81 FR 40208 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 119 (June 21, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 119 (June 21, 2016)
| Page Range | 40208-40210 | |
| FR Document | 2016-14295 |
[Federal Register Volume 81, Number 119 (Tuesday, June 21, 2016)] [Proposed Rules] [Pages 40208-40210] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-14295] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2016-6901; Directorate Identifier 2015-NM-192-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 adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, and -900 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the aft pressure bulkhead is subject to widespread fatigue damage (WFD). This proposed AD would require repetitive inspections of the aft pressure bulkhead web for any cracking, crack indications, discrepant fastener holes, and corrosion; and corrective actions if necessary. We are proposing this AD to detect and correct cracks in the aft pressure bulkhead web, which could result in an uncontrolled decompression of the fuselage. DATES: We must receive comments on this proposed AD by August 5, 2016. 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 NPRM, 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-2016-6901. 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-2016- 6901; 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: Alan Pohl, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6450; fax: 425-917-6590; 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-2016-6901; Directorate Identifier 2015-NM-192-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 Fatigue damage can occur locally, in small areas or structural design details, or globally, in widespread areas. Multiple-site damage is widespread damage that occurs in a large structural element such as a single rivet line of a lap splice joining two large skin panels. Widespread damage can also occur in multiple elements such as adjacent frames or stringers. Multiple-site damage and multiple-element damage cracks are typically too small initially to be reliably detected with normal inspection methods. Without intervention, these cracks will grow, and eventually compromise the structural integrity of the airplane. This condition is known as widespread fatigue damage. It is associated with general degradation of large areas of structure with similar structural details and stress levels. As an airplane ages, WFD will likely occur, and will certainly occur if the airplane is operated long enough without any intervention. The FAA's WFD final rule (75 FR 69746, November 15, 2010) became effective on January 14, 2011. The WFD rule requires certain actions to prevent structural failure due to WFD throughout the operational life of certain existing transport category airplanes and all of these airplanes that will be certificated in the future. For existing and future airplanes subject to the WFD rule, the rule requires that DAHs establish a limit of validity (LOV) of the engineering data that support the structural maintenance program. Operators affected by the WFD rule may not fly an airplane beyond its LOV, unless an extended LOV is approved. The WFD rule (75 FR 69746, November 15, 2010) does not require identifying and developing maintenance actions if the DAHs can show that such actions are not necessary to prevent WFD before the airplane reaches the [[Page 40209]] LOV. Many LOVs, however, do depend on accomplishment of future maintenance actions. As stated in the WFD rule, any maintenance actions necessary to reach the LOV will be mandated by airworthiness directives through separate rulemaking actions. In the context of WFD, this action is necessary to enable DAHs to propose LOVs that allow operators the longest operational lives for their airplanes, and still ensure that WFD will not occur. This approach allows for an implementation strategy that provides flexibility to DAHs in determining the timing of service information development (with FAA approval), while providing operators with certainty regarding the LOV applicable to their airplanes. Analysis by the DAH has determined that the aft pressure bulkhead web at the Y chord is susceptible to WFD for certain Model 737-600, - 700, -700C, -800, and -900 series airplanes. This analysis indicates that the repetitive inspection intervals mandated by AD 2005-21-06, Amendment 39-14344 (70 FR 61226, October 21, 2005), should be reduced at the WFD threshold to detect cracking due to WFD. This cracking, if left undetected, could result in an uncontrolled decompression of the fuselage. Related Service Information Under 1 CFR Part 51 We reviewed Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015. The service information describes procedures for low frequency eddy current, or high frequency eddy current, and detailed inspections of the bulkhead web for cracking, crack indications, discrepant fastener holes, and corrosion. 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. 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 these same type designs. 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 phrase ``corrective actions'' is used in this NPRM. Corrective actions 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 Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015, 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 680 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Action Labor cost Cost per product Cost on U.S. operators ---------------------------------------------------------------------------------------------------------------- Inspections.................. 