Airworthiness Directives; General Electric Company Engines, and Various Restricted Category Rotorcraft, 24363-24366 [2024-07438]

Download as PDF Federal Register / Vol. 89, No. 68 / Monday, April 8, 2024 / Rules and Regulations publish a notice of determination not to amend a test procedure. * * * * * [FR Doc. 2024–07114 Filed 4–5–24; 8:45 am] BILLING CODE 6450–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2024–0774; Project Identifier AD–2024–00197–E,R; Amendment 39–22723; AD 2024–06–51] RIN 2120–AA64 Airworthiness Directives; General Electric Company Engines, and Various Restricted Category Rotorcraft Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. AGENCY: The FAA is superseding airworthiness directive (AD) 2024–05– 51, which applied to certain General Electric Company (GE) Model CT7–2E1, CT7–2F1, CT7–8A, CT7–8E, and CT7– 8F5 engines, and various restricted category helicopters with GE Model T700–GE–700, –701A, –701C, –701D/ CC, –701D, –401, –401C, CT7–2D, or CT7–2D1 engines installed. AD 2024– 05–51 required a phase array ultrasonic inspection of the torque reference tube magnetic insert braze joint of the power turbine (PT) drive shaft assembly for inadequate braze coverage, and repair or replacement of the PT drive shaft assembly if necessary. This AD was prompted by at least four reports of failures of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly within the last several months. This AD retains the requirements of AD 2024–05–51 and expands the applicability to include a PT drive shaft assembly part number that was inadvertently omitted. The FAA previously sent an emergency AD to all known U.S. owners and operators of these engines and helicopters and is now issuing this AD to address the unsafe condition on these products. DATES: This AD is effective April 23, 2024. Emergency AD 2024–06–51, issued on March 22, 2024, which contained the requirements of this amendment, was effective with actual notice. The Director of the Federal Register approved the incorporation by reference of a certain publication identified in this AD as of April 23, 2024. The Director of the Federal Register approved the incorporation by reference lotter on DSK11XQN23PROD with RULES1 SUMMARY: VerDate Sep<11>2014 15:53 Apr 05, 2024 Jkt 262001 of certain other publications listed in this AD as of April 1, 2024 (89 FR 18771, March 15, 2024). The FAA must receive comments on this AD by May 23, 2024. 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 under Docket No. FAA–2024–0774; 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. Material Incorporated by Reference: • For GE service information, contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) 552–3272; email: aviation.fleetsupport@ge.com; website: ge.com. • For Sikorsky Aircraft Corporation service information, contact Sikorsky Field Representative or Sikorsky’s Service Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, Trumbull, CT 06611; phone: 1 (800) 946–4337 (1–800Winged-S); email: wcs_cust_service_ eng.gr-sik@lmco.com; website: sikorsky360.com. • You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (817) 222–5110. It is also available at regulations.gov under Docket No. FAA–2024–0774. FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238–7146; email: barbara.caufield@ faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited The FAA invites you to send any written data, views, or arguments about PO 00000 Frm 00027 Fmt 4700 Sfmt 4700 24363 this final rule. Send your comments to an address listed under ADDRESSES. Include ‘‘Docket No. FAA–2024–0774; Project Identifier AD–2024–00197–E,R’’ 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 Barbara Caufield, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. Background The FAA issued AD 2024–05–51, Amendment 39–22702 (89 FR 18771, March 15, 2024) (AD 2024–05–51), for certain GE Model CT7–2E1, CT7–2F1, CT7–8A, CT7–8E, and CT7–8F5 engines, and various restricted category helicopters with GE Model T700–GE– 700, –701A, –701C, –701D/CC, –701D, –401, –401C, CT7–2D, or CT7–2D1 engines installed. That AD was issued as Emergency AD 2024–05–51 on February 28, 2024, and distributed to all known U.S. owners and operators of these engines and helicopters. AD 2024– 05–51 required a phase array ultrasonic E:\FR\FM\08APR1.SGM 08APR1 24364 Federal Register / Vol. 89, No. 68 / Monday, April 8, 2024 / Rules and Regulations inspection of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly for inadequate braze coverage, and repair or replacement of the PT drive shaft assembly if necessary. AD 2024–05–51 was prompted by at least four reports of failures of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly within the last several months. This condition, if not addressed, could result in improper torque and engine speed indications, which, in combination with specific phases of flight, could create an unacceptably high flight crew workload in maintaining control of the aircraft, and result in consequent loss