Aviation Rulemaking Advisory Committee-New Task, 4029-4032 [2015-01044]

Download as PDF Federal Register / Vol. 80, No. 16 / Monday, January 26, 2015 / Notices top and bottom of the cover page and each succeeding page; and (3) Must provide a non-confidential summary of the information or advice. Any comment containing confidential information must be submitted by fax. A non-confidential summary of the confidential information must be submitted to www.regulations.gov. The non-confidential summary will be placed in the docket and will be open to public inspection. Pursuant to section 127(e) of the Uruguay Round Agreements Act (19 U.S.C. 3537(e)), USTR will maintain a docket on this dispute settlement proceeding, docket number USTR– 2015–0001, accessible to the public at www.regulations.gov. The public file will include nonconfidential comments received by USTR from the public regarding the dispute. If a dispute settlement panel is convened, or in the event of an appeal from such a panel, the following documents will be made available to the public at www.ustr.gov: The United States’ submissions, any nonconfidential submissions received from other participants in the dispute, and any non-confidential summaries of submissions received from other participants in the dispute. In the event that a dispute settlement panel is convened, or in the event of an appeal from such a panel, the report of the panel, and, if applicable, the report of the Appellate Body, will also be available on the Web site of the World Trade Organization, at www.wto.org. Comments open to public inspection may be viewed at www.regulations.gov. Juan Millan, Assistant United States Trade Representative for Monitoring and Enforcement. [FR Doc. 2015–01332 Filed 1–23–15; 8:45 am] BILLING CODE 3290–F5–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration [Docket No: FAA–2011–0786] emcdonald on DSK67QTVN1PROD with NOTICES Deadline for Notification of Intent To Use the Airport Improvement Program (AIP) Primary, Cargo, and Nonprimary Entitlement Funds for Fiscal Year 2015 Federal Aviation Administration, DOT. ACTION: Notice. AGENCY: The Federal Aviation Administration (FAA) announces May 1, 2015, as the deadline for each airport sponsor to notify the FAA whether or not it will use its fiscal year 2015 SUMMARY: VerDate Sep<11>2014 18:48 Jan 23, 2015 Jkt 235001 entitlement funds available under Section 47114 of Title 49, United States Code, to accomplish Airport Improvement Program (AIP)-eligible projects that the sponsor previously identified through the Airports Capital Improvement Plan (ACIP) process during the preceding year. The sponsor’s notification must address all entitlement funds apportioned for fiscal year 2015, as well as any entitlement funds not obligated from prior years. After Thursday, July 2, 2015, the FAA will carry over all remaining entitlement funds, and the funds will not be available again until at least the beginning of fiscal year 2016. This notification requirement does not apply to non-primary airports covered by the block-grant program. FOR FURTHER INFORMATION CONTACT: Mr. Frank J. San Martin, Manager, Airports Financial Assistance Division, APP– 500, on (202) 267–3831. SUPPLEMENTARY INFORMATION: Title 49 of the United States Code, section 47105(f), provides that the sponsor of each airport to which funds are apportioned shall notify the Secretary by such time and in a form as prescribed by the Secretary, of the sponsor’s intent to apply for its apportioned funds, also called entitlement funds. Therefore, the FAA is hereby notifying sponsors about steps required to ensure that the FAA has sufficient time to carryover and convert remaining entitlement funds, due to processes required under federal laws. This notice applies only to those airports that have had entitlement funds apportioned to them, except those nonprimary airports located in designated Block Grant States. Sponsors intending to apply for any of their available entitlement funds, including those unused from prior years, shall submit by 12 p.m. prevailing local time on Friday, May 1, 2015, a written indication to the designated Airports District Office (or Regional Office in regions without Airports District Offices) their intent to submit a grant application no later than close of business Thursday, July 2, 2015, to use their fiscal year 2015 entitlement funds available under Title 49 of the United States Code, section 47114. This notice must address all entitlement funds apportioned for fiscal year 2015 including those entitlement funds not obligated from prior years. By Friday, June 5, 2015, airport sponsors that have not yet submitted a final application to the FAA, should notify the FAA of any issues with meeting the final application deadline of Thursday July 2, 2015. Absent notification from the sponsor by the May 1 deadline and/or PO 00000 Frm 00090 Fmt 4703 Sfmt 4703 4029 subsequent notification by the June 5 deadline of any issues with meeting the application deadline, the FAA will proceed after Thursday, July 2, 2015 to take action to carry over all remaining entitlement funds without further notice. The funds will not be available again until at least the beginning of fiscal year 2016. This notice is promulgated to expedite and facilitate the grant-making process. The AIP grant program is operating under the requirements of Public Law 112–91, the ‘‘FAA Modernization and Reform Act of 2012,’’ enacted on February 14, 2012, which authorizes the FAA through September 30, 2015 and the ‘‘Consolidated and Further Continuing Appropriations Act, 2015’’ which appropriates FY 2015 funds for the AIP. Issued in Washington, DC, on January 20, 2015. Elliott Black, Director, Office of Airport Planning and Programming. [FR Doc. 2015–01318 Filed 1–23–15; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Aviation Rulemaking Advisory Committee—New Task Federal Aviation Administration (FAA), DOT. ACTION: Notice of new task assignment for the Aviation Rulemaking Advisory Committee (ARAC). AGENCY: The FAA assigned the Aviation Rulemaking Advisory Committee (ARAC) a new task to provide recommendations regarding revision of the damage-tolerance and fatigue requirements of Title 14, Code of Federal Regulations (14 CFR), part 25, including subparts C and E of 14 CFR part 26, and development of associated advisory material for metallic, composite, and hybrid structures. Past changes to the damage-tolerance and fatigue airworthiness standards and advisory material have been more specific to transport airplanes constructed predominantly of metal, using skin-stringer-frame architecture. Today, the trend in industry is to use more composite and hybrid structures (i.e., structure that includes a combination of composite and metallic parts and assemblies) to improve the performance of transport airplanes. As a result, the damage-tolerance and fatigue airworthiness standards and advisory SUMMARY: E:\FR\FM\26JAN1.SGM 26JAN1 4030 Federal Register / Vol. 80, No. 16 / Monday, January 26, 2015 / Notices