Airworthiness Directives; The Boeing Company Airplanes, 37676-37678 [2014-14799]

Download as PDF wreier-aviles on DSK5TPTVN1PROD with PROPOSALS 37676 Federal Register / Vol. 79, No. 127 / Wednesday, July 2, 2014 / Proposed Rules after operation of the high speed warning system by application of a load of 1.5g (0.5 acceleration increment), or such greater load factor that is automatically applied by the system with the pilot’s pitch control neutral. Power may be reduced simultaneously. All other means of decelerating the airplane, the use of which is authorized up to the highest speed reached in the maneuver, may be used. The interval between successive pilot actions must not be less than one second. 2. The applicant must also demonstrate that the speed margin, established as above, will not be exceeded in inadvertent or gust-induced upsets resulting in initiation of the dive from non-symmetric attitudes, unless the airplane is protected by the flight control laws from getting into nonsymmetric upset conditions. The upset maneuvers described in Advisory Circular 25–7C, Flight Test Guide for Certification of Transport Category Airplanes, section 8, paragraph 32, subparagraphs c(3)(a) and (b) may be used to comply with this requirement. 3. The probability of any failure of the high speed protection system that would result in an airspeed exceeding those determined by paragraphs 1 and 2 must be less than 10¥5 per flight hour. 4. Failures of the system must be annunciated to the pilots. Flight manual instructions must be provided that reduce the maximum operating speeds, VMO/MMO. With the system failed, the operating speed must be reduced to a value that maintains a speed margin between VMO/MMO and VD/MD that is consistent with showing compliance with § 25.335(b) without the benefit of the high speed protection system. 5. Dispatch of the airplane with the high speed protection system inoperative could be allowed under an approved MEL that would require flight manual instructions to indicate reduced maximum operating speeds, as described in paragraph (4). In addition, the cockpit display of the reduced operating speeds, as well as the overspeed warning for exceeding those speeds, must be equivalent to that of the normal airplane with the high speed protection system operative. Also, it must be shown that no additional hazards are introduced with the high speed protection system inoperative. Issued in Renton, Washington, on June 17, 2014. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2014–15539 Filed 7–1–14; 8:45 am] BILLING CODE 4910–13–P VerDate Mar<15>2010 14:15 Jul 01, 2014 Jkt 232001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2014–0344; Directorate Identifier 2014–NM–034–AD] RIN 2120–AA64 Examining the AD Docket Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to supersede Airworthiness Directive (AD) 2013–24– 13, which applies to certain The Boeing Company Model 737–100, –200, –200C, –300, –400, –500, –600, –700, –700C, –800, and –900 series airplanes. AD 2013–24–13 currently requires replacing the pivot link assembly for certain airplanes, replacing the seat track link assemblies or modifying the existing seat track link assembly for certain airplanes, or modifying the existing seat track link assembly fastener for certain airplanes. AD 2013–24–13 also requires inspecting, changing, or repairing the seat track link assembly for certain other airplanes. Since we issued AD 2013–24– 13, a paragraph reference was found to be mis-identified. This proposed AD would correct this paragraph reference. We are proposing this AD to prevent seat detachment in an emergency landing, which could cause injury to occupants of the passenger compartment and affect emergency egress. SUMMARY: We must receive comments on this proposed AD by August 18, 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 https://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, P.O. Box 3707, MC 2H–65, Seattle, WA 98124–2207; telephone 206–544–5000, extension 1; DATES: PO 00000 Frm 00007 Fmt 4702 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. Sfmt 4702 You may examine the AD docket on the Internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2014– 0344; 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: Sarah Piccola, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM–150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917–6483; fax: 425–917–6590; email: sarah.piccola@ faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2014–0344; Directorate Identifier 2014–NM–034–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 https:// 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 On November 19, 2013, we issued AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), for certain The Boeing Company Model 737–100, –200, –200C, –300, –400, –500, –600, –700, –700C, –800, and –900 series E:\FR\FM\02JYP1.SGM 02JYP1 37677 