34 work-hours x $85 per hour $2,890 per inspection $1,965,200 per = $2,890 per inspection cycle. inspection cycle. cycle. ---------------------------------------------------------------------------------------------------------------- We have received no definitive data that would enable us to provide cost estimates for the on-condition actions specified in this proposed 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 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): [[Page 40210]] The Boeing Company: Docket No. FAA-2016-6901; Directorate Identifier 2015-NM-192-AD. (a) Comments Due Date We must receive comments by August 5, 2016. (b) Affected ADs Certain requirements of this AD terminate certain requirements of AD 2005-21-06, Amendment 39-14344 (70 FR 61226, October 21, 2005) (``AD 2005-21-06''). (c) Applicability This AD applies to The Boeing Company Model 737-600, -700, - 700C, -800, and -900 series airplanes, certificated in any category, line number 1 through 1755, as identified in Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Unsafe Condition This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the aft pressure bulkhead is subject to widespread fatigue damage (WFD). We are issuing this AD to detect and correct cracks in the aft pressure bulkhead web, which could result in an uncontrolled decompression of the fuselage. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Repetitive Inspections At the applicable time specified in paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015, or within 18 months after November 25, 2005 (the effective date of AD 2005-21-06), whichever occurs later: Do a low frequency eddy current (LFEC) or high frequency eddy current (HFEC) inspection, and a detailed inspection, of the aft and forward sides, as applicable, of the aft pressure bulkhead web at the Y chord, above and below stringer S-15L and stringer S-15R, to detect discrepancies (including cracking, crack indications, discrepant fastener holes, and corrosion), in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015. Access and restoration procedures specified in the Accomplishment Instructions of Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015, are not required by this AD. Operators may do those procedures following their maintenance practices. (1) If no discrepancy is found: Repeat the inspections thereafter at the applicable times specified in paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015. (2) If any discrepancy is found: Do the actions specified in paragraphs (g)(2)(i) and (g)(2)(ii) of this AD. (i) Repair the discrepancy before further flight using a method approved in accordance with the procedures specified in paragraph (j) of this AD. (ii) On areas that are not repaired, repeat the inspections thereafter at the applicable times specified in paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 737-53A1248, Revision 2, dated October 14, 2015. (h) Terminating Action for AD 2005-21-06 Accomplishment of the initial inspections required by paragraph (g) of this AD terminates the requirements of AD 2005-21-06. (i) Credit for Previous Actions This paragraph provides credit for the actions specified in paragraph (g) of this AD, if those actions were performed before the effective date of this AD using Boeing Alert Service Bulletin 737- 53A1248, dated September 9, 2004; or Boeing Alert Service Bulletin 737-53A1248, Revision 1, dated September 10, 2007; which are not incorporated by reference in this AD. (j) 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 (k)(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. (k) Related Information (1) For more information about this AD, contact Alan Pohl, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057- 3356; phone: 425-917-6450; fax: 425-917-6590; email: [email protected]. (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 3, 2016. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2016-14295 Filed 6-20-16; 8:45 am] BILLING CODE 4910-13-P
![40208 Federal Register / Vol. 81, No. 119 / Tuesday, June 21, 2016 / Proposed Rules
still be done as specified, and the airplane ADDRESSES: You may send comments, section. Include ‘‘Docket No. FAA–
can be put back in an airworthy condition. using the procedures found in 14 CFR 2016–6901; Directorate Identifier 2015–
(k) Related Information 11.43 and 11.45, by any of the following NM–192–AD’’ at the beginning of your
(1) For more information about this AD,
methods: comments. We specifically invite
contact Nathan Weigand, Aerospace • Federal eRulemaking Portal: Go to comments on the overall regulatory,
Engineer, Airframe Branch, ANM–120S, http://www.regulations.gov. Follow the economic, environmental, and energy
FAA, Seattle Aircraft Certification Office instructions for submitting comments. aspects of this proposed AD. We will
(ACO), 1601 Lind Avenue SW., Renton, WA • Fax: 202–493–2251. consider all comments received by the
98057–3356; phone: 425–917–6428; fax: 425– • Mail: U.S. Department of closing date and may amend this
917–6590; email: nathan.p.weigand@faa.gov. Transportation, Docket Operations, M– proposed AD because of those
(2) For service information identified in 30, West Building Ground Floor, Room comments.
this AD, contact Boeing Commercial W12–140, 1200 New Jersey Avenue SE., We will post all comments we
Airplanes, Attention: Data & Services receive, without change, to http://
Washington, DC 20590.
Management, P.O. Box 3707, MC 2H–65,
Seattle, WA 98124–2207; telephone 206–
• Hand Delivery: Deliver to Mail www.regulations.gov, including any
544–5000, extension 1; fax 206–766–5680; address above between 9 a.m. and 5 personal information you provide. We
Internet https://www.myboeingfleet.com. You p.m., Monday through Friday, except will also post a report summarizing each
may view this referenced service information Federal holidays. substantive verbal contact we receive
at the FAA, the FAA, Transport Airplane For service information identified in about this proposed AD.