of control of the aircraft. Actions Since Issuance of AD 2024–05– 51 Since the issuance of AD 2024–05–51, the FAA determined that PT drive shaft assembly part number (P/N) 5125T92G01 was inadvertently omitted from the applicability. Therefore, the FAA is superseding AD 2024–05–51 to revise the applicability to include engines with PT drive shaft assembly P/ N 5125T92G01 installed. The FAA also revised the applicability of this AD to consolidate paragraphs (c)(2)(iii) through (viii) into paragraph (c)(2)(iii) of this AD and revised the required actions of this AD to reference service information that was published since Emergency AD 2024–05–51 was issued. This AD was sent previously to all known U.S. owners and operators of these engines and helicopters as Emergency AD 2024–06–51, dated March 22, 2024, which superseded AD 2024–05–51. 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 these same type designs. Related Service Information Under 1 CFR Part 51 The FAA reviewed Sikorsky Aircraft Corporation S–70/H–60 Helicopter Alert Service Bulletin (ASB) 70–04–17, dated February 28, 2024, which specifies procedures for a phase array ultrasonic inspection of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly for inadequate braze coverage. This AD also requires the following service information, which the Director of the Federal Register approved for incorporation by reference as of April 1, 2024 (89 FR 18771, March 15, 2024). • GE ASB CT7–2E1 S/B 72–A0034, dated February 26, 2024. • GE ASB CT7–8 S/B 72–A0118, Revision 01, dated February 26, 2024. 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. AD Requirements This AD requires a phase array ultrasonic inspection of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly for inadequate braze coverage, and repair or replacement of the PT drive shaft assembly if necessary. Interim Action The FAA considers this AD to be an interim action. The manufacturer is currently investigating the root cause of the unsafe condition identified in this AD. If final action is later identified, the FAA might consider further rulemaking. Justification for Immediate Adoption and Determination of the Effective Date Section 553(b)(3)(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 required the immediate adoption of Emergency AD 2024–06–51, issued on March 22, 2024, to all known U.S. owners and operators of these engines. The FAA found that the risk to the flying public justified forgoing notice and comment prior to adoption of this rule because failure of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly could result in improper torque and engine speed indications, which, in combination with specific phases of flight, could create an unacceptably high flight crew workload in maintaining control of the aircraft, and result in consequent loss of control of the aircraft. Since this condition happens rapidly and without warning, the inspection and any necessary repair or replacement must be accomplished before further flight. Thus, the FAA has determined that the affected torque reference tube magnetic insert braze joint of the PT drive shaft assembly must be inspected, and repaired or replaced if necessary, before further flight. This condition still exists; therefore, notice and opportunity for prior public comment are impracticable and contrary to the public interest pursuant to 5 U.S.C. 553(b)(3)(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 FAA has determined that it has good cause to adopt this rule without prior notice and comment, RFA analysis is not required. Costs of Compliance The FAA estimates that this AD affects 100 engines installed on aircraft of U.S. registry. The FAA estimates the following costs to comply with this AD: lotter on DSK11XQN23PROD with RULES1 ESTIMATED COSTS Action Labor cost Phase array ultrasonic inspection ................... 1 work-hour × $85 per hour = $85 ................. The FAA estimates the following costs to do any necessary repairs or replacements that would be required VerDate Sep<11>2014 15:53 Apr 05, 2024 Jkt 262001 based on the results of the inspection. The agency has no way of determining PO 00000 Frm 00028 Fmt 4700 Sfmt 4700 Cost per product Parts cost $0 $85 Cost on U.S. operators $8,500 the number of engines that might need these repairs or replacements: E:\FR\FM\08APR1.SGM 08APR1 Federal Register / Vol. 89, No. 68 / Monday, April 8, 2024 / Rules and Regulations 24365 ON-CONDITION COSTS Action Labor cost Repair or replacement of the PT drive shaft assembly 8 work-hours × $85 per hour = $680 ........................... Authority for This Rulemaking § 39.13 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 lotter on DSK11XQN23PROD with RULES1 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. VerDate Sep<11>2014 15:53 Apr 05, 2024 Jkt 262001 [Amended] 2. The FAA amends § 39.13 by: a. Removing Airworthiness Directive 2024–05–51, Amendment 39–22702 (89 FR 18771, March 15, 2024); and ■ b. Adding the following new airworthiness