Published 2016-03-01 · Federal Register document 2016-03884
Airworthiness Directives; The Boeing Company Airplanes
Publication summary
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-100, -200B, -200C, -200F, -300, -400, - 400D, and -400F series airplanes. This AD was prompted by reports of significant fuselage skin damage at certain parts of the dorsal fairing, due to wear from the dorsal fairing. This AD requires repetitive detailed inspections for wear and cracks of the fuselage skin under the dorsal fairing, and related investigative and corrective actions if necessary. This AD also requires repetitive post-repair external surface high frequency eddy current inspections of the blended areas of the skin and detailed inspections of the unrepaired areas, and related investigative and corrective actions if necessary. We are issuing this AD to detect and correct fuselage skin damage of the dorsal fairing area, which could result in skin cracking and consequent depressurization of the airplane.
Why this record is shown
Source: Federal Register annual FAA metadata. Acquired 2026-09-03T22:23:51.853224+00:00. The title, summary and date are source facts.
- Source revision
- federal_register_ad_metadata_2016-48fe8cb6c57c00b7
- Source row
- results[60]
- Raw source SHA-256
- 48fe8cb6c57c00b74623eb2b71ad0abe73b95a424a8ac83fecd389da4d1e3a81
Final-rule publication
Recorded publication clauses
- AD identifier printed in this edition
- 2016-04-18
- Effective date printed in this edition
- 2016-04-05
Read 13 complete recorded clauses
Effective Date
(a) Effective Date
This AD is effective April 5, 2016.
Exact source excerpt. Text positions 20141–20202, end exclusive, in the original decoded publication. SHA-256: e0b9104697e6199d134e939e0280f73f3b772f54a5ca84ad8aebd8834a1052a6
Affected ADs
(b) Affected ADs
None.
Exact source excerpt. Text positions 20202–20231, end exclusive, in the original decoded publication. SHA-256: 871a4afc60ceeae06e8010585055188633d616078500c45937092bfe892239c0
Applicability wording · Applicability
(c) Applicability
This AD applies to The Boeing Company Model 747-100, -200B, -
200C, -200F, -300, -400, -400D, and -400F series airplanes;
certificated in any category, as identified in Boeing Alert Service
Bulletin 747-53A2876, dated October 22, 2014.
Exact source excerpt. Text positions 20231–20493, end exclusive, in the original decoded publication. SHA-256: ea505facf5ba1974766efcbb93375931e4b53e87b6f4d499a7ad033174e3274e
Subject
(d) Subject
Air Transport Association (ATA) of America Code 53, Fuselage.
Exact source excerpt. Text positions 20493–20573, end exclusive, in the original decoded publication. SHA-256: 297e69b8a6e159f28612e8bd82a91daa2fd8fd1d9d38af67161f67738908fa6c
Unsafe Condition
(e) Unsafe Condition
This AD was prompted by reports of significant fuselage skin
damage at the dorsal fairing forward of station (STA) 2280 due to
wear from the dorsal fairing. We are issuing this AD to detect and
correct fuselage skin damage of the dorsal fairing area, which could
result in skin cracking and consequent depressurization of the
airplane.
Exact source excerpt. Text positions 20573–20941, end exclusive, in the original decoded publication. SHA-256: 6709801f4f0e15301abdcf73d62a9695e0573ba308f69bda3ebf2a592d84bd4c
Compliance
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
Exact source excerpt. Text positions 20941–21043, end exclusive, in the original decoded publication. SHA-256: 00fbfa31932483f627d0ce0a11cbd2e35e15d9231842b91ac85623ce533912d3
Inspections and Repair
(g) Inspections and Repair
At the applicable time specified in tables 1 and 2 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014, except as provided by paragraph (j)(1) of
this AD, do a detailed inspection of the fuselage skin under the
dorsal fairing for wear or cracks, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
53A2876, dated October 22, 2014, except as provided by paragraph (i)
of this AD and except as required by paragraph (j)(2) of this AD. Do
all applicable related investigative and corrective actions at the
time specified in paragraph 1.E., ``Compliance,'' of Boeing Alert
Service Bulletin 747-53A2876, dated October 22, 2014. Repeat the
applicable inspections of the fuselage skin thereafter at the
applicable times specified in paragraph 1.E., ``Compliance,'' of
Boeing Alert Service Bulletin 747-53A2876, dated October 22, 2014.
