Directives; the Boeing Company Airplanes
Publication summary
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by reports of cracked and corroded nuts on an outboard flap support rib. This AD requires, for certain airplanes, repetitive inspections of the cap seal for damaged sealant on nuts common to certain outboard flap support ribs, and related investigative and corrective actions if necessary. For certain other airplanes, this AD also requires repetitive inspections of the cap seal for damaged sealant on nuts common to certain outboard flap support ribs, related investigative and corrective actions if necessary, and if necessary, a detailed inspection to determine the nut type installed in the outboard flap support rib and corrective actions. This AD also provides terminating action for the repetitive inspections under certain conditions. We are issuing this AD to detect and correct cracked and corroded nuts and bolts and the installation of incorrect nuts on certain outboard flap support ribs, which could lead to additional nut and bolt damage in the joint, result in loss of an outboard flap, and adversely affect continued safe flight and landing of the airplane.
Why this record is shown
Source: Federal Register annual FAA metadata. Acquired 2026-09-03T22:23:42.577882+00:00. The title, summary and date are source facts.
- Source revision
- federal_register_ad_metadata_2013-a7b684f4a1b4614e
- Source row
- results[296]
- Raw source SHA-256
- a7b684f4a1b4614eef5ec9064d04a70a4701b45b0acd50058e29f235c625e705
Final-rule publication
Recorded publication clauses
- AD identifier printed in this edition
- 2013-18-02
- Effective date printed in this edition
- 2013-10-22
Read 14 complete recorded clauses
Effective Date
(a) Effective Date
This AD is effective October 22, 2013.
Exact source excerpt. Text positions 17226–17290, end exclusive, in the original decoded publication. SHA-256: 6eca5c56a26a7e39c8207cca19452a255383cf1a12c04bbcb9c46b87ced6bd8f
Affected ADs
(b) Affected ADs
None.
Exact source excerpt. Text positions 17290–17319, end exclusive, in the original decoded publication. SHA-256: 871a4afc60ceeae06e8010585055188633d616078500c45937092bfe892239c0
Applicability wording · Applicability
(c) Applicability
(1) This AD applies to The Boeing Company Model 767-200, 767-
300, 767-300F, and 767-400ER series airplanes; certificated in any
category; as identified in Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013.
(2) Installation of Supplemental Type Certificate (STC)
ST01920SE (http://rgl.faa.gov/Regulatory--and--Guidance--Library/
rgstc.nsf/0/59027f43b9a7486e86257b1d006591ee/
[[Page 57052]]
$FILE/ST01920SE.pdf) does not affect the ability to accomplish the
actions required by this AD. Therefore, for airplanes on which STC
ST01920SE is installed, a ``change in product'' alternative method
of compliance (AMOC) approval request is not necessary to comply
with the requirements of 14 CFR 39.17.
Exact source excerpt. Text positions 17319–18068, end exclusive, in the original decoded publication. SHA-256: bf1b9230c8ac69fcfd6b3851efe8e2585704159c4a53b56dd87de15d1345f35a
Subject
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 57, Wings.
Exact source excerpt. Text positions 18068–18185, end exclusive, in the original decoded publication. SHA-256: f43076ad1695c10a44c4bb69c7243af8d94773daee46e08e01ddc53c8b40de12
Unsafe Condition
(e) Unsafe Condition
This AD was prompted by reports of cracked and corroded nuts on
an outboard flap support rib. We are issuing this AD to detect and
correct cracked and corroded nuts and bolts and the installation of
incorrect nuts on certain outboard flap support ribs, which could
lead to additional nut and bolt damage in the joint, result in loss
of an outboard flap, and adversely affect continued safe flight and
landing of the airplane.