directive: 2024–06–51 General Electric Company, and Various Restricted Category Helicopters: Amendment 39–22723; Docket No. FAA–2024–0774; Project Identifier AD–2024–00197–E,R. (a) Effective Date The FAA issued Emergency Airworthiness Directive (AD) 2024–06–51 on March 22, 2024, directly to affected owners and operators. As a result of such actual notice, that AD was effective for those owners and operators on the date it was received. This AD contains the same requirements as that emergency AD and, for those who did not receive actual notice, is effective on April 23, 2024. (b) Affected ADs This AD replaces AD 2024–05–51, Amendment 39–22702 (89 FR 18771, March 15, 2024). (c) Applicability This AD applies to the following products: (1) General Electric Company (GE) Model CT7–2E1, CT7–2F1, CT7–8A, CT7–8E, and CT7–8F5 engines, with any power turbine (PT) drive shaft assembly part number 5123T91G01, 5123T91G02, 5125T92G01, and 5128T51G01 installed, and the following conditions: (i) A PT drive shaft assembly with less than 100 hours-time since new (TSN) or 100 hours-time since replacement (TSR) of the torque reference tube, as applicable, as of the effective date of this AD; and (ii) An engine serial number, PT module serial number, or PT drive shaft assembly serial number listed in GE Alert Service Bulletin (ASB) CT7–2E1 S/B 72–A0034, dated February 26, 2024 (CT7–2E1 S/B 72– A0034); or GE ASB CT7–8 S/B 72–A0118, Revision 01, dated February 26, 2024 (CT7– 8 S/B 72–A0118, Revision 01). (2) Restricted category helicopters specified in paragraphs (c)(2)(i) through (iv) of this AD, with GE Model T700–GE–700, –701A, –701C, –701D/CC, –701D, –401, –401C, CT7–2D or CT7–2D1 engines installed, with a PT drive shaft assembly that was installed in the engine after January 1, 2020, and has less than 100 hours-TSN or 100 hours-TSR, as applicable. PT drive shaft assemblies manufactured or repaired after January 1, 2024, are not affected by this AD. (i) Model EH–60A helicopters; current type certificate holders include, but are not limited to, Delta Enterprise; Heliqwest PO 00000 Frm 00029 Fmt 4700 Sfmt 4700 Parts cost $50,000 Cost per product $50,680 International Inc.; Pickering Aviation, Inc.; and Sixtyhawk TC, LLC. (ii) Model HH–60L helicopters; current type certificate holders include, but are not limited to, Capitol Helicopters Inc.; Central Copters Inc.; and Sixtyhawk TC, LLC. (iii) Sikorsky Aircraft Corporation Model S–70, S–70A, S–70C, S–70C(M), S–70C(M1), and S–70M helicopters. (iv) Model UH–60A helicopters; current type certificate holders include, but are not limited to, ACE Aeronautics LLC; Billings Flying Service, Inc.; Blackhawk Mission Equipment; Capitol Helicopters Inc.; Carson Helicopters; Delta Enterprise; Heliqwest International Inc.; High Performance Helicopters Corp.; Northwest Rotorcraft, LLC; Pickering Aviation, Inc.; PJ Helicopters Inc.; Reeder Flying Service Inc.; Sixtyhawk TC, LLC; Skydance Blackhawk Operations LLC; Timberline Helicopters, Inc.; and Unical Air Inc. (d) Subject Joint Aircraft System Component (JASC) Code 7200, Engine (Turbine/Turboprop); 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by at least four reports of failures of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly within the last several months. The FAA is issuing this AD to prevent failure of the PT drive shaft reference torque tube magnetic insert braze joint. The unsafe condition, if not addressed, could result in improper torque and engine speed indications, which, in combination with specific phases of flight, could create an unacceptably high flight crew workload in maintaining control of the aircraft, and result in consequent loss of control of the aircraft. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) For GE Model CT7–2E1, CT7–2F1, CT7–8A, CT7–8E, and CT7–8F5 engines: Before further flight, do a phase array ultrasonic inspection of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly for inadequate braze coverage in accordance with the Accomplishment Instructions, paragraph 3.A.(2), of CT7–2E1 S/B 72–A0034, or CT7– 8 S/B 72–A0118, Revision 01, as applicable. (2) For engines installed on the restricted category aircraft specified in paragraphs (c)(2)(i) through (iv) of this AD: Before further flight, do a phase array ultrasonic inspection of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly for inadequate braze coverage in accordance with the Accomplishment Instructions, E:\FR\FM\08APR1.SGM 08APR1 24366 Federal Register / Vol. 89, No. 68 / Monday, April 8, 2024 / Rules and Regulations paragraphs 3.B. through 3.D., of Sikorsky Aircraft Corporation S–70/H–60 Helicopter ASB 70–04–17, dated February 28, 2024 (Sikorsky ASB 70–04–17), or using a method approved by the Manager, AIR–520 Continued Operational Safety Branch, FAA. (3) If during any inspection required by paragraphs (g)(1) or (2) of this AD, any braze coverage of the torque reference tube magnetic insert braze joint is found to be less than 42 percent, before