Federal Register / Vol. 79, No. 127 / Wednesday, July 2, 2014 / Proposed Rules airplanes. AD 2013–24–13 requires replacing the pivot link assembly for certain airplanes, replacing the seat track link assemblies or modifying the existing seat track link assembly for certain airplanes, or modifying the existing seat track link assembly fastener for certain airplanes. AD 2013– 24–13 also requires inspecting, changing, or repairing the seat track link assembly for certain other airplanes. AD 2013–24–13 resulted from a report that the seat track attachment of body station 520 flexible joint is structurally deficient in resisting a 9g forward emergency load condition in certain seating configurations. We issued AD 2013–24–13 to prevent seat detachment in an emergency landing, which could cause injury to occupants of the passenger compartment and affect emergency egress. Actions Since AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013) Was Issued Since we issued AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), a paragraph reference was found to be mis-identified in paragraph (i) of that AD. Paragraph (i) of AD 2013–24–13 states that before or concurrently with the accomplishment of the actions specified in paragraph (g)(2) or (g)(3) of this AD, install a new seat track link assembly. Where paragraph (i) of AD 2013–24–13 referred to paragraph (g)(3) of that AD, this AD refers to paragraph (g)(4) of this AD. We have also revised the terminology of the Summary and Discussion sections of this AD to clarify the actions required by this AD. 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 retain all requirements of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013). This proposed AD would revise the second sentence of paragraph (i) of this proposed AD to replace the reference to paragraph (g)(3) with reference to paragraph (g)(4) of this proposed AD. Costs of Compliance We estimate that this proposed AD affects 1,281 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Action Labor cost Parts cost Cost per product Replacement or modification [retained actions from AD 2013– 24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013)]. Concurrent installation or modification (Groups 1, 2, 4, and 5 airplanes) [retained actions from AD 2013-24-13, Amendment 39–17687 (78 FR 72558, December 3, 2013)] 1. Up to 41 work-hours × $85 per hour = $3,485. Up to $15,478 .. Up to $18,963 .. 1,281 Up to 60 work-hours × $85 per hour = $5,100. Up to $18,089 .. Up to $23,189 .. 214 U.S. airplanes Cost on U.S. operators Up to $24,291,603. Up to $4,962,446. 1 We have received no definitive data that would enable us to provide a cost estimate for the actions required for airplanes in Group 6 identified in Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013. products identified in this rulemaking action. Authority for This Rulemaking wreier-aviles on DSK5TPTVN1PROD with PROPOSALS This new proposed AD adds no new costs to affected operators. Regulatory Findings 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 We have 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 that the 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 VerDate Mar<15>2010 14:15 Jul 01, 2014 Jkt 232001 PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 (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 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. E:\FR\FM\02JYP1.SGM 02JYP1 37678 § 39.13 Federal Register / Vol. 79, No. 127 / Wednesday, July 2, 2014 / Proposed Rules [Amended] 2. The FAA amends § 39.13 by removing Airworthiness Directive (AD) 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), and adding the following new AD: ■ The Boeing Company: Docket No. FAA– 2014–0344; Directorate Identifier 2014– NM–034–AD. (a) Comments Due Date The FAA must receive comments on this AD action by August 18, 2014. (b) Affected ADs This AD supersedes AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013). (c) Applicability This AD applies to the airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category. (1) The Boeing Company Model 737–100, –200, –200C, –300, –400, and –500 series airplanes, as identified in Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013. (2) The Boeing Company Model 737–600, –700, –700C, –800, and –900 series airplanes, as identified in Boeing Service Bulletin 737– 53–1244, Revision 5, dated July 27, 2011. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Unsafe Condition This AD was prompted by a report that a Boeing study found that the seat track attachment of body station 520 flexible joint is structurally deficient in resisting a 9g forward emergency load condition in certain seating configurations. We are issuing this AD to prevent seat detachment in an emergency landing, which could cause injury to occupants of the passenger compartment and affect emergency egress. wreier-aviles on DSK5TPTVN1PROD with PROPOSALS (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Repair or Replacement of Seat Track Link Assembly or Seat Track Link Assembly Fastener, With No Changes This paragraph restates the requirements of paragraph (g) of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), with no changes. Within 60 months after January 7, 2014 (the effective date of AD 2013–24–13), do the actions specified in paragraph (g)(1), (g)(2), (g)(3), or (g)(4) of this AD, as applicable. (1) For Model 737–600, –700, –700C, –800, and –900 series airplanes: Install new, improved pivot link assemblies, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 737– 53–1244, Revision 5, dated July 27, 2011. (2) For airplanes in Groups 1, 2, 3, and 4, as identified in Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013: Replace the seat track link assembly, in accordance with the VerDate Mar<15>2010 14:15 Jul 01, 2014 Jkt 232001 Accomplishment Instructions of Boeing Special Attention Service Bulletin 737–53– 1260, Revision 1, dated May 23, 2013. (3) For airplanes in Group 6, as identified in Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013: Inspect, change, or repair the seat track link assembly, as applicable, using a method approved in accordance with the procedures specified in paragraph (k) of this AD. (4) For airplanes in Group 5, as identified in Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013: Modify the existing seat track link assembly fastener, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737–53– 1260, Revision 1, dated May 23, 2013. (h) Retained Optional Modification of Seat Track Link Assembly, With No Changes This paragraph restates the provisions of paragraph (h) of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), with no changes. In lieu of the replacement specified in paragraph (g)(2) of this AD, doing the optional modification of the seat track link assembly, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013, is acceptable for compliance with the requirements of paragraph (g)(2) of this AD, provided the modification is done within the compliance time specified in the introductory text of paragraph (g) of this AD. (i) Retained Concurrent Actions, With New Concurrent Action for Group 5 Airplanes This paragraph restates the requirements of paragraph (i) of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), with a corrected paragraph reference that results in a new concurrent action for Group 5 airplanes. For airplanes in Groups 1, 2, 4, and 5, as identified in Boeing Special Attention Service Bulletin 737–53–1260, Revision 1, dated May 23, 2013: Before or concurrently with the accomplishment of the actions specified in paragraph (g)(2) or (g)(4) of this AD, install a new seat track link assembly or modify the seat track link assembly, as applicable, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 737–53–1120, Revision 1, dated May 13, 1993. (j) Retained Credit for Previous Actions With No Changes This paragraph restates the credit specified in paragraph (j) of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013), with no changes. (1) This paragraph provides credit for the actions required by paragraph (g)(1) of this AD, if those actions were performed before January 7, 2014 (the effective date of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013)), using Boeing Service Bulletin 737–53–1244, dated April 17, 2003; Revision 1, dated May 29, 2003; Revision 2, dated March 15, 2007; or Revision 3, dated December 4, 2008; which are not incorporated by reference in this AD. (2) This paragraph provides credit for the actions required by paragraphs (g)(2) and PO 00000 Frm 00009 Fmt 4702 Sfmt 9990 (g)(4) of this AD, if those actions were performed before January 7, 2014 (the effective date of AD 2013–24–13, Amendment 39–17687 (78 FR 72558, December 3, 2013)), using Boeing Special Attention Service Bulletin 737–53–1260, dated May 7, 2007, which is not incorporated by reference in 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) of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOCRequests@faa.gov. (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 14 CFR 25.571, Amendment 45, and the approval must specifically refer to this AD. (l) Related Information (1) For more information about this AD, contact Sarah Piccola, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM–150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917– 6483; fax: 425–917–6590; email: sarah.piccola@faa.gov. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H–65, Seattle, WA 98124–2207; telephone 206– 544–5000, extension 1; fax 206–766–5680; Internet https://www.myboeingfleet.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. Issued in Renton, Washington, on June 18, 2014. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2014–14799 Filed 7–1–14; 8:45 am] BILLING CODE 4910–13–P E:\FR\FM\02JYP1.SGM 02JYP1