Exact source excerpt. Text positions 18185–18644, end exclusive, in the original decoded publication. SHA-256: 6858556f68c2b5bd78f7888168fb8623ab624b31f9ac2e5a0e644152b5ef3dd1
Compliance
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
Exact source excerpt. Text positions 18644–18746, end exclusive, in the original decoded publication. SHA-256: 00fbfa31932483f627d0ce0a11cbd2e35e15d9231842b91ac85623ce533912d3
For Group 1 Airplanes: Repetitive Inspections of the Support Ribs, Related Investigative and Corrective Actions, and Fastener Replacement
(g) For Group 1 Airplanes: Repetitive Inspections of the Support Ribs,
Related Investigative and Corrective Actions, and Fastener Replacement
For Group 1 airplanes, as specified in Boeing Service Bulletin
767-57A0131, Revision 1, dated May 8, 2013: Except as required by
paragraph (j) of this AD, at the time specified in table 1 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, do a detailed inspection of
the cap seal for damaged sealant on the nuts common to outboard flap
support rib numbers 1, 2, 7, and 8, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013. Do all applicable related
investigative and corrective actions before further flight, except
as specified in paragraphs (g)(1)(ii) and (g)(2)(ii) of this AD.
(1) If, during any detailed inspection of the cap seal required
by paragraph (g) of this AD, no damaged sealant is found on any
support rib, do the actions specified in paragraphs (g)(1)(i) and
(g)(1)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 1 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until all fasteners are
replaced within that support rib as required by paragraph (g)(1)(ii)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 1 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Replace
all fasteners within the support rib, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013.
(2) If, during any related investigative action required by
paragraph (g) of this AD, no cracking and no corrosion is found on
the nut, bolt, and washers of any support rib, do the actions
specified in paragraphs (g)(2)(i) and (g)(2)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 1 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until all fasteners are
replaced within that support rib as required by paragraph (g)(2)(ii)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 1 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Replace
all fasteners within the support rib, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013.
Exact source excerpt. Text positions 18746–21580, end exclusive, in the original decoded publication. SHA-256: be014b935b2ad9a62a7ef52c10a2d66b51bb75964425146056df70b6b1eb6977
For Group 2 and 3 Airplanes: Repetitive Inspections of the Support Ribs, Related Investigative and Corrective Actions, and Fastener Replacement
(h) For Group 2 and 3 Airplanes: Repetitive Inspections of the Support
Ribs, Related Investigative and Corrective Actions, and Fastener
Replacement
For Group 2 and 3 airplanes, as specified in Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Except as
required by paragraph (j) of this AD, at the time specified in table
2 of paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, do a detailed inspection of
the cap seal for damaged sealant on the nuts common to outboard flap
support rib numbers 1, 2, 7, and 8, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013. Do all applicable related
investigative and corrective actions before further flight.
(1) If, during any detailed inspection of the cap seal required
by paragraph (h) of this AD, no damaged sealant is found on any
support rib, do the actions specified in paragraphs (h)(1)(i) and
(h)(1)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 2 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until the actions required
by paragraph (h)(1)(ii) of this AD are done or until all fasteners
are replaced within that support rib as specified in paragraph (i)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 2 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Do a
detailed inspection to determine the nut type installed in the
outboard flap support rib and do all applicable corrective actions,
in accordance with the Accomplishment Instructions of Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013. Do all
applicable corrective actions before further flight.
(2) If, during any related investigative action required by
paragraph (h) of this AD, no cracking and no corrosion is found on
the nut, bolt, and washers of any support rib, do the actions
specified in paragraphs (h)(2)(i) and (h)(2)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 2 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until the actions required
by paragraph (h)(2)(ii) of this AD are done or until all fasteners
are replaced within that support rib as specified in paragraph (i)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 2 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Do a
detailed inspection to determine the nut type installed in the
outboard flap support rib and do all applicable corrective actions,
in accordance with the Accomplishment Instructions of Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013. Do all
applicable corrective actions before further flight.
Exact source excerpt. Text positions 21580–24796, end exclusive, in the original decoded publication. SHA-256: 92885660e8f7564ee880ac8cc9953c4a2715b14a5d5601e28150ed3b8d3e21d3
Terminating Action for Repetitive Inspections
(i) Terminating Action for Repetitive Inspections
(1) If cracking is found during any inspection required by
paragraph (g) or (h) of this AD: Replacing all the fasteners within
the outboard flap support rib number 1, 2, 7, or 8, in accordance
with the Accomplishment Instructions of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, terminates the inspections
required by paragraph (g) or (h) of this AD for that support rib
only.