Exact source excerpt. Text positions 21043–22074, end exclusive, in the original decoded publication. SHA-256: a9eafbd9103cb0f9e703c651891c6389d0d3c3913610cd4b17a4b36b9684286a
Post-Repair Inspections
(h) Post-Repair Inspections
At the applicable time specified in tables 4 and 5 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014, except as provided by paragraph (j)(1) of
this AD, do an external surface high frequency eddy current
inspection of the blended areas of the skin and a detailed
inspection of the unrepaired areas, and do all applicable related
investigative and corrective actions, in accordance with Part 8 of
the Accomplishment Instructions of Boeing Alert Service Bulletin
747-53A2876, dated October 22, 2014, except as provided by paragraph
(i) of this AD and except as required by paragraph (j)(2) of this
AD. Do all applicable related investigative and corrective actions
at the time specified in paragraph 1.E., ``Compliance,'' of Boeing
Alert Service Bulletin 747-53A2876, dated October 22, 2014. Repeat
the applicable inspections of the blended areas of the skin
thereafter at the applicable times specified in paragraph 1.E.,
``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014. Accomplishing the inspections required by this
paragraph does not terminate the inspections required by paragraph
(g) of this AD.
Exact source excerpt. Text positions 22074–23317, end exclusive, in the original decoded publication. SHA-256: 6cba19394b76b4e55fa5c5863b1095376d7ad133f3f43a7fb9dbc01ee7721b4a
Post-Modification Inspections
(i) Post-Modification Inspections
Tables 3, 6, and 7 of paragraph 1.E., ``Compliance,'' of Boeing
Alert Service Bulletin 747-53A2876, dated October 22, 2014, specify
post-modification airworthiness limitation inspections in compliance
to 14 CFR 25.571(a)(3) at the modified locations, which support
compliance with 14 CFR 121.1109(c)(2) or 129.109(b)(2). As
airworthiness limitations, these inspections are required by
maintenance and operational rules. It is therefore unnecessary to
mandate them in this AD. Deviations from these inspections require
FAA approval, but do not require an alternative method of
compliance.
Exact source excerpt. Text positions 23317–23954, end exclusive, in the original decoded publication. SHA-256: a35ccefefc4724722776f6020fc154e285746af18c0ac17d79009b7153496857
Exceptions to Service Information Specifications
(j) Exceptions to Service Information Specifications
(1) Where Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014, specifies a compliance time ``after the
[[Page 10472]]
Original Issue date of this service bulletin,'' this AD requires
compliance within the specified compliance time after the effective
date of this AD.
(2) Although Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014, specifies to contact Boeing for repair data, and
specifies that action as ``RC'' (Required for Compliance), this AD
requires repair before further flight using a method approved in
accordance with the procedures specified in paragraph (k) of this
AD.
Exact source excerpt. Text positions 23954–24640, end exclusive, in the original decoded publication. SHA-256: 4f68ac98bf75b2198cb5b4b37f24fa1914ec97d6fc28cf063e3d901fc4457bf2
Alternative Methods of Compliance (AMOCs)
(k) 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 (l)(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, modification, or alteration 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. To be approved, the
repair method, modification deviation, or alteration deviation must
meet the certification basis of the airplane, and the approval must
specifically refer to this AD.
(4) Except as required by paragraph (j)(2) of this AD: For
service information that contains steps that are labeled as Required
for Compliance (RC), the provisions of paragraphs (k)(4)(i) and
(k)(4)(ii) apply.
(i) The steps labeled as RC, including substeps under an RC step
and any figures identified in an RC step, must be done to comply
with the AD. An AMOC is required for any deviations to RC steps,
including substeps and identified figures.
(ii) Steps not labeled as RC may be deviated from using accepted
methods in accordance with the operator's maintenance or inspection
program without obtaining approval of an AMOC, provided the RC
steps, including substeps and identified figures, can still be done
as specified, and the airplane can be put back in an airworthy
condition.
Exact source excerpt. Text positions 24640–26732, end exclusive, in the original decoded publication. SHA-256: 5dedb98681fbdb7b182e848cfb048b0696e0254fc637f8416a950d43a5c9a1ca
Related Information
(l) Related Information
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].
Exact source excerpt. Text positions 26732–27034, end exclusive, in the original decoded publication. SHA-256: 9770f13057a009e484affd62e9d48940ce6d14f72f89b37efcbbef06fd41ba87
Material Incorporated by Reference
(m) 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 Alert Service Bulletin 747-53A2876, dated October 22,
2014.