material may not be adequate to address this trend. This notice informs the public of the new ARAC activity and solicits membership for the new Transport Airplane Metallic and Composite Structures Working Group. FOR FURTHER INFORMATION CONTACT: Walt Sippel, Federal Aviation Administration, 1601 Lind Avenue SW., Renton, WA 98057–3356, walter.sippel@ faa.gov, phone number 425–227–2774, facsimile number 425–227–1232. SUPPLEMENTARY INFORMATION: ARAC Acceptance of Task As a result of the December 18, 2014, ARAC meeting, the FAA has assigned and ARAC has accepted this task establishing the Transport Airplane Metallic and Composite Structures Working Group, under the Transport Airplane and Engine (TAE) Subcommittee. The working group will serve as staff to the ARAC and provide advice and recommendations on the assigned task. The ARAC will review and approve the recommendation report and will submit it to the FAA. emcdonald on DSK67QTVN1PROD with NOTICES Background The FAA established the ARAC to provide information, advice, and recommendations on aviation related issues that could result in rulemaking to the FAA Administrator, through the Associate Administrator of Aviation Safety. The Transport Airplane Metallic and Composite Structures Working Group will provide advice and recommendations to the ARAC on the damage-tolerance and fatigue requirements of part 25 and any associated advisory material for metallic, composite, and hybrid structures. This includes the requirements of and regulatory guidance material for subparts C and E of part 26 and any associated advisory material. The requirements of § 25.571 apply equally to structure constructed from either metallic or nonmetallic materials. Guidance material is contained in the Federal Aviation Administration (FAA) Advisory Circulars (AC) 25.571–1D and 20–107B for metallic and composite structures, respectively. The changes to § 25.571 that the FAA has adopted over the years have been more specific to the technical issues primarily associated with metallic structure. In Amendment 25–132 to § 25.571, the FAA added requirements for applicants to establish a limit of validity of the engineering data that supports the structural maintenance program (hereafter referred to as LOV) and to demonstrate that widespread fatigue damage (WFD) will VerDate Sep<11>2014 18:48 Jan 23, 2015 Jkt 235001 not occur in the airplane prior to reaching the LOV. The objective of this change, along with the development of the related guidance material, was focused on addressing the normal fatigue wear-out of metallic structure. Among other things, § 25.571 requires applicants to establish an LOV based on WFD considerations, and identify in the structural-maintenance program all maintenance actions required to address fatigue, environmental damage, and accidental damage throughout the operational life of the airplane. In a similar way, subpart C requires certain actions to prevent catastrophic failure due to WFD throughout the operational life of certain existing transport category airplanes. The FAA also adopted subpart E of part 26 to require holders of design approvals to make available to operators damage tolerance data for repairs and alterations to fatigue critical airplane structure. In addition to AC 25.571–1D, guidance material for subparts C and E of part 26 are contained in ACs 120–104 and 120–93, respectively. Because the adoption of those requirements and § 25.571 were primarily focused on metallic structure, the FAA needs to evaluate those rules and advisory material to determine whether further changes are required to address composite structures. Remaining Rulemaking Recommendations In 1995, the FAA tasked the ARAC to recommend appropriate revisions for harmonization of § 25.571, supporting policy and guidance material, and corresponding paragraph 25.571 of the Joint Aviation Requirements (JAR), which is now Certification Specification (CS) 25.571 under the European Aviation Safety Agency (EASA). The ARAC formed the General Structures Harmonization Working Group (GSHWG) to carry out that task. In 2003, the GSHWG submitted the Working Group Report on § 25.571 and JAR 25.571 [CS 25.571] to ARAC. That report described proposed changes to harmonize the rules and related guidance material. The GSHWG recommended revising or adding requirements for inspection thresholds, LOV, and structural damage capability. Subpart C of part 26 and § 25.571, Amendment 25–132, incorporated the recommendation to add requirements for establishing an LOV. The FAA has not yet addressed the GSHWG recommendations related to inspection thresholds and structural damage capability, and would request these be considered in the context of this rulemaking, which include: PO 00000 Frm 00091 Fmt 4703 Sfmt 4703 • Replacing the prescriptive requirement of § 25.571(a)(3) for setting damage-tolerance inspection thresholds with a performance-based requirement. • Adding a requirement for showing structural capability in the presence of damage, so that even if the structure fails partially, there will still be enough structure remaining to be safe. Increased Use of Composites Today, the trend in industry is to use more composite structures than in the past. The Small Airplane and Rotorcraft Directorates addressed this trend by creating separate rules for parts 23, 27 and 29 for composite structures (§ 2X.573). This tasking will consider the changes to those rules as part of the evaluation of the damage-tolerance and fatigue airworthiness standards and associated advisory material. In June of 2009, the FAA Transport Airplane Directorate sought comments through the Federal Register (74 FR 26919) on a need for future rulemaking to address extensive use of composite materials in transport category airplane construction. Several candidate technical areas were noted in the request, including fire safety, crashworthiness, lightning protection, fuel tank safety and damage-tolerance. The response by industry indicated that each area needs improved guidance and possible rulemaking. We believe the damage-tolerance requirements would require relatively small changes versus some of the updates desired in other areas. Composite considerations the working group will need to address include: • Composite analyses and test protocols as related to evolving industry practices and the development of regulatory standards. • Composite damage threats (e.g., environmental and accidental damage) and associated maintenance practices. • Large-scale test demonstration of repeated-load reliability and a need to use load enhancement factors for composite structure. • Thermal stresses generated between metal-composite interfaces, which are difficult to replicate in structural repeated-load testing but are required by § 25.571 to be considered. Future Applicability Any future change to § 25.571 should be performance-based to the extent possible, allowing application to not only current aerospace materials and material systems, but those yet to be developed (i.e., emerging