further flight, repair or replace the PT drive shaft assembly. (h) No Reporting Requirement Although the service information referenced in Sikorsky ASB 70–04–17 specifies to submit certain information to the manufacturer, this AD does not include that requirement. (i) Special Flight Permit A special flight permit may be issued in accordance with 14 CFR 21.197 and 21.199 to operate the aircraft to a location where the phase array ultrasonic inspection can be performed, provided no passengers are onboard. (j) 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 local Flight Standards District Office, as appropriate. If sending information directly to the manager of the AIR–520 Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: ANEAD-AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (3) Approved methods of compliance (MOCs) or other AMOCs approved for paragraph (g) of AD 2024–05–51 are approved as MOCs or AMOCs for paragraph (g) of this AD. lotter on DSK11XQN23PROD with RULES1 (k) Additional Information For further information about this AD, contact Barbara Caufield, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238–7146; email: barbara.caufield@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (3) The following service information was approved for IBR on April 23, 2024. (i) Sikorsky Aircraft Corporation S–70/H– 60 Helicopter Alert Service Bulletin 70–04– 17, dated February 28, 2024. (ii) [Reserved] VerDate Sep<11>2014 15:53 Apr 05, 2024 Jkt 262001 (4) The following service information was approved for IBR on April 1, 2024 (89 FR 18771, March 15, 2024). (i) General Electric Company (GE) Alert Service Bulletin (ASB) CT7–2E1 S/B 72– A0034, dated February 26, 2024. (ii) GE ASB CT7–8 S/B 72–A0118, Revision 01, dated February 26, 2024. (5) For GE service information, contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) 552– 3272; email: aviation.fleetsupport@ge.com; website: ge.com. (6) For Sikorsky Aircraft Corporation service information, contact Sikorsky Field Representative or Sikorsky’s Service Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, Trumbull, CT 06611; phone: 1 (800) 946–4337 (1–800-Winged-S); email: wcs_ cust_service_eng.gr-sik@lmco.com; website: sikorsky360.com. (7) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (817) 222–5110. (8) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. reference action under 1 CFR part 51, subject to the annual revision of FAA Order JO 7400.11 and publication of conforming amendments. ADDRESSES: A copy of the Notice of Proposed Rulemaking (NPRM), all comments received, this final rule, and all background material may be viewed online at www.regulations.gov using the FAA Docket number. Electronic retrieval help and guidelines are available on the website. It is available 24 hours a day, 365 days a year. FAA Order JO 7400.11H Airspace Designations and Reporting Points and subsequent amendments can be viewed online at www.faa.gov/air_traffic/ publications/. You may also contact the Rules and Regulations Group, Office of Policy, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591; telephone: (202) 267–8783. FOR FURTHER INFORMATION CONTACT: John Fornito, Operations Support Group, Eastern Service Center, Federal Aviation Administration, 1701 Columbia Avenue, College Park, GA 30337; Telephone: (404) 305–6364. SUPPLEMENTARY INFORMATION: Issued on March 27, 2024. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. Authority for This Rulemaking [FR Doc. 2024–07438 Filed 4–4–24; 11:15 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2023–2204; Airspace Docket No. 23–AEA–20] RIN 2120–AA66 Amendment of Class D and Class E Airspace; Wallops Island, VA Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: History This action amends Class D airspace, Class E surface airspace, and Class E airspace extending upward from 700 feet above the surface for Wallops Flight Facility, Wallops Island, VA. This action eliminates the Snow Hill VORTAC from the airspace descriptions for this airport, as well as updating the airport name, geographic coordinates, and description headers. DATES: Effective 0901 UTC, July 11, 2024. The Director of the Federal Register approves this incorporation by SUMMARY: PO 00000 Frm 00030 Fmt 4700 Sfmt 4700 The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. 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. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority, as it amends Class D and Class E airspace for Wallops Island, VA. An airspace evaluation determined that this update is necessary to support IFR operations in the area. The FAA published a notice of proposed rulemaking for Docket No. FAA 2023–2204 in the Federal Register (88 FR 87382; December 18, 2023), proposing to amend Class D airspace, Class E surface airspace, and Class E airspace extending upward from 700 feet above the surface for Wallops Flight Facility, Wallops Island, VA. Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. E:\FR\FM\08APR1.SGM 08APR1