(2) If a discrepancy other than cracking is found (e.g.,
corrosion) during any inspection required by paragraph (g) of this
AD: Replacing all the fasteners within the outboard flap support rib
number 1, 2, 7, or 8, in accordance with the Accomplishment
Instructions of Boeing Service Bulletin 767-57A0131, Revision 1,
dated May 8, 2013, terminates the inspections required by paragraph
(g) of this AD for that support rib only.
(3) If a discrepancy other than cracking is found (e.g.,
corrosion) during any inspection required by paragraph (h) of this
AD: Replacing the affected fastener terminates the repetitive
inspections for only that fastener within that support rib.
Exact source excerpt. Text positions 24796–25948, end exclusive, in the original decoded publication. SHA-256: 0d76470ca53abdfe1e863f27982ac6b9fa2ab73ce89168bd4eeb462fa01d7107
Exception to Service Information
(j) Exception to Service Information
Where Boeing Service Bulletin 767-57A0131, Revision 1, dated May
8, 2013, specifies a compliance time relative to the issue date of
that service bulletin, this AD requires compliance within the
specified compliance time after the effective date of this AD.
Exact source excerpt. Text positions 25948–26251, end exclusive, in the original decoded publication. SHA-256: c1c6c71205c623a8137f2ddc943e95b1f7085e2ad9183473f268e0b889cf4866
Credit for Previous Actions
(k) Credit for Previous Actions
This paragraph provides credit for the applicable actions
required by paragraphs (g), (h), and (i) of this AD, if those
actions were performed before the effective date of this AD using
Boeing Alert Service Bulletin 767-57A0131, dated October 30, 2012,
which is not incorporated by reference in this AD.
[[Page 57053]]
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Alternative Methods of Compliance (AMOCs)
(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) 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.
Exact source excerpt. Text positions 26613–27827, end exclusive, in the original decoded publication. SHA-256: e6cd0b7aee209e481f88a351b49def00d1b6a429d855e80eb3cf8228567c5462
Related Information
(m) Related Information
(1) For more information about this AD, contact Berhane Alazar,
Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue SW., Renton, Washington
98057-3356; phone: 425-917-6577; fax: 425-917-6590; email:
[email protected].
(2) Service information identified in this AD that is not
incorporated by reference may be obtained at the addresses specified
in paragraphs (n)(3) and (n)(4) of this AD.
Exact source excerpt. Text positions 27827–28312, end exclusive, in the original decoded publication. SHA-256: efcce8b455fe5d5d4a21d3925712373643c0547783106b01dcdbcda88e381c4f
Material Incorporated by Reference
(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 767-57A0131, Revision 1, dated May
8, 2013.
(ii) Reserved.
(3) 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.
(4) You may view this service information at FAA, Transport
Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. For
information on the availability of this material at the FAA, call
425-227-1221.
(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.
Exact source excerpt. Text positions 28312–29562, end exclusive, in the original decoded publication. SHA-256: 630890f27ad0b8aa880c269f0b02d49145acb66b7ce72932de9660323cecedf7
No replacement link has been established from this edition. The complete historical rule chain and current legal effect remain unknown.
Find all recorded historical references to AD 2013-18-02 · 0 printed reference observations in this pinned collection.
These are observations from one dated publication. Current legal status is unknown; aircraft applicability, installed configuration, compliance and burden require separate evidence. Missing or unparsed conditions remain unknown.
Why these observations are shown
They were extracted offline from the same immutable official HTML source as the complete recorded text. The dated source wording, original text coordinates and exact quote digests are retained. PDF/text agreement and current regulatory effect have not been qualified.
Observation revision: whole-ad-publication-clause-observations-1.0.1. Text SHA-256: 82a480d727a8d31142f0b417aa5527878e278aa2210a489a0175d1ed840c2927. Source manifest: f7a916dbb750336867ee77bbcd1705c4be580c9aaa97c1f7b405982117707dfd.
Official source · 2013-09-17
Publication text
This is the complete recorded text of this dated publication.
Current legal effect is unknown. Aircraft applicability, installed configuration and compliance require separate evidence. PDF/text agreement has not been evaluated.