technology). Guidance material, including changes to AC 25.571–1D, or AC 20–107B, should provide complete guidance for E:\FR\FM\26JAN1.SGM 26JAN1 Federal Register / Vol. 80, No. 16 / Monday, January 26, 2015 / Notices emcdonald on DSK67QTVN1PROD with NOTICES traditional metal structure, composite structure, and hybrid structure (i.e., structures that include a combination of composite and metallic parts and assemblies). There are other FAA initiatives in the area of transport crashworthiness, fuel tank lightning protection, and composite flammability testing, which will lead to further standardization of requirements related to composite airframes. These initiatives would not affect § 25.571. The Task The Transport Airplane Metallic and Composite Structures Working Group is tasked to: 1. Evaluate § 25.571, subparts C and E of part 26, and associated regulatory guidance material (e.g., advisory circulars and policy statements) to determine whether any changes to the airworthiness standards and/or guidance material are required to address transport airplanes being constructed of metallic, composite, and hybrid structures. The working group is also tasked to evaluate whether any changes to part 25 and the associated regulatory guidance material are required to provide consistency with the damage-tolerance and fatigue airworthiness standards and associated guidance material for parts 23, 27, and 29. The working group is requested to include in its evaluation a review of the following advisory circulars (AC) and policy statements (PS): a. Advisory Circulars: AC 25.571–1, Damage Tolerance and Fatigue Evaluation of Structure; AC 20–107, Composite Airframe Structure; AC 120– 93, Damage Tolerance Inspections for Repairs and Alterations; AC 120–104, Establishing and Implementing Limit of Validity to Prevent Widespread Fatigue Damage; AC 27–1, Certification of Normal Category Rotorcraft (specifically, Subpart C—Strength Requirements); and AC 29–2, Certification of Transport Category Rotorcraft (specifically, Subpart C— Strength Requirements). b. Policy Statements: PS–ANM100– 1989–00048, Policy Regarding Impact of Modifications and Repairs on the Damage Tolerance Characteristics of Transport Category Airplanes; PS– ACE100–2001–006, Static Strength Substantiation of Composite Airplane Structure; PS–AIR–100–120–07, Guidance for Component Contractor Generated Composite Design Values for Composite Structure; PS–ACE100– 2002–006, Material Qualification and Equivalency for Polymer Matrix Composite Material Systems; PS–ANM– 100–1991–00049, Policy Regarding VerDate Sep<11>2014 18:48 Jan 23, 2015 Jkt 235001 Material Strength Properties and Design Values, § 25.613; PS–ANM100–1993, Compliance with § 25.571(e) Discrete Source Damage (Uncontained Engine Failure). 2. Advise and make written recommendations on whether to change 14 CFR part 25, subparts C and E of 14 CFR part 26, and related regulatory guidance material, such as ACs 25.571– 1, 20–107, 120–93, and 120–104, to address the use of metallic, composite, and hybrid structures in transport airplanes. In developing the recommendations, the working group is requested to consider: a. The threats associated with fatigue, environmental exposure, and accidental damage that must be addressed per § 25.571. b. Applicability to emerging technology materials. c. The recommendations contained in the 2003 General Structures Harmonization Working Group (GSHWG) report entitled, ‘‘Damage Tolerance and Fatigue Evaluation of Structures, FAR/JAR § 25.571.’’ You can find the GSHWG report at http:// www.faa.gov/regulations_policies/ rulemaking/committees/documents/ index.cfm/document/information/ documentID/384. The working group recommendations should include whether it is appropriate to: i. Require applicants to assume the structure contains an initial flaw of the maximum probable size that could exist as a result of manufacturing or serviceinduced damage. ii. Add a requirement for showing structural capability in the presence of damage, so that even if the structure fails partially, there will still be enough structure remaining to be safe. d. The continued operational safety of composite and hybrid structures as they age, including any airworthiness limitations in the structural maintenance program. e. The testing of hybrid structure, including, but not limited to, addressing thermal effects, test duration, load enhancement factors, and crack-growth retardation. f. The bonding or bolting of repairs to metallic, composite, and hybrid structures. g. The certification of large structural modifications on transport airplanes constructed of composite or hybrid structures. h. The EASA rulemaking activity on aging aircraft for harmonization purposes. 3. Provide recommendations on appropriate performance-based requirements to address the results of the evaluations above, with PO 00000 Frm 00092 Fmt 4703 Sfmt 4703 4031 consideration of applicability not only to metals and known composites, but also other emerging technology materials. 4. Provide recommendations on any new guidance or changes to existing guidance, including AC 25.571–1D, and AC 20–107B to address the results of the evaluations above. 5. Provide initial qualitative and quantitative costs and benefits. Based on the recommendations, perform the following: a. Estimate the costs to implement the recommendations; b. Estimate the benefits of the recommendations in terms of potential fatalities averted; c. Estimate any other benefits (e.g., reduced administrative burden) that would result from implementation of the recommendations. 6. Develop a report containing recommendations on the findings and results of the tasks explained above. a. The recommendation report should document both majority and dissenting positions on the findings and the rationale for each position. b. Any disagreements should be documented, including the rationale for each position and the reasons for the disagreement. 7. The working group may be reinstated to assist the ARAC by responding to the FAA’s questions or concerns after the recommendation report has been submitted. Schedule The recommendation report must be submitted to the FAA for review and acceptance no later than 24 months after publication of this notice. Working Group Activity The Transport Airplane Metallic and Composite Structures Working Group must comply with the procedures adopted by the ARAC. As part of the procedures, the working group must: 1. Conduct a review and analysis of the assigned tasks and any other related materials or documents. 2. Draft and submit a work plan for completion of the task, including the rationale supporting such a plan, for consideration by the Transport Airplane and Engine Subcommittee. 3. Provide a status report at each Transport Airplane and Engine Subcommittee meeting. 4. Draft and submit the recommendation report based on the review and analysis of the assigned tasks. 