AD 2026-13-05

39854 Federal Register / Vol. 91, No. 125 / Wednesday, July 1, 2026 / Rules and Regulations (c) Body-to-Body Contact: Contact between the head, pelvis, torso or shoulder area of one anthropomorphic test dummy (ATD) with the adjacent seated ATD’s head, pelvis, torso or shoulder area is not allowed during the tests conducted in accordance with § 25.562(b)(1) and (b)(2). Contact during rebound is allowed. (d) Thoracic Trauma: Thoracic trauma index (TTI) injury criterion must be substantiated by dynamic test or by rational analysis based on previous test(s) of a similar seat installation. Testing must be conducted with a side impact dummy (SID) anthropomorphic test device (ATD), as defined by title 49 CFR part 572, subpart F, or its equivalent. TTI must be less than 85, as defined in part 572, subpart F. SID TTI data must be processed as defined in Federal Motor Vehicle Safety Standard (FMVSS) part 571.214, section S6.13.5. (e) Pelvis: Lateral pelvic acceleration must be shown not to exceed 130g by dynamic test or by rational analysis based on previous test(s) of a similar seat installation. Pelvic acceleration data must be processed as defined in FMVSS part 571.214, section S6.13.5. (f) Shoulder Strap Loads: Where upper-torso straps (shoulder straps) are used for occupants, tension loads in individual straps must not exceed 1,750 pounds. If dual straps are used for restraining the upper torso, the total strap-tension loads must not exceed 2,000 pounds. (2) General Test Guidelines (a) One longitudinal test with the SID ATD or its equivalent, undeformed floor, no yaw, and with all lateral structural supports (armrests/walls). Pass/fail injury assessments: TTI and pelvic acceleration. (b) One longitudinal test with the Hybrid II ATD, deformed floor, with 10 degrees yaw, and with all lateral structural supports (armrests/walls). Pass/fail injury assessments: HIC; and upper-torso-restraint load, restraint- system retention, and pelvic acceleration. (c) A vertical (14G) test is to be conducted with modified Hybrid II ATD with existing pass/fail criteria. Issued in Des Moines, Washington, on June 26, 2026. Paul R. Siegmund, Deputy Manager, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service. [FR Doc. 2026–13280 Filed 6–30–26; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2026–4660; Project Identifier AD–2026–00423–T; Amendment 39–23387; AD 2026–13–05] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY : Federal Aviation Administration (FAA), DOT. ACTION : Final rule; request for comments. SUMMARY : The FAA is superseding Airworthiness Directive (AD) 2026–04– 05, which applied to all The Boeing Company Model 737–8, 737–9, and 737–8200 airplanes. AD 2026–04–05 required revising the existing airplane flight manual (AFM) to provide the flightcrew with operating procedures (non-normal checklists) if a certain circuit breaker in the standby power control unit (SPCU) trips. Since the FAA issued AD 2026–04–05, the FAA has determined that additional revisions to the AFM are necessary to address certain environmental control system (ECS) circuit breakers downstream of the SPCU that could also trip. This AD retains the requirements of AD 2026– 04–05 and requires revising the existing AFM to provide the flightcrew with operating procedures (non-normal checklists) if certain ECS circuit breakers trip. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective July 16, 2026. The FAA must receive comments on this AD by August 17, 2026. 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 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. AD Docket: You may examine the AD docket at regulations.gov by searching for and locating Docket No. FAA–2026– 4660; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The street address for Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT : Derrick Herrera, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 817– 222–5140; email: derrick.r.herrera@ faa.gov . SUPPLEMENTARY INFORMATION : Comments Invited The FAA invites you to send any written data, views, or arguments about this final rule. Send your comments using a method listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2026–4660 and Project Identifier AD–2026–00423–T’’ at the beginning of your comments. The most helpful comments reference a specific portion of the final rule, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend this final rule because of those comments. Except for Confidential Business Information (CBI) as described in the following paragraph, and other information as described in 14 CFR 11.35, the FAA will post all comments received, without change, to regulations.gov , including any personal information you provide. The agency will also post a report summarizing each substantive verbal contact received about this final rule. Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this AD contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this AD, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as ‘‘PROPIN.’’ The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this AD. Submissions containing CBI should be sent to Derrick Herrera, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 817–222–5140; email: derrick.r. herrera@faa.gov . Any commentary that the FAA receives that is not specifically VerDate Sep<11>2014 15:23 Jun 30, 2026 Jkt 268001 PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 E:\FR\FM\01JYR1.SGM 01JYR1 lotter on DSK8BHNXB4PROD with RULES1

39855 Federal Register / Vol. 91, No. 125 / Wednesday, July 1, 2026 / Rules and Regulations designated as CBI will be placed in the public docket for this rulemaking. Background The FAA issued AD 2026–04–05, Amendment 39–23265 (91 FR 8708, February 24, 2026) (AD 2026–04–05), for all The Boeing Company Model 737– 8, 737–9, and 737–8200 airplanes. AD 2026–04–05 required revising the existing AFM to provide the flightcrew with operating procedures (non-normal checklists) if a certain circuit breaker in the SPCU trips. AD 2026–04–05 was prompted by reports of in-flight events of excessive cabin and flight deck temperatures that could not be controlled by the flightcrew using existing procedures. The FAA issued AD 2026–04–05 to address a tripped BAT BUS SECT 2 circuit breaker that could lead to an air conditioning system malfunction causing an uncontrollable, excessively high temperature in the cabin and flight deck. The unsafe condition, if not addressed, could lead to injury or incapacitation of flightcrew and passengers, which could result in the inability to maintain safe flight and landing. Actions Since AD 2026–04–05 Was Issued The preamble to AD 2026–04–05 specifies that the FAA considers that AD to be an interim action and that the FAA might consider further rulemaking to provide flightcrew procedures for addressing tripped ECS circuit breakers. Since the FAA issued AD 2026–04–05, the manufacturer has developed flightcrew procedures for addressing tripped ECS circuit breakers, and the FAA has determined that further rulemaking is necessary. The FAA is issuing this AD to address the unsafe condition on these products. Explanation of Existing AFM Procedures and Procedures Required by This AD This AD provides flightcrew procedures for a controlled descent, an attempt to reset the tripped BAT BUS SECT 2 or ECS circuit breakers, as applicable, and, if the attempt is unsuccessful, selecting engine bleed switches OFF. This AD includes five AFM procedures, as follows: • Cabin Temperature Hot procedure, as shown in appendices 1 (retained from AD 2026–04–05) and 4 (revised from AD 2026–04–05) of this AD; • Cabin Temperature Hot BAT BUS Sect 2 Circuit Breaker Trips procedure, as shown in appendix 2 of this AD (retained from AD 2026–04–05); • PACK procedure, as shown in appendix 3 of this AD (retained from AD 2026–04–05); • Cabin Temperature Hot PACK CONT VALVES RIGHT or LEFT Circuit Breaker Trips, as shown in appendix 5 of this AD (new since AD 2026–04–05); and • ZONE TEMP procedure, which currently exists in the quick reference handbook (QRH) but not in the existing AFM, as shown in appendix 6 of this AD (new since AD 2026–04–05). FAA’s Determination The FAA is issuing this AD because the agency has determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. AD Requirements This AD retains all requirements of AD 2026–04–05. This AD also requires revising the Operating Procedures section of the existing AFM to provide the flightcrew with non-normal checklists if the ECS circuit breakers downstream of the SPCU trip. Interim Action The FAA considers this AD to be an interim action. The manufacturer is currently developing a modification to address the unsafe condition identified in this AD. Once this modification is developed, FAA-approved, and available, the FAA might consider additional rulemaking. Justification for Immediate Adoption and Determination of the Effective Date Section 553(b) of the Administrative Procedure Act (APA) (5 U.S.C. 551 et seq. ) authorizes agencies to dispense with notice and comment procedures for rules when the agency, for ‘‘good cause,’’ finds that those procedures are ‘‘impracticable, unnecessary, or contrary to the public interest.’’ Under this section, an agency, upon finding good cause, may issue a final rule without providing notice and seeking comment prior to issuance. Further, section 553(d) of the APA authorizes agencies to make rules effective in less than thirty days, upon a finding of good cause. An unsafe condition exists that requires the immediate adoption of this AD without providing an opportunity for public comments prior to adoption. The FAA has found that the risk to the flying public justifies forgoing notice and comment prior to adoption of this rule because a tripped BAT BUS SECT 2 or ECS circuit breaker, and resulting effects on the cabin environment that cannot be controlled via normal procedures, could lead to injury or incapacitation of flightcrew and passengers, which could result in the inability to maintain safe flight and landing. Additionally, the compliance time in this AD is shorter than the time necessary for the public to comment and for publication of the final rule. Accordingly, notice and opportunity for prior public comment are impracticable and contrary to the public interest pursuant to 5 U.S.C. 553(b). In addition, the FAA finds that good cause exists pursuant to 5 U.S.C. 553(d) for making this amendment effective in less than 30 days, for the same reasons the FAA found good cause to forgo notice and comment. Regulatory Flexibility Act The requirements of the Regulatory Flexibility Act (RFA) do not apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt a rule without prior notice and comment. Because the FAA has determined that it has good cause to adopt this rule without notice and comment, RFA analysis is not required. Costs of Compliance The FAA estimates that this AD affects 825 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: E STIMATED C OSTS Action Labor cost Parts cost Cost per product Cost on U.S. operators AFM Revision (retained actions from AD 2026–04–05). 1 work-hour × $85 per hour = $85 ................. $0 $85 $70,125 AFM Revision (new AD action) ...................... 1 work-hour × $85 per hour = $85 ................. 0 85 70,125 VerDate Sep<11>2014 15:23 Jun 30, 2026 Jkt 268001 PO 00000 Frm 00013 Fmt 4700 Sfmt 4700 E:\FR\FM\01JYR1.SGM 01JYR1 lotter on DSK8BHNXB4PROD with RULES1

39856 Federal Register / Vol. 91, No. 125 / Wednesday, July 1, 2026 / Rules and Regulations 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. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, and (2) Will not affect intrastate aviation in Alaska. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES ■ 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] ■ 2. The FAA amends § 39.13 by: ■ a. Removing Airworthiness Directive (AD) 2026–04–05, Amendment 39– 23265 (91 FR 8708, February 24, 2026); and ■ b. Adding the following new AD: 2026–13–05 The Boeing Company: Amendment 39–23387; Docket No. FAA– 2026–4660; Project Identifier AD–2026– 00423–T. (a) Effective Date This airworthiness directive (AD) is effective July 16, 2026. (b) Affected ADs This AD replaces AD 2026–04–05, Amendment 39–23265 (91 FR 8708, February 24, 2026) (AD 2026–04–05). (c) Applicability This AD applies to all The Boeing Company Model 737–8, 737–9, and 737–8200 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 21, Air conditioning. (e) Unsafe Condition This AD was prompted by reports of in- flight events of excessive cabin and flight deck temperatures that could not be controlled by the flightcrew using existing procedures. The FAA is issuing this AD to address a tripped BAT BUS SECT 2 or environmental control systems (ECS) circuit breaker that could lead to an air conditioning system malfunction causing an uncontrollable, excessively high temperature in the cabin and flight deck. The unsafe condition, if not addressed, could lead to injury or incapacitation of flightcrew and passengers, which could result in the inability to maintain safe flight and landing. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Revision of Existing Airplane Flight Manual (AFM), With a New Terminating Action for Appendix 1 This paragraph restates the requirements of paragraph (g) of AD 2026–04–05, with a new terminating action for appendix 1 of this AD. Within 30 days after February 24, 2026 (the effective date of AD 2026–04–05), revise the Operating Procedures section of the existing AFM to include the information specified in appendices 1 through 3 of this AD. This may be done by inserting a copy of appendices 1 through 3 of this AD into the AFM. Accomplishing the revision of the existing AFM required by paragraph (h)(1) of this AD terminates the requirement of this paragraph to include the information specified in appendix 1 of this AD in the existing AFM. (h) New Revision of Existing AFM Within 30 days after the effective date of this AD, revise the Operating Procedures section of the existing AFM as required in paragraphs (h)(1) and (2) of this AD. (1) Replace the information specified in appendix 1 of this AD with the information specified in appendix 4 of this AD. This may be done by removing a copy of appendix 1 of this AD from the existing AFM and inserting a copy of appendix 4 of this AD into the existing AFM. Accomplishing the revision required by this paragraph terminates the requirement of paragraph (g) of this AD to include the information specified in appendix 1 of this AD in the existing AFM. (2) Include the information specified in appendices 5 and 6 of this AD. This may be done by inserting a copy of appendices 5 and 6 of this AD into the existing AFM. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR–520, Continued Operational Safety Branch, 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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j) of this AD. Information may be emailed to: AMOC@ faa.gov . Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) 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 Company Organization Designation Authorization (ODA) that has been authorized by the Manager, AIR–520, Continued Operational Safety Branch, FAA, 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. (j) Additional Information For more information about this AD, contact Derrick Herrera, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 817–222–5140; email: derrick.r.herrera@faa.gov . (k) Material Incorporated by Reference None. BILLING CODE 4910–13–P VerDate Sep<11>2014 15:23 Jun 30, 2026 Jkt 268001 PO 00000 Frm 00014 Fmt 4700 Sfmt 4700 E:\FR\FM\01JYR1.SGM 01JYR1 lotter on DSK8BHNXB4PROD with RULES1

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39860 Federal Register / Vol. 91, No. 125 / Wednesday, July 1, 2026 / Rules and Regulations VerDate Sep<11>2014 15:23 Jun 30, 2026 Jkt 268001 PO 00000 Frm 00018 Fmt 4700 Sfmt 4725 E:\FR\FM\01JYR1.SGM 01JYR1 ER01JY26.003</GPH> lotter on DSK8BHNXB4PROD with RULES1

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39872 Federal Register / Vol. 91, No. 125 / Wednesday, July 1, 2026 / Rules and Regulations Issued on June 26, 2026. Brian Knaup, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2026–13241 Filed 6–29–26; 11:15 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Office of the Secretary 14 CFR Part 399 [DOT–OST–2025–0633] RIN 2105–AF38 Procedures in Regulating and Enforcing Unfair or Deceptive Practices AGENCY : Office of the Secretary (OST), U.S. Department of Transportation (DOT). ACTION : Final rule. SUMMARY : The U.S. Department of Transportation (Department or DOT) is amending its regulations regarding the hearing procedures available when the Department proposes a discretionary aviation consumer protection rulemaking declaring a practice to be unfair or deceptive. This final rule revises the hearing procedures established in 2022 to align them with the more robust due process protections originally set forth in 2020, ensuring the use of neutral hearing officers and the issuance of formal findings of fact. Further, this rule rescinds the 2023 Clarification of Formal Enforcement Procedures, which specified that the Department is not limited to administrative proceedings before an Administrative Law Judge, but may also initiate civil enforcement actions in United States District Court. The Department now finds this clarification unnecessary and redundant because its authority to seek judicial enforcement is established clearly by statute. DATES : Effective July 31, 2026. VerDate Sep<11>2014 15:23 Jun 30, 2026 Jkt 268001 PO 00000 Frm 00030 Fmt 4700 Sfmt 4700 E:\FR\FM\01JYR1.SGM 01JYR1 ER01JY26.015</GPH> lotter on DSK8BHNXB4PROD with RULES1