Agencies

[Federal Register Volume 89, Number 68 (Monday, April 8, 2024)]
[Rules and Regulations]
[Pages 24363-24366]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-07438]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0774; Project Identifier AD-2024-00197-E,R; 
Amendment 39-22723; AD 2024-06-51]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Engines, and 
Various Restricted Category Rotorcraft

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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

SUMMARY: The FAA is superseding airworthiness directive (AD) 2024-05-
51, which applied to certain General Electric Company (GE) Model CT7-
2E1, CT7-2F1, CT7-8A, CT7-8E, and CT7-8F5 engines, and various 
restricted category helicopters with GE Model T700-GE-700, -701A, -
701C, -701D/CC, -701D, -401, -401C, CT7-2D, or CT7-2D1 engines 
installed. AD 2024-05-51 required a phase array ultrasonic inspection 
of the torque reference tube magnetic insert braze joint of the power 
turbine (PT) drive shaft assembly for inadequate braze coverage, and 
repair or replacement of the PT drive shaft assembly if necessary. This 
AD was prompted by at least four reports of failures of the torque 
reference tube magnetic insert braze joint of the PT drive shaft 
assembly within the last several months. This AD retains the 
requirements of AD 2024-05-51 and expands the applicability to include 
a PT drive shaft assembly part number that was inadvertently omitted. 
The FAA previously sent an emergency AD to all known U.S. owners and 
operators of these engines and helicopters and is now issuing this AD 
to address the unsafe condition on these products.

DATES: This AD is effective April 23, 2024. Emergency AD 2024-06-51, 
issued on March 22, 2024, which contained the requirements of this 
amendment, was effective with actual notice.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication identified in this AD as of April 
23, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of certain other publications listed in this AD as of April 
1, 2024 (89 FR 18771, March 15, 2024).
    The FAA must receive comments on this AD by May 23, 2024.

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 under 
Docket No. FAA-2024-0774; 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.
    Material Incorporated by Reference:
     For GE service information, contact General Electric 
Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) 552-3272; 
email: ge.com">aviation.fleetsupport@ge.com; website: ge.com.
     For Sikorsky Aircraft Corporation service information, 
contact Sikorsky Field Representative or Sikorsky's Service Engineering 
Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, 
Trumbull, CT 06611; phone: 1 (800) 946-4337 (1-800-Winged-S); email: 
[email protected]; website: sikorsky360.com.
     You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 1200 
District Avenue, Burlington, MA 01803. For information on the 
availability of this material at the FAA, call (817) 222-5110. It is 
also available at regulations.gov under Docket No. FAA-2024-0774.

FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety 
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: 
(781) 238-7146; email: [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written data, views, or arguments 
about this final rule. Send your comments to an address listed under 
ADDRESSES. Include ``Docket No. FAA-2024-0774; Project Identifier AD-
2024-00197-E,R'' 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 Barbara 
Caufield, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des 
Moines, WA 98198. Any commentary that the FAA receives which is not 
specifically designated as CBI will be placed in the public docket for 
this rulemaking.