5. Present the recommendation report at the Transport Airplane and Engine Subcommittee meeting. E:\FR\FM\26JAN1.SGM 26JAN1 4032 Federal Register / Vol. 80, No. 16 / Monday, January 26, 2015 / Notices emcdonald on DSK67QTVN1PROD with NOTICES 6. Present the findings from the additional tasks at the Transport Airplane and Engine Subcommittee meeting. 7. Present the findings in response to the FAA’s questions or concerns about the recommendation report at the Transport Airplane and Engine Subcommittee meeting. Participation in the Working Group The Transport Airplane Metallic and Composite Structures Working Group will be comprised of technical experts having an interest in the assigned task. A working group member need not be a member representative of the ARAC. The FAA would like a wide range of members to ensure all aspects of the tasks are considered in development of the recommendations. The provisions of the August 13, 2014, Office of Management and Budget guidance, ‘‘Revised Guidance on Appointment of Lobbyists to Federal Advisory Committees, Boards, and Commissions’’ (79 FR 47482), continues the ban on registered lobbyists participating on Agency Boards and Commissions if participating in their ‘‘individual capacity.’’ The revised guidance now allows registered lobbyists to participate on Agency Boards and Commissions in a ‘‘representative capacity’’ for the ‘‘express purpose of providing a committee with the views of a nongovernmental entity, a recognizable group of persons or nongovernmental entities (an industry, sector, labor unions, or environmental groups, etc.) or state or local government.’’ (For further information see Lobbying Disclosure Act of 1995 (LDA) as amended, 2 U.S.C 1603, 1604, and 1605.) If you wish to become a member of the Transport Airplane Metallic and Composite Structures Working Group, write the person listed under the caption FOR FURTHER INFORMATION CONTACT expressing that desire. Describe your interest in the task and state the expertise you would bring to the working group. The FAA must receive all requests by February 25, 2015. The ARAC and the FAA will review the requests and advise you whether or not your request is approved. If you are chosen for membership on the working group, you must actively participate in the working group by attending all meetings, and providing written comments when requested to do so. You must devote the resources necessary to support the working group in meeting any assigned deadlines. You must keep your management chain and those you may represent advised of working group activities and decisions VerDate Sep<11>2014 18:48 Jan 23, 2015 Jkt 235001 to ensure the proposed technical solutions do not conflict with the position of those you represent. Once the working group has begun deliberations, members will not be added or substituted without the approval of the Transport Airplane and Engine Subcommittee Chair, the FAA, including the Designated Federal Officer, and the Working Group Chair. The Secretary of Transportation determined the formation and use of the ARAC is necessary and in the public interest in connection with the performance of duties imposed on the FAA by law. ARAC meetings are open to the public. However, meetings of the Transport Airplane Metallic and Composite Structures Working Group are not open to the public, except to the extent individuals with an interest and expertise are selected to participate. The FAA will make no public announcement of working group meetings. Issued in Washington, DC, on January 16, 2015. Lirio Liu, Designated Federal Officer, Aviation Rulemaking Advisory Committee. [FR Doc. 2015–01044 Filed 1–23–15; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Railroad Administration [Docket No. FRA–2015–0001] Establishment of an Emergency Relief Docket for Calendar Year 2015 Federal Railroad Administration (FRA), U.S. Department of Transportation (DOT). ACTION: Notice of establishment of public docket. AGENCY: This Notice announces the establishment of FRA’s Emergency Relief Docket (ERD) for calendar year 2015. The designated ERD for calendar year 2015 is Docket Number FRA–2015– 0001. ADDRESSES: See SUPPLEMENTARY INFORMATION section for further information regarding submitting petitions and/or comments to Docket Number FRA–2015–0001. SUPPLEMENTARY INFORMATION: On May 19, 2009, FRA published a direct final rule addressing the establishment of ERDs and the procedures for handling petitions for emergency waivers of safety rules, regulations, or standards during an emergency situation or event. 74 FR 23329. That direct final rule SUMMARY: PO 00000 Frm 00093 Fmt 4703 Sfmt 4703 became effective on July 20, 2009, and made minor modifications to Title 49 Code of Federal Regulations (CFR) 211.45 in FRA’s Rules of Practice published at 49 CFR part 211. Paragraph (b) of 49 CFR 211.45 provides that each calendar year, FRA will establish an ERD in the publicly accessible DOT docket system (available on the internet at http://www.regulations.gov). Paragraph (b) of 49 CFR 211.45 further provides that FRA will publish a notice in the Federal Register identifying by docket number the ERD for that year. As noted in the rule, FRA’s purpose for establishing the ERD and emergency waiver procedures is to provide an expedited process for FRA to address the needs of the public and the railroad industry during emergency situations or events. This Notice announces that the designated ERD for calendar year 2015 is Docket Number FRA–2015–0001. As detailed in 49 CFR 211.45, if the FRA Administrator determines that an emergency event as defined in 49 CFR 211.45(a) has occurred, or that an imminent threat of such an emergency occurring exists, and public safety would benefit from providing the railroad industry with operational relief, the emergency waiver procedures of 49 CFR 211.45 will go into effect. In such an event, the FRA Administrator will issue a statement in the ERD indicating that the emergency waiver procedures are in effect and FRA will make every effort to post the statement on its Web site at http://www.fra.dot.gov/. Any party desiring relief from FRA regulatory requirements as a result of the emergency situation should submit a petition for emergency waiver in accordance with 49 CFR 211.45(e) and (f). Specific instructions for filing petitions for emergency waivers in accordance with 49 CFR 211.45 are found at 49 CFR 211.45(f). Specific instructions for filing comments in response to petitions for emergency waivers are found at 49 CFR 211.45(h). Anyone is able to search the electronic form of any written communications and comments received into any of our dockets by the name of the individual submitting the comment (or signing the document, if submitted on behalf of an association, business, labor union, etc.). In accordance with 5 U.S.C. 553(c), DOT solicits comments from the public to better inform its processes. DOT posts these comments, without edit, including any personal information the commenter provides, to www.regulations.gov, as described in the system of records notice (DOT/ALL– 14 FDMS), which can be reviewed at www.dot.gov/privacy. See also http:// E:\FR\FM\26JAN1.SGM 26JAN1