Directorate, 1601 Lind Avenue SW., Renton, this NPRM, contact Boeing Commercial Discussion
WA. For information on the availability of Airplanes, Attention: Data & Services
this material at the FAA, call 425–227–1221. Management, P.O. Box 3707, MC 2H–65, Fatigue damage can occur locally, in
Issued in Renton, Washington, on June 3, Seattle, WA 98124–2207; telephone small areas or structural design details,
2016. 206–544–5000, extension 1; fax 206– or globally, in widespread areas.
Michael Kaszycki, 766–5680; Internet https:// Multiple-site damage is widespread
www.myboeingfleet.com. You may view damage that occurs in a large structural
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service. this referenced service information at element such as a single rivet line of a
the FAA, Transport Airplane lap splice joining two large skin panels.
[FR Doc. 2016–14293 Filed 6–20–16; 8:45 am]
Directorate, 1601 Lind Avenue SW., Widespread damage can also occur in
BILLING CODE 4910–13–P
Renton, WA. For information on the multiple elements such as adjacent
availability of this material at the FAA, frames or stringers. Multiple-site
call 425–227–1221. It is also available damage and multiple-element damage
DEPARTMENT OF TRANSPORTATION
on the Internet at http:// cracks are typically too small initially to
Federal Aviation Administration www.regulations.gov by searching for be reliably detected with normal
and locating Docket No. FAA–2016– inspection methods. Without
14 CFR Part 39 intervention, these cracks will grow,
6901.
and eventually compromise the
[Docket No. FAA–2016–6901; Directorate Examining the AD Docket structural integrity of the airplane. This
Identifier 2015–NM–192–AD] condition is known as widespread
You may examine the AD docket on
RIN 2120–AA64 the Internet at http:// fatigue damage. It is associated with
www.regulations.gov by searching for general degradation of large areas of
Airworthiness Directives; The Boeing and locating Docket No. FAA–2016– structure with similar structural details
Company Airplanes 6901; or in person at the Docket and stress levels. As an airplane ages,
Management Facility between 9 a.m. WFD will likely occur, and will
AGENCY: Federal Aviation certainly occur if the airplane is
Administration (FAA), DOT. and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket operated long enough without any
ACTION: Notice of proposed rulemaking intervention.
contains this proposed AD, the
(NPRM). The FAA’s WFD final rule (75 FR
regulatory evaluation, any comments
69746, November 15, 2010) became
SUMMARY: We propose to adopt a new received, and other information. The
effective on January 14, 2011. The WFD
airworthiness directive (AD) for certain street address for the Docket Office
rule requires certain actions to prevent
The Boeing Company Model 737–600, (phone: 800–647–5527) is in the
structural failure due to WFD
–700, –700C, –800, and –900 series ADDRESSES section. Comments will be
throughout the operational life of
airplanes. This proposed AD was available in the AD docket shortly after
certain existing transport category
prompted by an evaluation by the receipt.
airplanes and all of these airplanes that
design approval holder (DAH) FOR FURTHER INFORMATION CONTACT: will be certificated in the future. For
indicating that the aft pressure bulkhead Alan Pohl, Aerospace Engineer, existing and future airplanes subject to
is subject to widespread fatigue damage Airframe Branch, ANM–120S, FAA, the WFD rule, the rule requires that
(WFD). This proposed AD would Seattle Aircraft Certification Office DAHs establish a limit of validity (LOV)
require repetitive inspections of the aft (ACO), 1601 Lind Avenue SW., Renton, of the engineering data that support the
pressure bulkhead web for any cracking, WA 98057–3356; phone: 425–917–6450; structural maintenance program.
crack indications, discrepant fastener fax: 425–917–6590; email: Alan.Pohl@ Operators affected by the WFD rule may
rmajette on DSK2TPTVN1PROD with PROPOSALS
holes, and corrosion; and corrective faa.gov. not fly an airplane beyond its LOV,
actions if necessary. We are proposing SUPPLEMENTARY INFORMATION: unless an extended LOV is approved.
this AD to detect and correct cracks in The WFD rule (75 FR 69746,
the aft pressure bulkhead web, which Comments Invited November 15, 2010) does not require
could result in an uncontrolled We invite you to send any written identifying and developing maintenance
decompression of the fuselage. relevant data, views, or arguments about actions if the DAHs can show that such
DATES: We must receive comments on this proposal. Send your comments to actions are not necessary to prevent
this proposed AD by August 5, 2016. an address listed under the ADDRESSES WFD before the airplane reaches the
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![Federal Register / Vol. 81, No. 119 / Tuesday, June 21, 2016 / Proposed Rules 40209
LOV. Many LOVs, however, do depend uncontrolled decompression of the ‘‘Differences Between this Proposed AD
on accomplishment of future fuselage. and the Service Information.’’