Background

    The FAA issued AD 2024-05-51, Amendment 39-22702 (89 FR 18771, 
March 15, 2024) (AD 2024-05-51), for certain GE Model CT7-2E1, CT7-2F1, 
CT7-8A, CT7-8E, and CT7-8F5 engines, and various restricted category 
helicopters with GE Model T700-GE-700, -701A, -701C, -701D/CC, -701D, -
401, -401C, CT7-2D, or CT7-2D1 engines installed. That AD was issued as 
Emergency AD 2024-05-51 on February 28, 2024, and distributed to all 
known U.S. owners and operators of these engines and helicopters. AD 
2024-05-51 required a phase array ultrasonic

[[Page 24364]]

inspection of the torque reference tube magnetic insert braze joint of 
the PT drive shaft assembly for inadequate braze coverage, and repair 
or replacement of the PT drive shaft assembly if necessary. AD 2024-05-
51 was prompted by at least four reports of failures of the torque 
reference tube magnetic insert braze joint of the PT drive shaft 
assembly within the last several months. This condition, if not 
addressed, could result in improper torque and engine speed 
indications, which, in combination with specific phases of flight, 
could create an unacceptably high flight crew workload in maintaining 
control of the aircraft, and result in consequent loss of control of 
the aircraft.

Actions Since Issuance of AD 2024-05-51

    Since the issuance of AD 2024-05-51, the FAA determined that PT 
drive shaft assembly part number (P/N) 5125T92G01 was inadvertently 
omitted from the applicability. Therefore, the FAA is superseding AD 
2024-05-51 to revise the applicability to include engines with PT drive 
shaft assembly P/N 5125T92G01 installed. The FAA also revised the 
applicability of this AD to consolidate paragraphs (c)(2)(iii) through 
(viii) into paragraph (c)(2)(iii) of this AD and revised the required 
actions of this AD to reference service information that was published 
since Emergency AD 2024-05-51 was issued.
    This AD was sent previously to all known U.S. owners and operators 
of these engines and helicopters as Emergency AD 2024-06-51, dated 
March 22, 2024, which superseded AD 2024-05-51.

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 these same type designs.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Sikorsky Aircraft Corporation S-70/H-60 Helicopter 
Alert Service Bulletin (ASB) 70-04-17, dated February 28, 2024, which 
specifies procedures for a phase array ultrasonic inspection of the 
torque reference tube magnetic insert braze joint of the PT drive shaft 
assembly for inadequate braze coverage.
    This AD also requires the following service information, which the 
Director of the Federal Register approved for incorporation by 
reference as of April 1, 2024 (89 FR 18771, March 15, 2024).
     GE ASB CT7-2E1 S/B 72-A0034, dated February 26, 2024.
     GE ASB CT7-8 S/B 72-A0118, Revision 01, dated February 26, 
2024.
    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.

AD Requirements

    This AD requires a phase array ultrasonic inspection of the torque 
reference tube magnetic insert braze joint of the PT drive shaft 
assembly for inadequate braze coverage, and repair or replacement of 
the PT drive shaft assembly if necessary.

Interim Action

    The FAA considers this AD to be an interim action. The manufacturer 
is currently investigating the root cause of the unsafe condition 
identified in this AD. If final action is later identified, the FAA 
might consider further rulemaking.

Justification for Immediate Adoption and Determination of the Effective 
Date

    Section 553(b)(3)(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 required the immediate adoption of 
Emergency AD 2024-06-51, issued on March 22, 2024, to all known U.S. 
owners and operators of these engines. The FAA found that the risk to 
the flying public justified forgoing notice and comment prior to 
adoption of this rule because failure of the torque reference tube 
magnetic insert braze joint of the PT drive shaft assembly could result 
in improper torque and engine speed indications, which, in combination 
with specific phases of flight, could create an unacceptably high 
flight crew workload in maintaining control of the aircraft, and result 
in consequent loss of control of the aircraft. Since this condition 
happens rapidly and without warning, the inspection and any necessary 
repair or replacement must be accomplished before further flight. Thus, 
the FAA has determined that the affected torque reference tube magnetic 
insert braze joint of the PT drive shaft assembly must be inspected, 
and repaired or replaced if necessary, before further flight. This 
condition still exists; therefore, notice and opportunity for prior 
public comment are impracticable and contrary to the public interest 
pursuant to 5 U.S.C. 553(b)(3)(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 FAA has determined 
that it has good cause to adopt this rule without prior notice and 
comment, RFA analysis is not required.