Agencies

[Federal Register Volume 80, Number 16 (Monday, January 26, 2015)]
[Notices]
[Pages 4029-4032]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2015-01044]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Aviation Rulemaking Advisory Committee--New Task

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of new task assignment for the Aviation Rulemaking 
Advisory Committee (ARAC).

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

SUMMARY: The FAA assigned the Aviation Rulemaking Advisory Committee 
(ARAC) a new task to provide recommendations regarding revision of the 
damage-tolerance and fatigue requirements of Title 14, Code of Federal 
Regulations (14 CFR), part 25, including subparts C and E of 14 CFR 
part 26, and development of associated advisory material for metallic, 
composite, and hybrid structures. Past changes to the damage-tolerance 
and fatigue airworthiness standards and advisory material have been 
more specific to transport airplanes constructed predominantly of 
metal, using skin-stringer-frame architecture. Today, the trend in 
industry is to use more composite and hybrid structures (i.e., 
structure that includes a combination of composite and metallic parts 
and assemblies) to improve the performance of transport airplanes. As a 
result, the damage-tolerance and fatigue airworthiness standards and 
advisory

[[Page 4030]]

material may not be adequate to address this trend. This notice informs 
the public of the new ARAC activity and solicits membership for the new 
Transport Airplane Metallic and Composite Structures Working Group.