Agencies

[Federal Register Volume 79, Number 127 (Wednesday, July 2, 2014)]
[Proposed Rules]
[Pages 37676-37678]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-14799]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0344; Directorate Identifier 2014-NM-034-AD]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to supersede Airworthiness Directive (AD) 2013-24-
13, which applies to certain The Boeing Company Model 737-100, -200, -
200C, -300, -400, -500, -600, -700, -700C, -800, and -900 series
airplanes. AD 2013-24-13 currently requires replacing the pivot link
assembly for certain airplanes, replacing the seat track link
assemblies or modifying the existing seat track link assembly for
certain airplanes, or modifying the existing seat track link assembly
fastener for certain airplanes. AD 2013-24-13 also requires inspecting,
changing, or repairing the seat track link assembly for certain other
airplanes. Since we issued AD 2013-24-13, a paragraph reference was
found to be mis-identified. This proposed AD would correct this
paragraph reference. We are proposing this AD to prevent seat
detachment in an emergency landing, which could cause injury to
occupants of the passenger compartment and affect emergency egress.

DATES: We must receive comments on this proposed AD by August 18, 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 https://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,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com. You may view this referenced service information
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW.,
Renton, WA. For information on the availability of this material at the
FAA, call 425-227-1221.

Examining the AD Docket

You may examine the AD docket on the Internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2014-
0344; 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: Sarah Piccola, Aerospace Engineer,
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle
Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057-
3356; phone: 425-917-6483; fax: 425-917-6590; email:
sarah.piccola@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2014-0344;
Directorate Identifier 2014-NM-034-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 https://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

On November 19, 2013, we issued AD 2013-24-13, Amendment 39-17687
(78 FR 72558, December 3, 2013), for certain The Boeing Company Model
737-100, -200, -200C, -300, -400, -500, -600, -700, -700C, -800, and -
900 series

[[Page 37677]]

airplanes. AD 2013-24-13 requires replacing the pivot link assembly for
certain airplanes, replacing the seat track link assemblies or
modifying the existing seat track link assembly for certain airplanes,
or modifying the existing seat track link assembly fastener for certain
airplanes. AD 2013-24-13 also requires inspecting, changing, or
repairing the seat track link assembly for certain other airplanes. AD
2013-24-13 resulted from a report that the seat track attachment of
body station 520 flexible joint is structurally deficient in resisting
a 9g forward emergency load condition in certain seating
configurations. We issued AD 2013-24-13 to prevent seat detachment in
an emergency landing, which could cause injury to occupants of the
passenger compartment and affect emergency egress.

Actions Since AD 2013-24-13, Amendment 39-17687 (78 FR 72558, December
3, 2013) Was Issued

Since we issued AD 2013-24-13, Amendment 39-17687 (78 FR 72558,
December 3, 2013), a paragraph reference was found to be mis-identified
in paragraph (i) of that AD. Paragraph (i) of AD 2013-24-13 states that
before or concurrently with the accomplishment of the actions specified
in paragraph (g)(2) or (g)(3) of this AD, install a new seat track link
assembly. Where paragraph (i) of AD 2013-24-13 referred to paragraph
(g)(3) of that AD, this AD refers to paragraph (g)(4) of this AD.
We have also revised the terminology of the Summary and Discussion
sections of this AD to clarify the actions required by this AD.

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 retain all requirements of AD 2013-24-13,
Amendment 39-17687 (78 FR 72558, December 3, 2013). This proposed AD
would revise the second sentence of paragraph (i) of this proposed AD
to replace the reference to paragraph (g)(3) with reference to
paragraph (g)(4) of this proposed AD.