(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, 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.
Exact source excerpt. Text positions 27034–28275, end exclusive, in the original decoded publication. SHA-256: 184256c7520b113abe9569f6af507d7d74e0c83a0f33e6267ee4df1dfc177d37
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 2016-04-18 · 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: c276a6c474695b669b11a657eac0310f7e3f4474fce55cc019fc0da347a6c089. Source manifest: 931d4ef1a90604dfe8bd7e4cf690f4f260a20f990e36f20399a9195a1163b82e.
Official source · 2016-03-01
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 81, Number 40 (Tuesday, March 1, 2016)]
[Rules and Regulations]
[Pages 10468-10472]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-03884]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2015-1270; Directorate Identifier 2014-NM-222-AD;
Amendment 39-18412; AD 2016-04-18]
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 747-100, -200B, -200C, -200F, -300, -400, -
400D, and -400F series airplanes. This AD was prompted by reports of
significant fuselage skin damage at certain parts of the dorsal
fairing, due to wear from the dorsal fairing. This AD requires
repetitive detailed inspections for wear and cracks of the fuselage
skin under the dorsal fairing, and related investigative and corrective
actions if necessary. This AD also requires repetitive post-repair
external surface high frequency eddy current inspections of the blended
areas of the skin and detailed inspections of the unrepaired areas, and
related investigative and corrective actions if necessary. We are
issuing this AD to detect and correct fuselage skin damage of the
dorsal fairing area, which could result in skin cracking and consequent
depressurization of the airplane.
DATES: This AD is effective April 5, 2016.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of April 5,
2016.
ADDRESSES: For service information identified in this final rule,
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. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-
1270.
[[Page 10469]]
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-
1270; 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 Docket 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 certain The Boeing Company
Model 747-100, -200B, -200C, -200F, -300, -400, -400D, and -400F series
airplanes. The NPRM published in the Federal Register on May 5, 2015
(80 FR 25627). The NPRM was prompted by reports of significant fuselage
skin damage at certain parts of the dorsal fairing, due to wear from
the dorsal fairing. The NPRM proposed to require repetitive detailed
inspections for wear and cracks of the fuselage skin under the dorsal
fairing, and related investigative and corrective actions if necessary.
The NPRM also proposed to require repetitive post-repair external
surface high frequency eddy current inspections of the blended areas of
the skin and detailed inspections of the unrepaired areas, and related
investigative and corrective actions if necessary. We are issuing this
AD to detect and correct fuselage skin damage of the dorsal fairing
area, which could result in skin cracking and consequent
depressurization of the airplane.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the NPRM (80
FR 25627, May 5, 2015) and the FAA's response to each comment.
Request To Clarify Exclusion of Certain Post-Modification Inspections
Boeing asked that we clarify paragraph (i) of the proposed AD (80
FR 25627, May 5, 2015). Boeing stated that paragraph (i) of the
proposed AD correctly states that post-modification inspections would
not be required by the AD, but the proposed AD does not clearly state
that those inspections are still required per operating rules, which
has caused confusion for operators in the past. Boeing suggested that
we revise the proposed AD to state that post-modification inspections
are already required by 14 CFR 121.1109(c)(2) and 14 CFR 129.109(b)(2).
We agree to clarify paragraph (i) of this AD. We have revised
paragraph (i) of this AD to clarify that the post-modification
inspections are airworthiness limitations that are required by
maintenance and operational rules; therefore, these inspections are not
required by this AD.
Request To Require Post-Modification Inspections Currently Excluded
United Airlines (UAL) asked that the post-modification inspections
excluded from the requirements of paragraph (i) of the proposed AD (80
FR 25627, May 5, 2015) instead be required. UAL stated that there is a
conflict between the proposed AD and tables 3, 6, and 7 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014. UAL noted that the post-modification
inspections specified in tables 3, 6, and 7 are not required in
paragraph (i) of the proposed AD; however, compliance tables 1 and 2 of
paragraph 1.E. of the service information instruct operators to
accomplish those post-modification inspections using tables 3, 6, and 7
of paragraph 1.E.