FOR FURTHER INFORMATION CONTACT: Walt Sippel, Federal Aviation 
Administration, 1601 Lind Avenue SW., Renton, WA 98057-3356, 
walter.sippel@faa.gov, phone number 425-227-2774, facsimile number 425-
227-1232.

SUPPLEMENTARY INFORMATION: 

ARAC Acceptance of Task

    As a result of the December 18, 2014, ARAC meeting, the FAA has 
assigned and ARAC has accepted this task establishing the Transport 
Airplane Metallic and Composite Structures Working Group, under the 
Transport Airplane and Engine (TAE) Subcommittee. The working group 
will serve as staff to the ARAC and provide advice and recommendations 
on the assigned task. The ARAC will review and approve the 
recommendation report and will submit it to the FAA.

Background

    The FAA established the ARAC to provide information, advice, and 
recommendations on aviation related issues that could result in 
rulemaking to the FAA Administrator, through the Associate 
Administrator of Aviation Safety.
    The Transport Airplane Metallic and Composite Structures Working 
Group will provide advice and recommendations to the ARAC on the 
damage-tolerance and fatigue requirements of part 25 and any associated 
advisory material for metallic, composite, and hybrid structures. This 
includes the requirements of and regulatory guidance material for 
subparts C and E of part 26 and any associated advisory material.
    The requirements of Sec.  25.571 apply equally to structure 
constructed from either metallic or nonmetallic materials. Guidance 
material is contained in the Federal Aviation Administration (FAA) 
Advisory Circulars (AC) 25.571-1D and 20-107B for metallic and 
composite structures, respectively. The changes to Sec.  25.571 that 
the FAA has adopted over the years have been more specific to the 
technical issues primarily associated with metallic structure. In 
Amendment 25-132 to Sec.  25.571, the FAA added requirements for 
applicants to establish a limit of validity of the engineering data 
that supports the structural maintenance program (hereafter referred to 
as LOV) and to demonstrate that widespread fatigue damage (WFD) will 
not occur in the airplane prior to reaching the LOV. The objective of 
this change, along with the development of the related guidance 
material, was focused on addressing the normal fatigue wear-out of 
metallic structure. Among other things, Sec.  25.571 requires 
applicants to establish an LOV based on WFD considerations, and 
identify in the structural-maintenance program all maintenance actions 
required to address fatigue, environmental damage, and accidental 
damage throughout the operational life of the airplane. In a similar 
way, subpart C requires certain actions to prevent catastrophic failure 
due to WFD throughout the operational life of certain existing 
transport category airplanes. The FAA also adopted subpart E of part 26 
to require holders of design approvals to make available to operators 
damage tolerance data for repairs and alterations to fatigue critical 
airplane structure. In addition to AC 25.571-1D, guidance material for 
subparts C and E of part 26 are contained in ACs 120-104 and 120-93, 
respectively. Because the adoption of those requirements and Sec.  
25.571 were primarily focused on metallic structure, the FAA needs to 
evaluate those rules and advisory material to determine whether further 
changes are required to address composite structures.

Remaining Rulemaking Recommendations

    In 1995, the FAA tasked the ARAC to recommend appropriate revisions 
for harmonization of Sec.  25.571, supporting policy and guidance 
material, and corresponding paragraph 25.571 of the Joint Aviation 
Requirements (JAR), which is now Certification Specification (CS) 
25.571 under the European Aviation Safety Agency (EASA). The ARAC 
formed the General Structures Harmonization Working Group (GSHWG) to 
carry out that task. In 2003, the GSHWG submitted the Working Group 
Report on Sec.  25.571 and JAR 25.571 [CS 25.571] to ARAC. That report 
described proposed changes to harmonize the rules and related guidance 
material. The GSHWG recommended revising or adding requirements for 
inspection thresholds, LOV, and structural damage capability.
    Subpart C of part 26 and Sec.  25.571, Amendment 25-132, 
incorporated the recommendation to add requirements for establishing an 
LOV. The FAA has not yet addressed the GSHWG recommendations related to 
inspection thresholds and structural damage capability, and would 
request these be considered in the context of this rulemaking, which 
include:
     Replacing the prescriptive requirement of Sec.  
25.571(a)(3) for setting damage-tolerance inspection thresholds with a 
performance-based requirement.
     Adding a requirement for showing structural capability in 
the presence of damage, so that even if the structure fails partially, 
there will still be enough structure remaining to be safe.