maintenance actions. As stated in the The phrase ‘‘corrective actions’’ is
Related Service Information Under 1
WFD rule, any maintenance actions used in this NPRM. Corrective actions
CFR Part 51
necessary to reach the LOV will be correct or address any condition found.
mandated by airworthiness directives We reviewed Boeing Alert Service Corrective actions in an AD could
through separate rulemaking actions. In Bulletin 737–53A1248, Revision 2, include, for example, repairs.
the context of WFD, this action is dated October 14, 2015. The service
information describes procedures for Differences Between This Proposed AD
necessary to enable DAHs to propose and the Service Information
LOVs that allow operators the longest low frequency eddy current, or high
operational lives for their airplanes, and frequency eddy current, and detailed Boeing Alert Service Bulletin 737–
still ensure that WFD will not occur. inspections of the bulkhead web for 53A1248, Revision 2, dated October 14,
This approach allows for an cracking, crack indications, discrepant 2015, specifies to contact the
implementation strategy that provides fastener holes, and corrosion. This manufacturer for instructions on how to
flexibility to DAHs in determining the service information is reasonably repair certain conditions, but this
timing of service information available because the interested parties proposed AD would require repairing
development (with FAA approval), have access to it through their normal those conditions in one of the following
while providing operators with certainty course of business or by the means ways:
identified in the ADDRESSES section. • In accordance with a method that
regarding the LOV applicable to their
we approve; or
airplanes. FAA’s Determination
• Using data that meet the
Analysis by the DAH has determined We are proposing this AD because we certification basis of the airplane, and
that the aft pressure bulkhead web at the evaluated all the relevant information that have been approved by the Boeing
Y chord is susceptible to WFD for and determined the unsafe condition Commercial Airplanes Organization
certain Model 737–600, –700, –700C, described previously is likely to exist or Designation Authorization (ODA) whom
–800, and –900 series airplanes. This develop in other products of these same we have authorized to make those
analysis indicates that the repetitive type designs. findings.
inspection intervals mandated by AD
2005–21–06, Amendment 39–14344 (70 Proposed AD Requirements Costs of Compliance
FR 61226, October 21, 2005), should be This proposed AD would require We estimate that this proposed AD
reduced at the WFD threshold to detect accomplishing the actions specified in affects 680 airplanes of U.S. registry.
cracking due to WFD. This cracking, if the service information described We estimate the following costs to
left undetected, could result in an previously, except as discussed under comply with this proposed AD:
ESTIMATED COSTS
Action Labor cost Cost per product Cost on U.S. operators
Inspections ......... 34 work-hours × $85 per hour = $2,890 per inspection cycle $2,890 per inspection cycle ... $1,965,200 per inspection
cycle.
We have received no definitive data products identified in this rulemaking under the criteria of the Regulatory
that would enable us to provide cost action. Flexibility Act.
estimates for the on-condition actions
Regulatory Findings List of Subjects in 14 CFR Part 39
specified in this proposed AD.
We determined that this proposed AD
Authority for This Rulemaking Air transportation, Aircraft, Aviation
would not have federalism implications
safety, Incorporation by reference,
Title 49 of the United States Code under Executive Order 13132. This
specifies the FAA’s authority to issue Safety.
proposed AD would not have a
rules on aviation safety. Subtitle I, substantial direct effect on the States, on The Proposed Amendment
section 106, describes the authority of the relationship between the national
the FAA Administrator. Subtitle VII: Government and the States, or on the Accordingly, under the authority
Aviation Programs, describes in more distribution of power and delegated to me by the Administrator,
detail the scope of the Agency’s responsibilities among the various the FAA proposes to amend 14 CFR part
authority. levels of government. 39 as follows:
We are issuing this rulemaking under For the reasons discussed above, I
the authority described in Subtitle VII, certify this proposed regulation: PART 39—AIRWORTHINESS
Part A, Subpart III, Section 44701: (1) Is not a ‘‘significant regulatory DIRECTIVES
‘‘General requirements.’’ Under that action’’ under Executive Order 12866,
section, Congress charges the FAA with (2) Is not a ‘‘significant rule’’ under ■ 1. The authority citation for part 39
rmajette on DSK2TPTVN1PROD with PROPOSALS
promoting safe flight of civil aircraft in the DOT Regulatory Policies and continues to read as follows:
air commerce by prescribing regulations Procedures (44 FR 11034, February 26,
Authority: 49 U.S.C. 106(g), 40113, 44701.