Costs of Compliance

    The FAA estimates that this AD affects 100 engines installed on 
aircraft of U.S. registry.
    The FAA estimates the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Phase array ultrasonic inspection.....  1 work-hour x $85 per                 $0             $85          $8,500
                                         hour = $85.
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary repairs 
or replacements that would be required based on the results of the 
inspection. The agency has no way of determining the number of engines 
that might need these repairs or replacements:

[[Page 24365]]



                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                    Action                                 Labor cost               Parts cost        product
----------------------------------------------------------------------------------------------------------------
Repair or replacement of the PT drive shaft     8 work-hours x $85 per hour =            $50,000         $50,680
 assembly.                                       $680.
----------------------------------------------------------------------------------------------------------------

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

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:
0
a. Removing Airworthiness Directive 2024-05-51, Amendment 39-22702 (89 
FR 18771, March 15, 2024); and
0
b. Adding the following new airworthiness directive:

2024-06-51 General Electric Company, and Various Restricted Category 
Helicopters: Amendment 39-22723; Docket No. FAA-2024-0774; Project 
Identifier AD-2024-00197-E,R.

(a) Effective Date

    The FAA issued Emergency Airworthiness Directive (AD) 2024-06-51 
on March 22, 2024, directly to affected owners and operators. As a 
result of such actual notice, that AD was effective for those owners 
and operators on the date it was received. This AD contains the same 
requirements as that emergency AD and, for those who did not receive 
actual notice, is effective on April 23, 2024.

(b) Affected ADs

    This AD replaces AD 2024-05-51, Amendment 39-22702 (89 FR 18771, 
March 15, 2024).

(c) Applicability

    This AD applies to the following products:
    (1) General Electric Company (GE) Model CT7-2E1, CT7-2F1, CT7-
8A, CT7-8E, and CT7-8F5 engines, with any power turbine (PT) drive 
shaft assembly part number 5123T91G01, 5123T91G02, 5125T92G01, and 
5128T51G01 installed, and the following conditions:
    (i) A PT drive shaft assembly with less than 100 hours-time 
since new (TSN) or 100 hours-time since replacement (TSR) of the 
torque reference tube, as applicable, as of the effective date of 
this AD; and
    (ii) An engine serial number, PT module serial number, or PT 
drive shaft assembly serial number listed in GE Alert Service 
Bulletin (ASB) CT7-2E1 S/B 72-A0034, dated February 26, 2024 (CT7-
2E1 S/B 72-A0034); or GE ASB CT7-8 S/B 72-A0118, Revision 01, dated 
February 26, 2024 (CT7-8 S/B 72-A0118, Revision 01).
    (2) Restricted category helicopters specified in paragraphs 
(c)(2)(i) through (iv) of this AD, with GE Model T700-GE-700, -701A, 
-701C, -701D/CC, -701D, -401, -401C, CT7-2D or CT7-2D1 engines 
installed, with a PT drive shaft assembly that was installed in the 
engine after January 1, 2020, and has less than 100 hours-TSN or 100 
hours-TSR, as applicable. PT drive shaft assemblies manufactured or 
repaired after January 1, 2024, are not affected by this AD.
    (i) Model EH-60A helicopters; current type certificate holders 
include, but are not limited to, Delta Enterprise; Heliqwest 
International Inc.; Pickering Aviation, Inc.; and Sixtyhawk TC, LLC.
    (ii) Model HH-60L helicopters; current type certificate holders 
include, but are not limited to, Capitol Helicopters Inc.; Central 
Copters Inc.; and Sixtyhawk TC, LLC.
    (iii) Sikorsky Aircraft Corporation Model S-70, S-70A, S-70C, S-
70C(M), S-70C(M1), and S-70M helicopters.
    (iv) Model UH-60A helicopters; current type certificate holders 
include, but are not limited to, ACE Aeronautics LLC; Billings 
Flying Service, Inc.; Blackhawk Mission Equipment; Capitol 
Helicopters Inc.; Carson Helicopters; Delta Enterprise; Heliqwest 
International Inc.; High Performance Helicopters Corp.; Northwest 
Rotorcraft, LLC; Pickering Aviation, Inc.; PJ Helicopters Inc.; 
Reeder Flying Service Inc.; Sixtyhawk TC, LLC; Skydance Blackhawk 
Operations LLC; Timberline Helicopters, Inc.; and Unical Air Inc.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7200, Engine 
(Turbine/Turboprop); 7250, Turbine Section.