Increased Use of Composites

    Today, the trend in industry is to use more composite structures 
than in the past. The Small Airplane and Rotorcraft Directorates 
addressed this trend by creating separate rules for parts 23, 27 and 29 
for composite structures (Sec.  2X.573). This tasking will consider the 
changes to those rules as part of the evaluation of the damage-
tolerance and fatigue airworthiness standards and associated advisory 
material.
    In June of 2009, the FAA Transport Airplane Directorate sought 
comments through the Federal Register (74 FR 26919) on a need for 
future rulemaking to address extensive use of composite materials in 
transport category airplane construction. Several candidate technical 
areas were noted in the request, including fire safety, 
crashworthiness, lightning protection, fuel tank safety and damage-
tolerance. The response by industry indicated that each area needs 
improved guidance and possible rulemaking. We believe the damage-
tolerance requirements would require relatively small changes versus 
some of the updates desired in other areas.
    Composite considerations the working group will need to address 
include:
     Composite analyses and test protocols as related to 
evolving industry practices and the development of regulatory 
standards.
     Composite damage threats (e.g., environmental and 
accidental damage) and associated maintenance practices.
     Large-scale test demonstration of repeated-load 
reliability and a need to use load enhancement factors for composite 
structure.
     Thermal stresses generated between metal-composite 
interfaces, which are difficult to replicate in structural repeated-
load testing but are required by Sec.  25.571 to be considered.

Future Applicability

    Any future change to Sec.  25.571 should be performance-based to 
the extent possible, allowing application to not only current aerospace 
materials and material systems, but those yet to be developed (i.e., 
emerging technology). Guidance material, including changes to AC 
25.571-1D, or AC 20-107B, should provide complete guidance for

[[Page 4031]]

traditional metal structure, composite structure, and hybrid structure 
(i.e., structures that include a combination of composite and metallic 
parts and assemblies).
    There are other FAA initiatives in the area of transport 
crashworthiness, fuel tank lightning protection, and composite 
flammability testing, which will lead to further standardization of 
requirements related to composite airframes. These initiatives would 
not affect Sec.  25.571.

The Task

    The Transport Airplane Metallic and Composite Structures Working 
Group is tasked to:
    1. Evaluate Sec.  25.571, subparts C and E of part 26, and 
associated regulatory guidance material (e.g., advisory circulars and 
policy statements) to determine whether any changes to the 
airworthiness standards and/or guidance material are required to 
address transport airplanes being constructed of metallic, composite, 
and hybrid structures. The working group is also tasked to evaluate 
whether any changes to part 25 and the associated regulatory guidance 
material are required to provide consistency with the damage-tolerance 
and fatigue airworthiness standards and associated guidance material 
for parts 23, 27, and 29. The working group is requested to include in 
its evaluation a review of the following advisory circulars (AC) and 
policy statements (PS):
    a. Advisory Circulars: AC 25.571-1, Damage Tolerance and Fatigue 
Evaluation of Structure; AC 20-107, Composite Airframe Structure; AC 
120-93, Damage Tolerance Inspections for Repairs and Alterations; AC 
120-104, Establishing and Implementing Limit of Validity to Prevent 
Widespread Fatigue Damage; AC 27-1, Certification of Normal Category 
Rotorcraft (specifically, Subpart C--Strength Requirements); and AC 29-
2, Certification of Transport Category Rotorcraft (specifically, 
Subpart C--Strength Requirements).
    b. Policy Statements: PS-ANM100-1989-00048, Policy Regarding Impact 
of Modifications and Repairs on the Damage Tolerance Characteristics of 
Transport Category Airplanes; PS-ACE100-2001-006, Static Strength 
Substantiation of Composite Airplane Structure; PS-AIR-100-120-07, 
Guidance for Component Contractor Generated Composite Design Values for 
Composite Structure; PS-ACE100-2002-006, Material Qualification and 
Equivalency for Polymer Matrix Composite Material Systems; PS-ANM-100-
1991-00049, Policy Regarding Material Strength Properties and Design 
Values, Sec.  25.613; PS-ANM100-1993, Compliance with Sec.  25.571(e) 
Discrete Source Damage (Uncontained Engine Failure).
    2. Advise and make written recommendations on whether to change 14 
CFR part 25, subparts C and E of 14 CFR part 26, and related regulatory 
guidance material, such as ACs 25.571-1, 20-107, 120-93, and 120-104, 
to address the use of metallic, composite, and hybrid structures in 
transport airplanes. In developing the recommendations, the working 
group is requested to consider:
    a. The threats associated with fatigue, environmental exposure, and 
accidental damage that must be addressed per Sec.  25.571.
    b. Applicability to emerging technology materials.
    c. The recommendations contained in the 2003 General Structures 
Harmonization Working Group (GSHWG) report entitled, ``Damage Tolerance 
and Fatigue Evaluation of Structures, FAR/JAR Sec.  25.571.'' You can 
find the GSHWG report at http://www.faa.gov/regulations_policies/rulemaking/committees/documents/index.cfm/document/information/documentID/384. The working group recommendations should include 
whether it is appropriate to:
    i. Require applicants to assume the structure contains an initial 
flaw of the maximum probable size that could exist as a result of 
manufacturing or service-induced damage.
    ii. Add a requirement for showing structural capability in the 
presence of damage, so that even if the structure fails partially, 
there will still be enough structure remaining to be safe.
    d. The continued operational safety of composite and hybrid 
structures as they age, including any airworthiness limitations in the 
structural maintenance program.
    e. The testing of hybrid structure, including, but not limited to, 
addressing thermal effects, test duration, load enhancement factors, 
and crack-growth retardation.
    f. The bonding or bolting of repairs to metallic, composite, and 
hybrid structures.
    g. The certification of large structural modifications on transport 
airplanes constructed of composite or hybrid structures.
    h. The EASA rulemaking activity on aging aircraft for harmonization 
purposes.
    3. Provide recommendations on appropriate performance-based 
requirements to address the results of the evaluations above, with 
consideration of applicability not only to metals and known composites, 
but also other emerging technology materials.
    4. Provide recommendations on any new guidance or changes to 
existing guidance, including AC 25.571-1D, and AC 20-107B to address 
the results of the evaluations above.
    5. Provide initial qualitative and quantitative costs and benefits. 
Based on the recommendations, perform the following:
    a. Estimate the costs to implement the recommendations;
    b. Estimate the benefits of the recommendations in terms of 
potential fatalities averted;
    c. Estimate any other benefits (e.g., reduced administrative 
burden) that would result from implementation of the recommendations.
    6. Develop a report containing recommendations on the findings and 
results of the tasks explained above.
    a. The recommendation report should document both majority and 
dissenting positions on the findings and the rationale for each 
position.
    b. Any disagreements should be documented, including the rationale 
for each position and the reasons for the disagreement.
    7. The working group may be reinstated to assist the ARAC by 
responding to the FAA's questions or concerns after the recommendation 
report has been submitted.

