[Federal Register Volume 78, Number 233 (Wednesday, December 4, 2013)]
[Proposed Rules]
[Pages 72836-72838]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-29004]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0977; Directorate Identifier 2013-NM-190-AD]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for all
The Boeing Company Model 717-200 airplanes. This proposed AD was
prompted by multiple reports of cracking in the overwing frames. This
proposed AD would require repetitive inspections for cracking in the
overwing frames, and corrective actions if necessary. We are proposing
this AD to detect and correct such cracking, which could result in a
severed frame and might increase the loading of adjacent frames,
resulting in damage to the adjacent structure and consequent loss of
structural integrity of the airplane.
DATES: We must receive comments on this proposed AD by January 21,
2014.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
3855 Lakewood Boulevard, MC D800-0019, Long Beach, CA 90846-0001;
telephone 206-544-5000, extension 2; fax 206-766-5683; Internet https://www.myboeingfleet.com. You may view this referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, WA. For information on the availability of this
material at the FAA, call 425-227-1221.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (phone: 800-647-5527) is in the ADDRESSES
section. Comments will be available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT: Eric Schrieber, Aerospace Engineer,
Airframe Branch, ANM-120L, Los Angeles Aircraft Certification Office
(ACO), FAA, 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone:
562-627-5348; fax: 562-627-5210; email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2013-0977;
Directorate Identifier 2013-NM-190-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.
We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
We received multiple reports of cracking in the overwing frames on
Boeing Model 717 airplanes. The airplanes had accumulated between
18,235 and 36,208 total flight hours, and between 11,991 and 45,091
total flight cycles. The cracks, caused by fatigue, originated in the
upper radius of the frame inboard tab just below the floor. This
condition, if not corrected, could result in a severed frame, which
might increase the loading of adjacent frames and result in damage to
the adjacent structure and consequent loss of structural integrity of
the airplane.
Relevant Service Information
We reviewed Boeing Alert Service Bulletin 717-53A0036, dated August
12, 2013. For information on the procedures and compliance times, see
this service information at http://regulations.gov by searching for
Docket No. FAA-2013-0977.
FAA's Determination
We are proposing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of the same type design.
Proposed AD Requirements
This proposed AD would require accomplishing the actions specified
in the service information described previously, except as discussed
under ``Differences Between this Proposed AD and the Service
Information.''
The FAA worked in conjunction with industry, under the
Airworthiness Directives Implementation Aviation Rulemaking Committee,
to enhance the AD system. One enhancement was a new process for
annotating which steps in the service information are required
[[Page 72837]]
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 actions specified in the service
information described previously include steps that are labeled as RC
(required for compliance) because these steps have a direct effect on
detecting, preventing, resolving, or eliminating an identified unsafe
condition.
As noted in the specified service information, steps labeled as RC
must be done to comply with the proposed AD. However, steps that are
not labeled as RC are recommended. Those steps that are not labeled as
RC may be deviated from, done as part of other actions, or done using
accepted methods different from those identified in the service
information without obtaining approval of an alternative method of
compliance (AMOC), provided the steps labeled as RC can be done and the
airplane can be put back in a serviceable condition. Any substitutions
or changes to steps labeled as RC will require approval of an AMOC.
The phrase ``corrective actions'' is used in this proposed AD.
``Corrective actions'' are actions that correct or address any
condition found. Corrective actions in an AD could include, for
example, repairs.
Differences Between This Proposed AD and the Service Information
The service bulletin specifies to contact the manufacturer for
instructions on how to repair certain conditions, but this proposed AD
would require repairing those conditions in one of the following ways:
In accordance with a method that we approve; or
Using data that meet the certification basis of the
airplane, and that have been approved by the Boeing Commercial
Airplanes Organization Designation Authorization (ODA) whom we have
authorized to make those findings.
Costs of Compliance
We estimate that this proposed AD affects 129 airplanes of U.S.
registry.
We estimate the following costs to comply with this proposed AD:
Estimated Costs
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Cost on U.S.
Action Labor cost Parts cost Cost per product operators
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Inspections.................... 22 work-hours x $85 per $0 $1,870 per $241,230 per
hour = $1,870 per inspection cycle. inspection
inspection cycle. cycle.
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We estimate the following costs to do any necessary replacements
that would be required based on the results of the proposed
inspections. We have no way of determining the number of aircraft that
might need these replacements:
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
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Replacement of a frame station............... 126 work-hours x $85 per hour = $83,060 $93,770
$10,710.
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In addition, for the on-condition repairs specified in this
proposed AD, we have received no definitive data that would enable us
to provide cost estimates.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
We determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Is not a ``significant rule'' under the 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.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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):
The Boeing Company: Docket No. FAA-2013-0977; Directorate Identifier
2013-NM-190-AD.