Costs of Compliance

We estimate that this proposed AD affects 1,281 airplanes of U.S.
registry.
We estimate the following costs to comply with this proposed AD:

Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product U.S. airplanes Cost on U.S. operators
--------------------------------------------------------------------------------------------------------------------------------------------------------
Replacement or modification Up to 41 work-hours x $85 Up to $15,478....... Up to $18,963....... 1,281 Up to $24,291,603.
[retained actions from AD 2013-24- per hour = $3,485.
13, Amendment 39-17687 (78 FR
72558, December 3, 2013)].
Concurrent installation or Up to 60 work-hours x $85 Up to $18,089....... Up to $23,189....... 214 Up to $4,962,446.
modification (Groups 1, 2, 4, and per hour = $5,100.
5 airplanes) [retained actions
from AD 2013[dash]24[dash]13,
Amendment 39-17687 (78 FR 72558,
December 3, 2013)] \1\.
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ We have received no definitive data that would enable us to provide a cost estimate for the actions required for airplanes in Group 6 identified in
Boeing Special Attention Service Bulletin 737-53-1260, Revision 1, dated May 23, 2013.

This new proposed AD adds no new costs to affected operators.

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 have 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 that the 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.

[[Page 37678]]

Sec. 39.13 [Amended]

0
2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD)
2013-24-13, Amendment 39-17687 (78 FR 72558, December 3, 2013), and
adding the following new AD:

The Boeing Company: Docket No. FAA-2014-0344; Directorate Identifier
2014-NM-034-AD.

(a) Comments Due Date

The FAA must receive comments on this AD action by August 18,
2014.

(b) Affected ADs

This AD supersedes AD 2013-24-13, Amendment 39-17687 (78 FR
72558, December 3, 2013).

This AD applies to the airplanes identified in paragraphs (c)(1)
and (c)(2) of this AD, certificated in any category.
(1) The Boeing Company Model 737-100, -200, -200C, -300, -400,
and -500 series airplanes, as identified in Boeing Special Attention
Service Bulletin 737-53-1260, Revision 1, dated May 23, 2013.
(2) The Boeing Company Model 737-600, -700, -700C, -800, and -
900 series airplanes, as identified in Boeing Service Bulletin 737-
53-1244, Revision 5, dated July 27, 2011.

(d) Subject

Air Transport Association (ATA) of America Code 53, Fuselage.

(e) Unsafe Condition

This AD was prompted by a report that a Boeing study found that
the seat track attachment of body station 520 flexible joint is
structurally deficient in resisting a 9g forward emergency load
condition in certain seating configurations. We are issuing this AD
to prevent seat detachment in an emergency landing, which could
cause injury to occupants of the passenger compartment and affect
emergency egress.

(f) Compliance

Comply with this AD within the compliance times specified,
unless already done.

(g) Retained Repair or Replacement of Seat Track Link Assembly or Seat
Track Link Assembly Fastener, With No Changes

This paragraph restates the requirements of paragraph (g) of AD
2013-24-13, Amendment 39-17687 (78 FR 72558, December 3, 2013), with
no changes. Within 60 months after January 7, 2014 (the effective
date of AD 2013-24-13), do the actions specified in paragraph
(g)(1), (g)(2), (g)(3), or (g)(4) of this AD, as applicable.
(1) For Model 737-600, -700, -700C, -800, and -900 series
airplanes: Install new, improved pivot link assemblies, in
accordance with the Accomplishment Instructions of Boeing Service
Bulletin 737-53-1244, Revision 5, dated July 27, 2011.
(2) For airplanes in Groups 1, 2, 3, and 4, as identified in
Boeing Special Attention Service Bulletin 737-53-1260, Revision 1,
dated May 23, 2013: Replace the seat track link assembly, in
accordance with the Accomplishment Instructions of Boeing Special
Attention Service Bulletin 737-53-1260, Revision 1, dated May 23,
2013.
(3) For airplanes in Group 6, as identified in Boeing Special
Attention Service Bulletin 737-53-1260, Revision 1, dated May 23,
2013: Inspect, change, or repair the seat track link assembly, as
applicable, using a method approved in accordance with the
procedures specified in paragraph (k) of this AD.
(4) For airplanes in Group 5, as identified in Boeing Special
Attention Service Bulletin 737-53-1260, Revision 1, dated May 23,
2013: Modify the existing seat track link assembly fastener, in
accordance with the Accomplishment Instructions of Boeing Special
Attention Service Bulletin 737-53-1260, Revision 1, dated May 23,
2013.