Schedule

    The recommendation report must be submitted to the FAA for review 
and acceptance no later than 24 months after publication of this 
notice.

Working Group Activity

    The Transport Airplane Metallic and Composite Structures Working 
Group must comply with the procedures adopted by the ARAC. As part of 
the procedures, the working group must:
    1. Conduct a review and analysis of the assigned tasks and any 
other related materials or documents.
    2. Draft and submit a work plan for completion of the task, 
including the rationale supporting such a plan, for consideration by 
the Transport Airplane and Engine Subcommittee.
    3. Provide a status report at each Transport Airplane and Engine 
Subcommittee meeting.
    4. Draft and submit the recommendation report based on the review 
and analysis of the assigned tasks.
    5. Present the recommendation report at the Transport Airplane and 
Engine Subcommittee meeting.

[[Page 4032]]

    6. Present the findings from the additional tasks at the Transport 
Airplane and Engine Subcommittee meeting.
    7. Present the findings in response to the FAA's questions or 
concerns about the recommendation report at the Transport Airplane and 
Engine Subcommittee meeting.

Participation in the Working Group

    The Transport Airplane Metallic and Composite Structures Working 
Group will be comprised of technical experts having an interest in the 
assigned task. A working group member need not be a member 
representative of the ARAC. The FAA would like a wide range of members 
to ensure all aspects of the tasks are considered in development of the 
recommendations. The provisions of the August 13, 2014, Office of 
Management and Budget guidance, ``Revised Guidance on Appointment of 
Lobbyists to Federal Advisory Committees, Boards, and Commissions'' (79 
FR 47482), continues the ban on registered lobbyists participating on 
Agency Boards and Commissions if participating in their ``individual 
capacity.'' The revised guidance now allows registered lobbyists to 
participate on Agency Boards and Commissions in a ``representative 
capacity'' for the ``express purpose of providing a committee with the 
views of a nongovernmental entity, a recognizable group of persons or 
nongovernmental entities (an industry, sector, labor unions, or 
environmental groups, etc.) or state or local government.'' (For 
further information see Lobbying Disclosure Act of 1995 (LDA) as 
amended, 2 U.S.C 1603, 1604, and 1605.)
    If you wish to become a member of the Transport Airplane Metallic 
and Composite Structures Working Group, write the person listed under 
the caption FOR FURTHER INFORMATION CONTACT expressing that desire. 
Describe your interest in the task and state the expertise you would 
bring to the working group. The FAA must receive all requests by 
February 25, 2015. The ARAC and the FAA will review the requests and 
advise you whether or not your request is approved.
    If you are chosen for membership on the working group, you must 
actively participate in the working group by attending all meetings, 
and providing written comments when requested to do so. You must devote 
the resources necessary to support the working group in meeting any 
assigned deadlines. You must keep your management chain and those you 
may represent advised of working group activities and decisions to 
ensure the proposed technical solutions do not conflict with the 
position of those you represent. Once the working group has begun 
deliberations, members will not be added or substituted without the 
approval of the Transport Airplane and Engine Subcommittee Chair, the 
FAA, including the Designated Federal Officer, and the Working Group 
Chair.
    The Secretary of Transportation determined the formation and use of 
the ARAC is necessary and in the public interest in connection with the 
performance of duties imposed on the FAA by law.
    ARAC meetings are open to the public. However, meetings of the 
Transport Airplane Metallic and Composite Structures Working Group are 
not open to the public, except to the extent individuals with an 
interest and expertise are selected to participate. The FAA will make 
no public announcement of working group meetings.

    Issued in Washington, DC, on January 16, 2015.
Lirio Liu,
Designated Federal Officer, Aviation Rulemaking Advisory Committee.
[FR Doc. 2015-01044 Filed 1-23-15; 8:45 am]
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