AD 2013-02-07
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-600 Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 737-700 Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 737-700C Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 737-800 Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 737-900 Series | Airworthiness Directives; The Boeing Company Airplanes |
| aircraft | The Boeing Company | 737-900ER Series | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Center overhead stowage (COS) boxes could fall from their supports under forward load levels less than the 9 g forward load requirements as defined by certain regulations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify COS boxes by installing new brackets, stiffeners, and hardware as needed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 60 months of the effective date (March 6, 2013).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD was prompted by reports from the manufacturer that center overhead stowage (COS) boxes could fall from their supports under forward load levels less than the 9 g forward load requirements as defined by certain regulations. This AD requires modifying COS boxes by installing new brackets, stiffeners, and hardware as needed. We are issuing this AD to prevent detachment of COS boxes at forward load levels less than 9 g during an emergency landing, which would cause injury to passengers and/or crew, and could impede subsequent rapid evacuation.
Applicability Source Text
Show captured applicability text from the source AD
(c) Applicability
This AD applies to The Boeing Company Model 737-600, -700, -
700C, -800, -900, and -900ER series airplanes, certificated in any
category, as identified in Boeing Special Attention Service Bulletin
737-25-1641, Revision 1, dated August 8, 2011, as revised by Boeing
Special Attention Service Bulletin 737-25-1641, Revision 2, dated
November 20, 2012.
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 78, Number 20 (Wednesday, January 30, 2013)]
[Rules and Regulations]
[Pages 6200-6202]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2013-01718]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2012-0183; Directorate Identifier 2011-NM-131-AD;
Amendment 39-17328; AD 2013-02-07]
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 737-600, -700, -700C, -800, -900, and -900ER
series airplanes. This AD was prompted by reports from the manufacturer
that center overhead stowage (COS) boxes could fall from their supports
under forward load levels less than the 9 g forward load requirements
as defined by certain regulations. This AD requires modifying COS boxes
by installing new brackets, stiffeners, and hardware as needed. We are
issuing this AD to prevent detachment of COS boxes at forward load
levels less than 9 g during an emergency landing, which would cause
injury to passengers and/or crew, and could impede subsequent rapid
evacuation.
DATES: This AD is effective March 6, 2013.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of March 6,
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 <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>. 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.
Examining the AD Docket
You may examine the AD docket on the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a>; 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: Sarah Piccola, Aerospace Engineer,
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle
ACO, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6483;
fax: 425-917-6590; email: <a href="/cdn-cgi/l/email-protection#b5c6d4c7d4dd9bc5dcd6d6dad9d4f5d3d4d49bd2dac3"><span class="__cf_email__" data-cfemail="c0b3a1b2a1a8eeb0a9a3a3afaca180a6a1a1eea7afb6">[email protected]</span></a>.
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.
That NPRM published in the Federal Register on February 27, 2012 (77 FR
11416). That NPRM proposed to require modifying COS boxes by installing
new brackets, stiffeners, and hardware as needed.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the proposal
(77 FR 11416, February 27, 2012) and the FAA's response to each
comment. United Airlines and two private citizens support the NPRM.
Aviation Partners Boeing stated that the installation of winglets per
Supplemental Type Certificate (STC) ST00830SE does not affect the
actions specified in the NPRM or Boeing Special Attention Service
Bulletin 737-25-1641, Revision 1, dated August 8, 2011.
Request To Revise the Compliance Time
American Airlines requested that we extend the compliance time in
the NPRM (77 FR 11416, February 27, 2012) from 60 months to 72 months
to align with the heavy maintenance program driven by the Model 737
Maintenance Review Board.
We do not agree with extending the compliance time to 72 months,
because an operator has experienced an event where the COS box did not
remain fully attached. An increase in compliance time is not in the
interest of public safety. We have not changed the final rule regarding
this issue. In developing an appropriate compliance time for this
action, we considered the safety implications, parts availability, and
normal maintenance schedules for the timely accomplishment of the
modification. In consideration of these items, as well as the reports
where the COS box did not remain fully attached, we have determined
that a 60-month compliance time will ensure an acceptable level of
safety and allow the modifications to be done during scheduled
maintenance intervals for most affected operators. We have not changed
the AD in this regard.
Request To Revise Language
Boeing requested that we clarify the language of the NPRM (77 FR
11416, February 27, 2012) and replace the words ``other products of
this same type design'' in the paragraph ``FAA's Determination,'' with
the words ``the Boeing 737 Next Generation (737NG) airplane prior to L/
N 3518 excluding Boeing Sky Interior (BSI).'' Boeing considered the
existing language too general and confusing for operators.
We disagree with changing the AD. This standard language contained
under ``FAA's Determination'' is in all proposed airworthiness
directives to show adherence to Part 39 of the Federal Aviation
Regulations (14 CFR 39), and is not restated in the final rule.
Request To Revise Maximum Load
Arkefly Airlines suggested that Boeing give the option to reduce
the maximum load to a load that would meet the 9 g requirement without
modification. The commenter suggested this could be incorporated by
installing a placard with the new (reduced) maximum load.