UAL added that Note 1 to paragraph (i) of the proposed AD (80 FR
25627, May 5, 2015) specifies that the post-modification inspections
may be used in support of compliance with section 121.1109(c)(2) or
129.109(b)(2) of the Federal Aviation Regulations (14 CFR
121.1109(c)(2) or 14 CFR 129.109(b)(2)). UAL pointed out that sections
121.1109(c)(2) and 129.109(b)(2) require operators to inspect damage-
tolerant reinforcing repairs to fatigue critical structures; however,
rub strips protect the skin from contact with the dorsal fairing and
are not considered a reinforcing repair.
We disagree with the commenter's request to require post-
modification inspections; however we acknowledge there is a conflict.
Paragraph (i) of this AD states that tables 3, 6, and 7 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014, specify post-modification airworthiness
limitation inspections in compliance to 14 CFR 25.571(a)(3) at the
modified locations, which support compliance with 14 CFR 121.1109(c)(2)
or 129.109(b)(2). These two regulations require damage-tolerance-based
inspections to be added as airworthiness limitations in order to
prevent the adverse effects of repairs, alterations, and modifications.
The rub strips are considered a modification to fatigue-critical
structure and meet the intent of section 121.1109(c)(2) or
129.109(b)(2) of the Federal Aviation Regulations. Where compliance
tables 1 and 2 of paragraph 1.E. of Boeing Alert Service Bulletin 747-
53A2876, dated October 22, 2014, instruct operators to accomplish post-
modification inspections using tables 3, 6, and 7 of paragraph 1.E.,
``Compliance,'' of the service information, those post-modification
inspections are not required by this AD. We have added a reference to
paragraph (i) of this AD in paragraphs (g) and (h) of this AD to
clarify tables 3, 6, and 7 of paragraph 1.E., ``Compliance,'' of the
service information are not required by paragraphs (g) and (h) of this
AD.
Request To Delete Certain Actions
UAL asked that we delete Options 1 and 2 of table 3 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014. UAL stated that Option 1 is for post-
modification of blend-out repairs without a rub strip installed, and
added that table 3 is for post-modification inspections for airplanes
with a rub strip previously installed. UAL added that the Option 2
blend-out repair is redundant information if the Option 1 action is
deleted.
We do not agree with the commenter's request. Paragraph (i) of this
AD specifies that table 3, as well as tables 6 and 7, are not required
by this AD. Therefore, no further change to the AD is necessary in this
regard.
Request To Add Certain Requirements
UAL asked that instructions be added to Part 3 of the Work
Instructions of Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014, to apply Teflon coating on top of the rub strips. UAL
stated that this will further enhance protection and will reduce wear
and cracking of the rub strip due to contact with the dorsal fairing.
We do not agree with the commenter's request. Boeing Alert Service
Bulletin 747-53A2876, dated October 22, 2014
[[Page 10470]]
(and the associated repairs and modifications), was coordinated with
the FAA before it was issued. This coordination included a damage-
tolerance analysis supporting the inspection thresholds and intervals
specified in the service information. Operators preferring to use a
method other than that specified in the referenced service information
may request approval for an alternative method of compliance (AMOC) and
provide supporting data, which, if approved, may be used instead of the
procedures specified in the service information. We have made no change
to the AD in this regard.
Request To Add Exception to the Proposed AD (80 FR 25627, May 5, 2015)
United Parcel Service (UPS) asked that we add another exception to
paragraph (j) of the proposed AD (80 FR 25627, May 5, 2015) to clarify
that Section 3.B., Part 6, sub-step 2, of Boeing Alert Service Bulletin
747-53A2876, dated October 22, 2014, is not required. UPS stated that
paragraph (g) of the proposed AD requires operators to perform
applicable related investigative and corrective actions, in accordance
with the Accomplishment Instructions of Boeing Alert Service Bulletin
747-53A2876, dated October 22, 2014. UPS added that there is an
inconsistency in those Accomplishment Instructions. UPS noted that
tables 2 and 3 of paragraph 1.E., ``Compliance,'' of Boeing Alert
Service Bulletin 747-53A2876, dated October 22, 2014, specify
performing the actions in Parts 6 and 7, and those sections include
instructions labeled ``Required for Compliance'' (RC). UPS stated that
performing the same action in both Parts 6 and 7 results in a
duplication of work. UPS added that it submitted a service request to
Boeing and asked for clarification on this duplication of work. UPS
stated that Boeing agreed that corrective actions could result in
duplication and that it would evaluate the steps in the Work
Instructions and clarify them as necessary.