(e) Unsafe Condition

    This AD was prompted by at least four reports of failures of the 
torque reference tube magnetic insert braze joint of the PT drive 
shaft assembly within the last several months. The FAA is issuing 
this AD to prevent failure of the PT drive shaft reference torque 
tube magnetic insert braze joint. The unsafe condition, if not 
addressed, could result in improper torque and engine speed 
indications, which, in combination with specific phases of flight, 
could create an unacceptably high flight crew workload in 
maintaining control of the aircraft, and result in consequent loss 
of control of the aircraft.

(f) Compliance

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

(g) Required Actions

    (1) For GE Model CT7-2E1, CT7-2F1, CT7-8A, CT7-8E, and CT7-8F5 
engines: Before further flight, do a phase array ultrasonic 
inspection of the torque reference tube magnetic insert braze joint 
of the PT drive shaft assembly for inadequate braze coverage in 
accordance with the Accomplishment Instructions, paragraph 3.A.(2), 
of CT7-2E1 S/B 72-A0034, or CT7-8 S/B 72-A0118, Revision 01, as 
applicable.
    (2) For engines installed on the restricted category aircraft 
specified in paragraphs (c)(2)(i) through (iv) of this AD: Before 
further flight, do a phase array ultrasonic inspection of the torque 
reference tube magnetic insert braze joint of the PT drive shaft 
assembly for inadequate braze coverage in accordance with the 
Accomplishment Instructions,

[[Page 24366]]

paragraphs 3.B. through 3.D., of Sikorsky Aircraft Corporation S-70/
H-60 Helicopter ASB 70-04-17, dated February 28, 2024 (Sikorsky ASB 
70-04-17), or using a method approved by the Manager, AIR-520 
Continued Operational Safety Branch, FAA.
    (3) If during any inspection required by paragraphs (g)(1) or 
(2) of this AD, any braze coverage of the torque reference tube 
magnetic insert braze joint is found to be less than 42 percent, 
before further flight, repair or replace the PT drive shaft 
assembly.

(h) No Reporting Requirement

    Although the service information referenced in Sikorsky ASB 70-
04-17 specifies to submit certain information to the manufacturer, 
this AD does not include that requirement.

(i) Special Flight Permit

    A special flight permit may be issued in accordance with 14 CFR 
21.197 and 21.199 to operate the aircraft to a location where the 
phase array ultrasonic inspection can be performed, provided no 
passengers are onboard.

(j) 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 local 
Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the AIR-520 Continued 
Operational Safety Branch, send it to the attention of the person 
identified in paragraph (k) of this AD and email 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) Approved methods of compliance (MOCs) or other AMOCs 
approved for paragraph (g) of AD 2024-05-51 are approved as MOCs or 
AMOCs for paragraph (g) of this AD.

(k) Additional Information

    For further information about this AD, contact Barbara Caufield, 
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, 
WA 98198; phone: (781) 238-7146; email: [email protected].

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (3) The following service information was approved for IBR on 
April 23, 2024.
    (i) Sikorsky Aircraft Corporation S-70/H-60 Helicopter Alert 
Service Bulletin 70-04-17, dated February 28, 2024.
    (ii) [Reserved]
    (4) The following service information was approved for IBR on 
April 1, 2024 (89 FR 18771, March 15, 2024).
    (i) General Electric Company (GE) Alert Service Bulletin (ASB) 
CT7-2E1 S/B 72-A0034, dated February 26, 2024.
    (ii) GE ASB CT7-8 S/B 72-A0118, Revision 01, dated February 26, 
2024.
    (5) For GE service information, contact General Electric 
Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) 552-3272; 
email: ge.com">aviation.fleetsupport@ge.com; website: ge.com.
    (6) For Sikorsky Aircraft Corporation service information, 
contact Sikorsky Field Representative or Sikorsky's Service 
Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 
124 Quarry Road, Trumbull, CT 06611; phone: 1 (800) 946-4337 (1-800-
Winged-S); email: [email protected]; website: 
sikorsky360.com.
    (7) You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 1200 
District Avenue, Burlington, MA 01803. For information on the 
availability of this material at the FAA, call (817) 222-5110.
    (8) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].

    Issued on March 27, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-07438 Filed 4-4-24; 11:15 am]
BILLING CODE 4910-13-P

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