We disagree because the customer COS box configuration has already
been taken into account. This AD addresses optional COS boxes. These
boxes typically contain life rafts, palletized equipment, or
miscellaneous equipment. Boeing based its original
[[Page 6201]]
design on the customer configurations and has determined that the
design does not meet the 9 g load requirement. We have not changed the
AD in this regard.
Actions Since Previous NPRM (77 FR 11416, February 27, 2012) Was Issued
The previous NPRM (77 FR 11416, February 27, 2012) referred to
Boeing Special Attention Service Bulletin 737-25-1641, Revision 1,
dated August 8, 2011, as the appropriate source of service information
for accomplishing the required actions. Since we issued the previous
NPRM, we have reviewed Boeing Special Attention Service Bulletin 737-
25-1641, Revision 2, dated November 20, 2012, which made minor changes
to part numbering of materials; added no additional work required by
Boeing Special Attention Service Bulletin 737-25-1641, Revision 1,
dated August 8, 2011; and both added and deleted airplanes from Group 2
airplanes. The added airplanes are not in the U.S. registry. We revised
paragraphs (c) and (g) of this AD to refer to Boeing Special Attention
Service Bulletin 737-25-1641, Revision 2, dated November 20, 2012, and
revised paragraph (h) to give credit for work performed before the
effective date of the AD using Boeing Special Attention Service
Bulletin 737-25-1641, Revision 1, dated August 8, 2011.
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
the 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 (77 FR 11416, February 27, 2012) for correcting the unsafe
condition; and
<bullet> Do not add any additional burden upon the public than was
already proposed in the NPRM (77 FR 11416, February 27, 2012).
Costs of Compliance
We estimate that this AD affects 526 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
----------------------------------------------------------------------------------------------------------------
Modification...................... 31 work-hours x $85 per $6,118 $8,753 $4,604,078
hour = $2,635.
----------------------------------------------------------------------------------------------------------------
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 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):
2013-02-07 The Boeing Company: Amendment 39-17328; Docket No.
FAA-2012-0183; Directorate Identifier 2011-NM-131-AD.
(a) Effective Date
This AD is effective March 6, 2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 737-600, -700, -
700C, -800, -900, and -900ER series airplanes, certificated in any
category, as identified in Boeing Special Attention Service Bulletin
737-25-1641, Revision 1, dated August 8, 2011, as revised by Boeing
Special Attention Service Bulletin 737-25-1641, Revision 2, dated
November 20, 2012.
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 25: Equipment/Furnishings.
(e) Unsafe Condition
This AD was prompted by reports from the manufacturer that
center overhead stowage (COS) boxes could fall from their supports
under forward load levels less than the 9 g forward load
requirements as defined by Federal Aviation Regulations. We are
issuing this AD to prevent detachment of COS boxes at forward load
levels less than 9 g during an emergency landing, which would cause
injury to passengers and/or crew, and could impede subsequent rapid
evacuation.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
[[Page 6202]]
(g) Modification and Installation of COS Boxes
Within 60 months after the effective date of this AD, modify the
COS boxes in accordance with the Accomplishment Instructions of
Boeing Special Attention Service Bulletin 737-25-1641, Revision 2,
dated November 20, 2012.
(h) Credit for Previous Actions
This paragraph provides credit for the modification required by
paragraph (g) of this AD, if the modification was performed before
the effective date of this AD using Boeing Special Attention Service
Bulletin 737-25-1641, dated May 13, 2011, which is not incorporated
by reference in this AD; or Boeing Special Attention Service
Bulletin 737-25-1641, Revision 1, dated August 8, 2011.
(i) 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 the Related Information
section of this AD. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#87beaac6c9caaad4e2e6f3f3ebe2aac6c4c8aac6cac8c4aad5e2f6f2e2f4f3f4c7e1e6e6a9e0e8f1"><span class="__cf_email__" data-cfemail="566f7b17181b7b05333722223a337b1715197b171b19157b04332723332522251630373778313920">[email protected]</span></a>.
(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 Aircraft
Certification Office, to make those findings.
(j) Related Information
(1) For more information about this AD, contact Sarah Piccola,
Aerospace Engineer, Cabin Safety and Environmental Systems Branch,
ANM-150S, FAA, Seattle ACO, 1601 Lind Avenue SW., Renton, WA 98057-
3356; phone: 425-917-6483; fax: 425-917-6590; email:
<a href="/cdn-cgi/l/email-protection#9fecfeedfef7b1eff6fcfcf0f3fedff9fefeb1f8f0e9"><span class="__cf_email__" data-cfemail="9deefceffcf5b3edf4fefef2f1fcddfbfcfcb3faf2eb">[email protected]</span></a>.
(2) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone
206-544-5000, extension 1; fax 206-766-5680; Internet <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
(k) 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 Special Attention Service Bulletin 737-25-1641,
Revision 1, dated August 8, 2011.
(ii) Boeing Special Attention Service Bulletin 737-25-1641,
Revision 2, dated November 20, 2012.
(3) For The Boeing Company 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 <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
(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: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">http://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued in Renton, Washington, on January 18, 2013.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-01718 Filed 1-29-13; 8:45 am]
BILLING CODE 4910-13-P
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Retrieved: Apr 6, 2026
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