for practices, methods, and procedures 1979),
the Administrator finds necessary for (3) Will not affect intrastate aviation § 39.13 [Amended]
safety in air commerce. This regulation in Alaska, and
is within the scope of that authority (4) Will not have a significant ■ 2. The FAA amends § 39.13 by adding
because it addresses an unsafe condition economic impact, positive or negative, the following new airworthiness
that is likely to exist or develop on on a substantial number of small entities directive (AD):
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The Boeing Company: Docket No. FAA– (ii) On areas that are not repaired, repeat Issued in Renton, Washington, on June 3,
2016–6901; Directorate Identifier 2015– the inspections thereafter at the applicable 2016.
NM–192–AD. times specified in paragraph 1.E., Michael Kaszycki,
‘‘Compliance,’’ of Boeing Alert Service
(a) Comments Due Date Acting Manager, Transport Airplane
Bulletin 737–53A1248, Revision 2, dated
We must receive comments by August 5, Directorate, Aircraft Certification Service.
October 14, 2015.
2016. [FR Doc. 2016–14295 Filed 6–20–16; 8:45 am]
(h) Terminating Action for AD 2005–21–06 BILLING CODE 4910–13–P
(b) Affected ADs
Accomplishment of the initial inspections
Certain requirements of this AD terminate required by paragraph (g) of this AD
certain requirements of AD 2005–21–06, terminates the requirements of AD 2005–21– DEPARTMENT OF TRANSPORTATION
Amendment 39–14344 (70 FR 61226, October 06.
21, 2005) (‘‘AD 2005–21–06’’).
(i) Credit for Previous Actions Federal Aviation Administration
(c) Applicability
This paragraph provides credit for the
This AD applies to The Boeing Company actions specified in paragraph (g) of this AD, 14 CFR Part 39
Model 737–600, –700, –700C, –800, and –900 if those actions were performed before the [Docket No. FAA–2016–7262; Directorate
series airplanes, certificated in any category, effective date of this AD using Boeing Alert Identifier 2015–NM–079–AD]
line number 1 through 1755, as identified in Service Bulletin 737–53A1248, dated
Boeing Alert Service Bulletin 737–53A1248, September 9, 2004; or Boeing Alert Service RIN 2120–AA64
Revision 2, dated October 14, 2015. Bulletin 737–53A1248, Revision 1, dated
(d) Subject September 10, 2007; which are not Airworthiness Directives; Airbus
incorporated by reference in this AD. Airplanes
Air Transport Association (ATA) of
America Code 53, Fuselage. (j) Alternative Methods of Compliance AGENCY: Federal Aviation
(AMOCs) Administration (FAA), DOT.
(e) Unsafe Condition
(1) The Manager, Seattle Aircraft ACTION: Notice of proposed rulemaking
This AD was prompted by an evaluation by Certification Office (ACO), FAA, has the
the design approval holder (DAH) indicating (NPRM).
authority to approve AMOCs for this AD, if
that the aft pressure bulkhead is subject to
requested using the procedures found in 14 SUMMARY: We propose to supersede
widespread fatigue damage (WFD). We are
CFR 39.19. In accordance with 14 CFR 39.19,
issuing this AD to detect and correct cracks
send your request to your principal inspector
Airworthiness Directive (AD) 98–13–14,
in the aft pressure bulkhead web, which for certain Airbus Model A320–211,
or local Flight Standards District Office, as
could result in an uncontrolled –212, and –231 airplanes. AD 98–13–14
appropriate. If sending information directly
decompression of the fuselage. currently requires repetitive rotating
to the manager of the ACO, send it to the
(f) Compliance attention of the person identified in probe inspections of fastener holes and/
Comply with this AD within the paragraph (k)(1) of this AD. Information may or the adjacent tooling hole of a former
compliance times specified, unless already be emailed to: 9-ANM-Seattle-ACO-AMOC- junction of the aft fuselage, as
done. Requests@faa.gov. applicable, and corrective action, if
(2) Before using any approved AMOC,
(g) Repetitive Inspections notify your appropriate principal inspector,
necessary. AD 98–13–14 also provides
or lacking a principal inspector, the manager for an optional terminating action for
At the applicable time specified in
paragraph 1.E., ‘‘Compliance,’’ of Boeing of the local flight standards district office/ the repetitive inspections. Since we
Alert Service Bulletin 737–53A1248, certificate holding district office. issued AD 98–13–14, an evaluation by
Revision 2, dated October 14, 2015, or within (3) An AMOC that provides an acceptable the design approval holder (DAH)
18 months after November 25, 2005 (the level of safety may be used for any repair, indicates that the former junction of the
effective date of AD 2005–21–06), whichever modification, or alteration required by this aft fuselage is subject to fatigue damage.