Read the complete official publication text
[Federal Register Volume 78, Number 180 (Tuesday, September 17, 2013)]
[Rules and Regulations]
[Pages 57049-57053]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-22414]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0301; Directorate Identifier 2013-NM-025-AD;
Amendment 39-17575; AD 2013-18-02]
RIN 2120-AA64
Airworthiness Directives; the Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
The Boeing Company Model 767-200, -300, -300F, and -400ER series
airplanes. This AD was prompted by reports of cracked and corroded nuts
on an outboard flap support rib. This AD requires, for certain
airplanes, repetitive inspections of the cap seal for damaged sealant
on nuts common to certain outboard flap support ribs, and related
investigative and corrective actions if necessary. For certain other
airplanes, this AD also requires repetitive inspections of the cap seal
for damaged sealant on nuts common to certain outboard flap support
ribs, related investigative and corrective actions if necessary, and if
necessary, a detailed inspection to determine the nut type installed in
the outboard flap support rib and corrective actions. This AD also
provides terminating action for the repetitive inspections under
certain conditions. We are issuing this AD to detect and correct
cracked and corroded nuts and bolts and the installation of incorrect
nuts on certain outboard flap support ribs, which could lead to
additional nut and bolt damage in the joint, result in loss of an
outboard flap, and adversely affect continued safe flight and landing
of the airplane.
DATES: This AD is effective October 22, 2013.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of October 22,
2013.
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 review copies of the referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, Washington. For information on the availability of
this material at the FAA, call 425-227-1221.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this AD, the regulatory evaluation,
any comments received, and other information. The address for the
Docket Office (phone: 800-647-5527) is Document Management Facility,
U.S. Department of Transportation, Docket Operations, M-30, West
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE.,
Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Berhane Alazar, Aerospace Engineer,
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office,
1601 Lind Avenue SW., Renton, Washington 98057-3356; phone: 425-917-
6577; fax: 425-917-6590; email: [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
The NPRM published in the Federal Register on April 10, 2013 (78 FR
21276). The NPRM proposed to require, for certain airplanes, repetitive
inspections of the cap seal for damaged sealant on nuts common to
certain outboard flap support ribs, related investigative and
corrective actions if necessary, and replacement of all fasteners in
the support ribs, which terminates the repetitive inspections. For
certain other airplanes, the NPRM proposed to require repetitive
[[Page 57050]]
inspections of the cap seal for damaged sealant on nuts common to
certain outboard flap support ribs, related investigative and
corrective actions if necessary, and if necessary, a detailed
inspection to determine the nut type installed in the outboard flap
support rib and corrective actions. For those airplanes, the NPRM also
proposed to provide for optional replacement of all fasteners in the
support ribs, which would terminate the repetitive inspections.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the proposal
(78 FR 21276, April 10, 2013) and the FAA's response to each comment.
Request To Refer to Revised Service Information
Japan Airlines, UPS, and Boeing stated that Boeing has issued
revised service information and requested that the service information
referenced in the NPRM (78 FR 21276, April 10, 2013) be updated to
refer to Boeing Service Bulletin 767-57A0131, Revision 1, dated May 8,
2013.
We agree with the commenters' requests and have revised paragraphs
(c), (g), (h), (i), and (j) of this final rule to include Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013. We have
also added a new paragraph (k) of this AD to provide credit for actions
accomplished before the effective date of this AD using Boeing Alert
Service Bulletin 767-57A0131, dated October 30, 2012, and reidentified
the subsequent paragraphs.
Clarification Regarding the Installation of Winglets
Aviation Partners Boeing and UPS stated that the installation of
winglets per Supplemental Type Certificate (STC) ST01920SE (http://
rgl.faa.gov/Regulatory--and--Guidance--Library/rgstc.nsf/0/
59027f43b9a7486e86257b1d006591ee/$FILE/ST01920SE.pdf) does not affect
the accomplishment of the manufacturer's service instructions.
We agree with the commenters' statements that the installation of
winglets as specified in STC ST01920SE (http://rgl.faa.gov/Regulatory--
and--Guidance--Library/rgstc.nsf/0/59027f43b9a7486e86257b1d006591ee/
$FILE/ST01920SE.pdf) does not affect accomplishment of the requirements
of this AD, and for airplanes on which STC ST01920SE is installed, a
``change in product'' AMOC approval request is not necessary to comply
with the requirements of section 39.17 of the Federal Aviation
Regulations (14 CFR 39.17). We have added this provision in new
paragraph (c)(2) of this final rule.