(h) Retained Optional Modification of Seat Track Link Assembly, With No
Changes

This paragraph restates the provisions of paragraph (h) of AD
2013-24-13, Amendment 39-17687 (78 FR 72558, December 3, 2013), with
no changes. In lieu of the replacement specified in paragraph (g)(2)
of this AD, doing the optional modification of the seat track link
assembly, in accordance with the Accomplishment Instructions of
Boeing Special Attention Service Bulletin 737-53-1260, Revision 1,
dated May 23, 2013, is acceptable for compliance with the
requirements of paragraph (g)(2) of this AD, provided the
modification is done within the compliance time specified in the
introductory text of paragraph (g) of this AD.

(i) Retained Concurrent Actions, With New Concurrent Action for Group 5
Airplanes

This paragraph restates the requirements of paragraph (i) of AD
2013-24-13, Amendment 39-17687 (78 FR 72558, December 3, 2013), with
a corrected paragraph reference that results in a new concurrent
action for Group 5 airplanes. For airplanes in Groups 1, 2, 4, and
5, as identified in Boeing Special Attention Service Bulletin 737-
53-1260, Revision 1, dated May 23, 2013: Before or concurrently with
the accomplishment of the actions specified in paragraph (g)(2) or
(g)(4) of this AD, install a new seat track link assembly or modify
the seat track link assembly, as applicable, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 737-53-1120,
Revision 1, dated May 13, 1993.

(j) Retained Credit for Previous Actions With No Changes

This paragraph restates the credit specified in paragraph (j) of
AD 2013-24-13, Amendment 39-17687 (78 FR 72558, December 3, 2013),
with no changes.
(1) This paragraph provides credit for the actions required by
paragraph (g)(1) of this AD, if those actions were performed before
January 7, 2014 (the effective date of AD 2013-24-13, Amendment 39-
17687 (78 FR 72558, December 3, 2013)), using Boeing Service
Bulletin 737-53-1244, dated April 17, 2003; Revision 1, dated May
29, 2003; Revision 2, dated March 15, 2007; or Revision 3, dated
December 4, 2008; which are not incorporated by reference in this
AD.
(2) This paragraph provides credit for the actions required by
paragraphs (g)(2) and (g)(4) of this AD, if those actions were
performed before January 7, 2014 (the effective date of AD 2013-24-
13, Amendment 39-17687 (78 FR 72558, December 3, 2013)), using
Boeing Special Attention Service Bulletin 737-53-1260, dated May 7,
2007, which is not incorporated by reference in 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) of this AD.
Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
(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 14 CFR 25.571,
Amendment 45, and the approval must specifically refer to this AD.

(l) Related Information

(1) For more information about this AD, contact Sarah Piccola,
Aerospace Engineer, Cabin Safety and Environmental Systems Branch,
ANM-150S, FAA, Seattle Aircraft Certification Office, 1601 Lind
Avenue SW., Renton, WA 98057-3356; phone: 425-917-6483; fax: 425-
917-6590; email: sarah.piccola@faa.gov.
(2) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com. You may view this referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, WA. For information on the availability of this
material at the FAA, call 425-227-1221.

Issued in Renton, Washington, on June 18, 2014.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2014-14799 Filed 7-1-14; 8:45 am]
BILLING CODE 4910-13-P

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