(a) Comments Due Date
We must receive comments by January 21, 2014.
[[Page 72838]]
(b) Affected Ads
None.
(c) Applicability
This AD applies to all The Boeing Company Model 717-200
airplanes, certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 53, Fuselage.
(e) Unsafe Condition
This AD was prompted by multiple reports of cracking in the
overwing frames. We are issuing this AD to detect and correct such
cracking, which could result in a severed frame and might increase
the loading of adjacent frames, resulting in damage to the adjacent
structure and consequent loss of structural integrity of the
airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspections and Corrective Actions
At the applicable time specified in paragraph (g)(1) or (g)(2)
of this AD, do a general visual inspection and a high frequency eddy
current (HFEC) inspection for cracking of the left-side and right-
side overwing frames at station 737, and do all applicable
corrective actions, in accordance with the Accomplishment
Instructions of Boeing Alert Service Bulletin 717-53A0036, dated
August 12, 2013, except as required by paragraph (h)(3) of this AD.
Do all applicable corrective actions before further flight. Except
as required by paragraph (h)(2) of this AD, repeat the inspections
thereafter at the applicable time specified in paragraph 1.E.,
``Compliance,'' of Boeing Alert Service Bulletin 717-53A0036, dated
August 12, 2013.
(1) For Group 1, Configuration 1 airplanes identified in Boeing
Alert Service Bulletin 717-53A0036, dated August 12, 2013: At the
time specified in table 1 of paragraph 1.E., ``Compliance,'' of
Boeing Alert Service Bulletin 717-53A0036, dated August 12, 2013,
except as provided by paragraph (h)(1) of this AD.
(2) For Group 1, Configuration 2 airplanes identified in Boeing
Alert Service Bulletin 717-53A0036, dated August 12, 2013: At the
applicable time specified in paragraph (g)(2)(i) or (g)(2)(ii) of
this AD.
(i) For airplanes on which the overwing frame has not been
replaced: Within 9,300 flight cycles after accomplishing the
inspections specified in Boeing Multi Operator Message (MOM) MOM-
MOM-13-0375-01B, dated May 9, 2013.
(ii) For airplanes on which the overwing frame has been
replaced: Within 12,000 flight cycles after replacing the frame.
(h) Exceptions to Service Information
(1) Where Boeing Alert Service Bulletin 717-53A0036, dated
August 12, 2013, specifies a compliance time ``after the original
issue date of this service bulletin,'' this AD requires compliance
within the specified compliance time after the effective date of
this AD.
(2) Where Boeing Alert Service Bulletin 717-53A0036, dated
August 12, 2013, specifies to contact Boeing for the compliance time
of an inspection repetitive interval, this AD requires a compliance
time approved by the FAA in accordance with the procedures specified
in paragraph (j) of this AD.
(3) Where Boeing Alert Service Bulletin 717-53A0036, dated
August 12, 2013, specifies to contact Boeing for repair
instructions, this AD requires repair before further flight using a
method approved in accordance with the procedures specified in
paragraph (j) of this AD.
(i) Credit for Previous Actions
This paragraph provides credit for only the initial general
visual inspection, HFEC inspection, and frame replacement required
by paragraph (g) of this AD, if those actions were performed before
the effective date of this AD using Boeing Multi Operator Message
(MOM) MOM-MOM-13-0375-01B, dated May 9, 2013.
(j) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Los Angeles 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 (k) of this AD.
(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, Los Angeles ACO, to
make those findings. For a repair method to be approved, the repair
must meet the certification basis of the airplane and 14 CFR 25.571,
Amendment 45, and the approval must specifically refer to this AD.
(4) If the service information contains steps that are labeled
as RC (Required for Compliance), those steps must be done to comply
with this AD; any steps that are not labeled as RC are recommended.
Those steps that are not labeled as RC may be deviated from, done as
part of other actions, or done using accepted methods different from
those identified in the specified service information without
obtaining approval of an AMOC, provided the steps labeled as RC can
be done and the airplane can be put back in a serviceable condition.
Any substitutions or changes to steps labeled as RC require approval
of an AMOC.
(k) Related Information
(1) For more information about this AD, contact: Eric Schrieber,
Aerospace Engineer, Airframe Branch, ANM-120L, Los Angeles ACO, FAA,
3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-
5348; fax: 562-627-5210; email: [email protected].
(2) For service information identified in this AD, Boeing
Commercial Airplanes, Attention: Data & Services Management, 3855
Lakewood Boulevard, MC D800-0019, Long Beach, CA 90846-0001;
telephone 206-544-5000, extension 2; fax 206-766-5683; Internet
https://www.myboeingfleet.com.
Issued in Renton, Washington, on November 26, 2013.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-29004 Filed 12-3-13; 8:45 am]
BILLING CODE 4910-13-P