Request To Correct a Reference to a Table Number
UPS noted a typographical error in paragraph (h)(1)(i) of the NPRM
(78 FR 21276, April 10, 2013). The inspection intervals are identified
in table 2 of paragraph 1.E., ``Compliance,'' of Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013, and the NPRM
erroneously referred to table 1.
We agree there is an error and have revised paragraph (h)(1)(i) of
this AD to refer to table 2 of paragraph 1.E., ``Compliance,'' of
Boeing Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013.
Request To Clarify Terminating Action
UPS noted that paragraph (i) of the NPRM (78 FR 21276, April 10,
2013) implies that the only terminating action for the repetitive
inspections proposed by paragraph (h) of the NPRM is replacement of all
fasteners within a support rib. UPS stated that the Boeing service
information provides terminating action by replacing fasteners at all
discrepant or corroded locations and/or the verification of correct nut
type at all other locations. UPS requested that these corrective
actions be identified as terminating action for the inspections
proposed by paragraph (h) of the NPRM for the associated support rib.
We agree that clarification is needed regarding terminating action
for the repetitive inspections required by paragraph (h) of this final
rule. We have changed the header of paragraph (i) of this final rule to
``Terminating Action for Repetitive Inspections'' and split the
paragraph into three subparagraphs. Paragraph (i)(1) of this final rule
states that, if during any inspection required by paragraphs (g) or (h)
of this AD, any cracking is found, all fasteners within a support rib
must be replaced to terminate the repetitive inspections for that
support rib only. New paragraph (i)(2) of this final rule states that
if a discrepancy other than cracking is found (e.g., corrosion) during
any inspection required by paragraph (g) of this final rule, all
fasteners within a support rib must be replaced to terminate the
repetitive inspections for that support rib only. New paragraph (i)(3)
of this final rule states that if a discrepancy other than cracking is
found (e.g., corrosion) during any inspection required by paragraph (h)
of this final rule, replacing the affected fastener terminates the
repetitive inspections for only that fastener within that support rib.
Request To Combine Paragraphs (h)(1) and (h)(2) of the NPRM (78 FR
21276, April 10, 2013)
UPS stated that the intent of paragraph (h) of the NPRM (78 FR
21276, April 10, 2013) is to identify the requirements of the initial
inspection, and the intent of paragraphs (h)(1) and (h)(2) of the NPRM
is to identify the requirements of the repetitive inspections based on
the findings of the initial inspection. UPS stated that the
investigative and corrective actions applicable to paragraph (h)(1) of
the NPRM are the same as those in paragraph (h)(2) of the NPRM and
suggested that these two paragraphs could be combined without affecting
the intent of this AD.
We do not agree that paragraphs (h)(1) and (h)(2) of this final
rule can be combined. Paragraph (h)(1) of this final rule describes
actions based on the findings of the cap seal detailed inspections, and
paragraph (h)(2) of this final rule addresses actions based on the
findings of the inspections for the nuts, bolts, and washers on the
support ribs. We have not changed this final rule in this regard.
Request To Change Compliance Time for Initial Detailed Inspection
UPS requested that the threshold for conducting the initial
detailed inspection of the cap seal required by paragraphs (g) and (h)
of the NPRM (78 FR 21276, April 10, 2013) be extended from 12 months to
24 months. UPS commented that if it is not possible to extend the
threshold for the initial inspection, then the text should be revised
to read ``12 months after the AD effective date or within the
appropriate total years of aircraft service-life''--whichever occurs
later. UPS requested this change to reflect the reported technical data
as well as to give operators time to schedule the task at a facility
capable of accomplishing the scope of the work.
We do not agree with UPS's request to extend the threshold for the
initial detailed inspection. We have determined that the compliance
time, as proposed, represents the maximum interval of time allowable
for the affected airplanes to continue to safely operate before the
initial inspection is done. Since maintenance schedules vary among
operators, there would be no assurance that the airplane would be
modified during that maximum interval. We have not changed this final
rule in this regard.