We do not agree with the commenter's request. Boeing Alert Service
Bulletin 747-53A2876, dated October 22, 2014, specifies that if, during
the accomplishment of Part 6, obtaining the gap identified in Condition
6 is not possible, the operator must perform the actions associated
with Condition 7, including trimming and re-shimming the dorsal fin
fairing to obtain that gap by following the instructions in Part 7 of
Boeing Alert Service Bulletin 747-53A2876, dated October 22, 2014.
After this is done, the operator must re-measure, as specified in Part
7, to make sure the gap dimensions are correct. Following
accomplishment of Part 7, the operator must complete the actions in
Part 6 at the repetitive intervals specified in table 2 or table 3 of
paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-
53A2876, dated October 22, 2014 (table 2 is required by paragraph (g)
of this AD; table 3 specifies post-modification airworthiness
limitation inspections in compliance to 14 CFR 25.571(a)(3) at the
modified locations, which support compliance with 14 CFR 121.1109(c)(2)
or 129.109(b)(2)). In light of these facts, we have determined that
there is no duplication of work. We have not changed the AD in this
regard.
Change To the Proposed AD (80 FR 25627, May 5, 2015)
Paragraph (g) of this AD refers to initial and repetitive
inspections of the unrepaired structure. Paragraph (h) of this AD
refers to doing the inspections specified at the applicable times in
tables 4 and 5 of paragraph 1.E., ``Compliance,'' of Boeing Alert
Service Bulletin 747-53A2876, dated October 22, 2014. These tables
include compliance times for both the repaired and unrepaired areas.
The proposed AD (80 FR 25627, May 5, 2015) specified to require the
inspections in both paragraphs (g) and (h) of this AD, since there is
no terminating action identified in paragraph (h) of this AD. We have
determined that further clarification of these inspection requirements
is necessary. Therefore, we have added a sentence to paragraph (h) of
this AD clarifying that the inspections required by paragraph (h) of
this AD do not terminate the inspections required by paragraph (g) of
this AD.
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 (80 FR 25627, May 5, 2015) for correcting the unsafe condition;
and
<bullet> Do not add any additional burden upon the public than was
already proposed in the NPRM (80 FR 25627, May 5, 2015).
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.
Related Service Information Under 1 CFR Part 51
We reviewed Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014. This service information describes procedures for
repetitive inspections of the fuselage skin under the dorsal fairing,
the blended areas of the skin, and unrepaired areas, and related
investigative and corrective actions, if necessary. This service
information is reasonably available because the interested parties have
access to it through their normal course of business or by the means
identified in the ADDRESSES section.
Explanation of ``RC'' Steps in Service Information
The FAA worked in conjunction with industry, under the
Airworthiness Directive Implementation Aviation Rulemaking Committee
(ARC), to enhance the AD system. One enhancement was a new process for
annotating which steps in the service information are required for
compliance with an AD. Differentiating these steps from other tasks in
the service information is expected to improve an owner's/operator's
understanding of crucial AD requirements and help provide consistent
judgment in AD compliance. The steps identified as Required for
Compliance (RC) in any service information identified previously have a
direct effect on detecting, preventing, resolving, or eliminating an
identified unsafe condition.
For service information that contains steps that are labeled as RC,
the following provisions apply: (1) The steps labeled as RC, including
substeps under an RC step and any figures identified in an RC step,
must be done to comply with the AD, and an AMOC is required for any
deviations to RC steps, including substeps and identified figures; and
(2) steps not labeled as RC may be deviated from using accepted methods
in accordance with the operator's maintenance or inspection program
without obtaining approval of an AMOC, provided the RC steps, including
substeps and identified figures, can still be done as specified, and
the airplane can be put back in an airworthy condition.
Costs of Compliance
We estimate that this AD affects 93 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
[[Page 10471]]
Estimated costs
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Inspections............... Up to 15 work-hours x $0 Up to $1,275 per Up to $118,575 per
$85 per hour = inspection cycle. inspection cycle.
$1,275.
----------------------------------------------------------------------------------------------------------------
We have received no definitive data that will 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
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):
2016-04-18 The Boeing Company: Amendment 39-18412 ; Docket No. FAA-
2015-1270; Directorate Identifier 2014-NM-222-AD.
(a) Effective Date
This AD is effective April 5, 2016.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 747-100, -200B, -
200C, -200F, -300, -400, -400D, and -400F series airplanes;
certificated in any category, as identified in Boeing Alert Service
Bulletin 747-53A2876, dated October 22, 2014.
(d) Subject
Air Transport Association (ATA) of America Code 53, Fuselage.