occurs later: Do a low frequency eddy current AD if it is approved by the Boeing This proposed AD would continue to
(LFEC) or high frequency eddy current Commercial Airplanes Organization
Designation Authorization (ODA) that has
require the actions in AD 98–13–14,
(HFEC) inspection, and a detailed inspection,
of the aft and forward sides, as applicable, of been authorized by the Manager, Seattle with revised inspection compliance
the aft pressure bulkhead web at the Y chord, ACO, to make those findings. To be times. We are proposing this AD to
above and below stringer S–15L and stringer approved, the repair method, modification detect and correct fatigue cracks in the
S–15R, to detect discrepancies (including deviation, or alteration deviation must meet former junction of the aft fuselage;
cracking, crack indications, discrepant the certification basis of the airplane, and the fatigue cracking could propagate and
fastener holes, and corrosion), in accordance approval must specifically refer to this AD. could adversely affect the structural
with the Accomplishment Instructions of integrity of the airplane.
(k) Related Information
Boeing Alert Service Bulletin 737–53A1248,
Revision 2, dated October 14, 2015. Access (1) For more information about this AD, DATES: We must receive comments on
and restoration procedures specified in the contact Alan Pohl, Aerospace Engineer, this proposed AD by August 5, 2016.
Accomplishment Instructions of Boeing Alert Airframe Branch, ANM–120S, FAA, Seattle ADDRESSES: You may send comments,
Service Bulletin 737–53A1248, Revision 2, Aircraft Certification Office (ACO), 1601 Lind using the procedures found in 14 CFR
dated October 14, 2015, are not required by Avenue SW., Renton, WA 98057–3356;
phone: 425–917–6450; fax: 425–917–6590; 11.43 and 11.45, by any of the following
this AD. Operators may do those procedures
following their maintenance practices. email: Alan.Pohl@faa.gov. methods:
(1) If no discrepancy is found: Repeat the (2) For service information identified in • Federal eRulemaking Portal: Go to
inspections thereafter at the applicable times this AD, contact Boeing Commercial http://www.regulations.gov. Follow the
specified in paragraph 1.E., ‘‘Compliance,’’ of Airplanes, Attention: Data & Services instructions for submitting comments.
rmajette on DSK2TPTVN1PROD with PROPOSALS
Boeing Alert Service Bulletin 737–53A1248, Management, P.O. Box 3707, MC 2H–65, • Fax: 202–493–2251.
Revision 2, dated October 14, 2015. Seattle, WA 98124–2207; telephone 206– • Mail: U.S. Department of
(2) If any discrepancy is found: Do the 544–5000, extension 1; fax 206–766–5680; Transportation, Docket Operations, M–
actions specified in paragraphs (g)(2)(i) and Internet https://www.myboeingfleet.com. You
(g)(2)(ii) of this AD. may view this referenced service information
30, West Building Ground Floor, Room
(i) Repair the discrepancy before further at the FAA, Transport Airplane Directorate, W12–140, 1200 New Jersey Avenue SE.,
flight using a method approved in 1601 Lind Avenue SW., Renton, WA. For Washington, DC 20590.
accordance with the procedures specified in information on the availability of this • Hand Delivery: U.S. Department of
paragraph (j) of this AD. material at the FAA, call 425–227–1221. Transportation, Docket Operations, M–
VerDate Sep<11>2014 14:42 Jun 20, 2016 Jkt 238001 PO 00000 Frm 00014 Fmt 4702 Sfmt 4702 E:\FR\FM\21JNP1.SGM 21JNP1](https://thefederalregister.org/doc/81_FR_40327/page/3.svg)
Document Created: 2016-06-21 01:30:29
Document Modified: 2016-06-21 01:30:29
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by August 5, 2016. | |
| Contact | Alan Pohl, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6450; fax: 425-917-6590; email: [email protected] | |
| FR Citation | 81 FR 40208 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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