[[Page 57051]]
Furthermore, we do not agree with UPS's request to revise the
compliance time text to include ``or within the appropriate total years
of aircraft service-life''--whichever occurs later. The installation of
an incorrect nut during production, and the possibility of the nut
cracking due to being overtorqued, is unrelated to the age of the
airplane. 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 changes described previously--and minor editorial
changes. We have determined that these minor changes:
<bullet> Are consistent with the intent that was proposed in the
NPRM (78 FR 21276, April 10, 2013) for correcting the unsafe condition;
and
<bullet> Do not add any additional burden upon the public than was
already proposed in the NPRM (78 FR 21276, April 10, 2013).
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.
Costs of Compliance
We estimate that this AD affects 440 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Detailed inspections............... 1 work-hour x $85 per hour $0 $85 $37,400
= $85.
Replacement of all fasteners (Group 2 work-hours x $85 per hour 2,553 2,723 1,198,120
1 airplanes). = $170.
----------------------------------------------------------------------------------------------------------------
We estimate the following costs to do any necessary related
investigative and corrective actions and detailed inspections for nut
type that would be required based on the results of the inspections. We
have no way of determining the number of aircraft that might need these
actions.
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Related investigative and corrective Up to 3 work-hours x $85 $2,553 Up to $2,808.
actions and detailed inspection for per hour = $255.
nut type.
----------------------------------------------------------------------------------------------------------------
According to the manufacturer, some of the costs of this AD may be
covered under warranty, thereby reducing the cost impact on affected
individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the distribution of power and responsibilities among the various
levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in, 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):
2013-18-02 The Boeing Company: Amendment 39-17575; Docket No. FAA-
2013-0301; Directorate Identifier 2013-NM-025-AD.
(a) Effective Date
This AD is effective October 22, 2013.
(b) Affected ADs
None.
(c) Applicability
(1) This AD applies to The Boeing Company Model 767-200, 767-
300, 767-300F, and 767-400ER series airplanes; certificated in any
category; as identified in Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013.
(2) Installation of Supplemental Type Certificate (STC)
ST01920SE (http://rgl.faa.gov/Regulatory--and--Guidance--Library/
rgstc.nsf/0/59027f43b9a7486e86257b1d006591ee/
[[Page 57052]]
$FILE/ST01920SE.pdf) does not affect the ability to accomplish the
actions required by this AD. Therefore, for airplanes on which STC
ST01920SE is installed, a ``change in product'' alternative method
of compliance (AMOC) approval request is not necessary to comply
with the requirements of 14 CFR 39.17.
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 57, Wings.
(e) Unsafe Condition
This AD was prompted by reports of cracked and corroded nuts on
an outboard flap support rib. We are issuing this AD to detect and
correct cracked and corroded nuts and bolts and the installation of
incorrect nuts on certain outboard flap support ribs, which could
lead to additional nut and bolt damage in the joint, result in loss
of an outboard flap, and adversely affect continued safe flight and
landing of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) For Group 1 Airplanes: Repetitive Inspections of the Support Ribs,
Related Investigative and Corrective Actions, and Fastener Replacement
For Group 1 airplanes, as specified in Boeing Service Bulletin
767-57A0131, Revision 1, dated May 8, 2013: Except as required by
paragraph (j) of this AD, at the time specified in table 1 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, do a detailed inspection of
the cap seal for damaged sealant on the nuts common to outboard flap
support rib numbers 1, 2, 7, and 8, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013. Do all applicable related
investigative and corrective actions before further flight, except
as specified in paragraphs (g)(1)(ii) and (g)(2)(ii) of this AD.
(1) If, during any detailed inspection of the cap seal required
by paragraph (g) of this AD, no damaged sealant is found on any
support rib, do the actions specified in paragraphs (g)(1)(i) and
(g)(1)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 1 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until all fasteners are
replaced within that support rib as required by paragraph (g)(1)(ii)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 1 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Replace
all fasteners within the support rib, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013.
(2) If, during any related investigative action required by
paragraph (g) of this AD, no cracking and no corrosion is found on
the nut, bolt, and washers of any support rib, do the actions
specified in paragraphs (g)(2)(i) and (g)(2)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 1 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until all fasteners are
replaced within that support rib as required by paragraph (g)(2)(ii)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 1 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Replace
all fasteners within the support rib, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013.