(e) Unsafe Condition
This AD was prompted by reports of significant fuselage skin
damage at the dorsal fairing forward of station (STA) 2280 due to
wear from the dorsal fairing. We are issuing this AD to detect and
correct fuselage skin damage of the dorsal fairing area, which could
result in skin cracking and consequent depressurization of the
airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspections and Repair
At the applicable time specified in tables 1 and 2 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014, except as provided by paragraph (j)(1) of
this AD, do a detailed inspection of the fuselage skin under the
dorsal fairing for wear or cracks, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
53A2876, dated October 22, 2014, except as provided by paragraph (i)
of this AD and except as required by paragraph (j)(2) of this AD. Do
all applicable related investigative and corrective actions at the
time specified in paragraph 1.E., ``Compliance,'' of Boeing Alert
Service Bulletin 747-53A2876, dated October 22, 2014. Repeat the
applicable inspections of the fuselage skin thereafter at the
applicable times specified in paragraph 1.E., ``Compliance,'' of
Boeing Alert Service Bulletin 747-53A2876, dated October 22, 2014.
(h) Post-Repair Inspections
At the applicable time specified in tables 4 and 5 of paragraph
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876,
dated October 22, 2014, except as provided by paragraph (j)(1) of
this AD, do an external surface high frequency eddy current
inspection of the blended areas of the skin and a detailed
inspection of the unrepaired areas, and do all applicable related
investigative and corrective actions, in accordance with Part 8 of
the Accomplishment Instructions of Boeing Alert Service Bulletin
747-53A2876, dated October 22, 2014, except as provided by paragraph
(i) of this AD and except as required by paragraph (j)(2) of this
AD. Do all applicable related investigative and corrective actions
at the time specified in paragraph 1.E., ``Compliance,'' of Boeing
Alert Service Bulletin 747-53A2876, dated October 22, 2014. Repeat
the applicable inspections of the blended areas of the skin
thereafter at the applicable times specified in paragraph 1.E.,
``Compliance,'' of Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014. Accomplishing the inspections required by this
paragraph does not terminate the inspections required by paragraph
(g) of this AD.
(i) Post-Modification Inspections
Tables 3, 6, and 7 of paragraph 1.E., ``Compliance,'' of Boeing
Alert Service Bulletin 747-53A2876, dated October 22, 2014, specify
post-modification airworthiness limitation inspections in compliance
to 14 CFR 25.571(a)(3) at the modified locations, which support
compliance with 14 CFR 121.1109(c)(2) or 129.109(b)(2). As
airworthiness limitations, these inspections are required by
maintenance and operational rules. It is therefore unnecessary to
mandate them in this AD. Deviations from these inspections require
FAA approval, but do not require an alternative method of
compliance.
(j) Exceptions to Service Information Specifications
(1) Where Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014, specifies a compliance time ``after the
[[Page 10472]]
Original Issue date of this service bulletin,'' this AD requires
compliance within the specified compliance time after the effective
date of this AD.
(2) Although Boeing Alert Service Bulletin 747-53A2876, dated
October 22, 2014, specifies to contact Boeing for repair data, and
specifies that action as ``RC'' (Required for Compliance), this AD
requires repair before further flight using a method approved in
accordance with the procedures specified in paragraph (k) of this
AD.
(k) 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 (l)(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, modification, or alteration 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. To be approved, the
repair method, modification deviation, or alteration deviation must
meet the certification basis of the airplane, and the approval must
specifically refer to this AD.
(4) Except as required by paragraph (j)(2) of this AD: For
service information that contains steps that are labeled as Required
for Compliance (RC), the provisions of paragraphs (k)(4)(i) and
(k)(4)(ii) apply.
(i) The steps labeled as RC, including substeps under an RC step
and any figures identified in an RC step, must be done to comply
with the AD. An AMOC is required for any deviations to RC steps,
including substeps and identified figures.
(ii) Steps not labeled as RC may be deviated from using accepted
methods in accordance with the operator's maintenance or inspection
program without obtaining approval of an AMOC, provided the RC
steps, including substeps and identified figures, can still be done
as specified, and the airplane can be put back in an airworthy
condition.
(l) Related Information
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].
(m) 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 Alert Service Bulletin 747-53A2876, dated October 22,
2014.
(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, 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, Washington, on February 15, 2016.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2016-03884 Filed 2-29-16; 8:45 am]
BILLING CODE 4910-13-P
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