(h) For Group 2 and 3 Airplanes: Repetitive Inspections of the Support
Ribs, Related Investigative and Corrective Actions, and Fastener
Replacement
For Group 2 and 3 airplanes, as specified in Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Except as
required by paragraph (j) of this AD, at the time specified in table
2 of paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, do a detailed inspection of
the cap seal for damaged sealant on the nuts common to outboard flap
support rib numbers 1, 2, 7, and 8, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 767-57A0131,
Revision 1, dated May 8, 2013. Do all applicable related
investigative and corrective actions before further flight.
(1) If, during any detailed inspection of the cap seal required
by paragraph (h) of this AD, no damaged sealant is found on any
support rib, do the actions specified in paragraphs (h)(1)(i) and
(h)(1)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 2 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until the actions required
by paragraph (h)(1)(ii) of this AD are done or until all fasteners
are replaced within that support rib as specified in paragraph (i)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 2 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Do a
detailed inspection to determine the nut type installed in the
outboard flap support rib and do all applicable corrective actions,
in accordance with the Accomplishment Instructions of Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013. Do all
applicable corrective actions before further flight.
(2) If, during any related investigative action required by
paragraph (h) of this AD, no cracking and no corrosion is found on
the nut, bolt, and washers of any support rib, do the actions
specified in paragraphs (h)(2)(i) and (h)(2)(ii) of this AD.
(i) Repeat the detailed inspection of the cap seal on that
support rib thereafter at the intervals specified in table 2 of
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, until the actions required
by paragraph (h)(2)(ii) of this AD are done or until all fasteners
are replaced within that support rib as specified in paragraph (i)
of this AD.
(ii) Except as required by paragraph (j) of this AD, at the time
specified in table 2 of paragraph 1.E., ``Compliance,'' of Boeing
Service Bulletin 767-57A0131, Revision 1, dated May 8, 2013: Do a
detailed inspection to determine the nut type installed in the
outboard flap support rib and do all applicable corrective actions,
in accordance with the Accomplishment Instructions of Boeing Service
Bulletin 767-57A0131, Revision 1, dated May 8, 2013. Do all
applicable corrective actions before further flight.
(i) Terminating Action for Repetitive Inspections
(1) If cracking is found during any inspection required by
paragraph (g) or (h) of this AD: Replacing all the fasteners within
the outboard flap support rib number 1, 2, 7, or 8, in accordance
with the Accomplishment Instructions of Boeing Service Bulletin 767-
57A0131, Revision 1, dated May 8, 2013, terminates the inspections
required by paragraph (g) or (h) of this AD for that support rib
only.
(2) If a discrepancy other than cracking is found (e.g.,
corrosion) during any inspection required by paragraph (g) of this
AD: Replacing all the fasteners within the outboard flap support rib
number 1, 2, 7, or 8, in accordance with the Accomplishment
Instructions of Boeing Service Bulletin 767-57A0131, Revision 1,
dated May 8, 2013, terminates the inspections required by paragraph
(g) of this AD for that support rib only.
(3) If a discrepancy other than cracking is found (e.g.,
corrosion) during any inspection required by paragraph (h) of this
AD: Replacing the affected fastener terminates the repetitive
inspections for only that fastener within that support rib.
(j) Exception to Service Information
Where Boeing Service Bulletin 767-57A0131, Revision 1, dated May
8, 2013, specifies a compliance time relative to the issue date of
that service bulletin, this AD requires compliance within the
specified compliance time after the effective date of this AD.
(k) Credit for Previous Actions
This paragraph provides credit for the applicable actions
required by paragraphs (g), (h), and (i) of this AD, if those
actions were performed before the effective date of this AD using
Boeing Alert Service Bulletin 767-57A0131, dated October 30, 2012,
which is not incorporated by reference in this AD.
[[Page 57053]]
(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) 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 Berhane Alazar,
Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue SW., Renton, Washington
98057-3356; phone: 425-917-6577; fax: 425-917-6590; email:
[email protected].
(2) Service information identified in this AD that is not
incorporated by reference 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 767-57A0131, Revision 1, dated May
8, 2013.
(ii) Reserved.
(3) 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.
(4) You may view this service information at FAA, Transport
Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. For
information on the availability of this material at the FAA, call
425-227-1221.
(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, Washington, on August 23, 2013.
Stephen P. Boyd,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-22414 Filed 9-16-13; 8:45 am]
BILLING CODE 4910-13-P
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