67692 Federal Register / Vol. 85, No. 207 / Monday, October 26, 2020 / Proposed Rules

DEPARTMENT OF TRANSPORTATION Fort Worth, TX 76177. For information as ‘‘PROPIN.’’ The FAA will treat such on the availability of this material at the marked submissions as confidential Federal Administration FAA, call 817–222–5110. under the FOIA, and they will not be placed in the public docket of this Examining the AD Docket 14 CFR Part 39 NPRM. Submissions containing CBI You may examine the AD docket on should be sent to Neil Doh, Aerospace [Docket No. FAA–2020–0920; Project the internet at https:// Identifier AD–2020–00662–R] Engineer, Boston ACO Branch, FAA, www.regulations.gov by searching for 1200 District Avenue, Burlington, MA RIN 2120–AA64 and locating Docket No. FAA–2020– 01803. Any commentary that the FAA 0920; or in person at Docket Operations receives which is not specifically Airworthiness Directives; Sikorsky between 9 a.m. and 5 p.m., Monday Aircraft and Sikorsky Aircraft designated as CBI will be placed in the through Friday, except Federal holidays. public docket for this rulemaking. Corporation The AD docket contains this NPRM, any Background AGENCY: Federal Aviation comments received, and other Administration (FAA), DOT. information. The street address for The FAA proposes to adopt a new AD Docket Operations is listed above. ACTION: Notice of proposed rulemaking for Sikorsky Aircraft Model S–61L, S– FOR FURTHER INFORMATION CONTACT: (NPRM). Neil 61N, S–61NM, and S–61R helicopters Doh, Aerospace Engineer, Boston ACO and Sikorsky Aircraft Corporation SUMMARY: The FAA proposes to adopt a Branch, FAA, 1200 District Avenue, Model S–61A, S–61D, S–61E, and S– new airworthiness directive (AD) for all Burlington, MA 01803; phone: 781– 61V restricted category helicopters, with Sikorsky Aircraft Model S–61L, S–61N, 238–7757; fax: 781–238–7199; email: an arm assembly, part number S6140– S–61NM, and S–61R helicopters and [email protected]. 62614–009, installed. The FAA learned Sikorsky Aircraft Corporation Model S– SUPPLEMENTARY INFORMATION: from Sikorsky Aircraft Corporation that 61A, S–61D, S–61E, and S–61V Comments Invited Sikorsky S–61 Alert Service restricted category helicopters. This Bulletin (ASB) 61B General-1, Revision proposed AD was prompted by the The FAA invites you to send any No. Z, dated November 13, 2018, which manufacturer determining that there written relevant data, views, or is applicable to Sikorsky Model S–61L, may be arm assemblies in service that arguments about this proposal. Send S–61N, S–61NM, and S–61R have accumulated 15,000 or more hours your comments to an address listed helicopters, failed to include the life time-in-service (TIS), which exceeds the under the ADDRESSES section. Include limit of the redesigned arm assembly. service life limit for this component. ‘‘Docket No. FAA–2020–0920; Project As a result, Sikorsky Aircraft Identifier AD–2020–00662–R’’ at the This proposed AD would require Corporation determined that there may beginning of your comments. The most reviewing the mixer unit component log be arm assemblies in service with helpful comments reference a specific card or equivalent record and, 15,000 or more hours TIS, which portion of the proposal, explain the depending on the number of hours TIS, exceeds the service life limit for this reason for any recommended change, calculating the remaining life of the arm component. The proposed actions are and include supporting data. The FAA assembly or removing the arm assembly intended to prevent an arm assembly will consider all comments received by from service. The FAA is proposing this from remaining in service beyond its life the closing date and may amend this AD to address the unsafe condition on limit. This condition, if not addressed, these products. NPRM because of those comments. Except for Confidential Business could result in reduced or loss of tail DATES: The FAA must receive comments Information as described in the rotor control and reduced control of the on this proposed AD by December 10, following paragraph, and other helicopter. 2020. information as described in 14 CFR FAA’s Determination ADDRESSES: You may send comments, 11.35, the FAA will post all comments using the procedures found in 14 CFR received, without change, to https:// The FAA is issuing this NPRM 11.43 and 11.45, by any of the following www.regulations.gov, including any because the agency has determined that methods: personal information you provide. The the unsafe condition described • Federal eRulemaking Portal: Go to agency will also post a report previously is likely to exist or develop https://www.regulations.gov. Follow the summarizing each substantive verbal in other products of the same type instructions for submitting comments. contact received about this proposal. design. • Fax: 202–493–2251. • Confidential Business Information Related Service Information Under 1 Mail: U.S. Department of CFR Part 51 Transportation, Docket Operations, M– Confidential Business Information 30, West Building Ground Floor, Room (CBI) is commercial or financial The FAA reviewed Sikorsky S–61 W12–140, 1200 New Jersey Avenue SE, information that is both customarily and Helicopter ASB 61B40–11, Basic Issue, Washington, DC 20590. actually treated as private by its owner. dated March 2, 2020 (‘‘the ASB’’). The • Hand Delivery: Deliver to Mail Under the Freedom of Information Act ASB describes procedures for a one-time address above between 9 a.m. and 5 (FOIA) (5 U.S.C. 552), CBI is exempt inspection of the mixer unit component p.m., Monday through Friday, except from public disclosure. If your log card to verify the arm assembly life Federal holidays. comments responsive to this NPRM limit and, if the life limit has been For service information identified in contain commercial or financial exceeded, to replace the arm assembly this NPRM, contact Sikorsky Aircraft information that is customarily treated for Sikorsky Model S–61L, S–61N, and Corporation, 6900 Main Street, P.O. Box as private, that you actually treat as S–61NM helicopters. This service 9729, Stratford, CT 06615; phone: 203– private, and that is relevant or information is reasonably available 386–4000. You may view this service responsive to this NPRM, it is important because the interested parties have information at the FAA, Office of the that you clearly designate the submitted access to it through their normal course Regional Counsel, Southwest Region, comments as CBI. Please mark each of business or by the means identified 10101 Hillwood Pkwy., Room 6N–321, page of your submission containing CBI in the ADDRESSES section.

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Other Related Service Information depending on the hours time-in-service 61A, S–61D, S–61E, and S–61V The FAA reviewed Sikorsky S–61 of the arm assembly, calculating the restricted category helicopters. The FAA Helicopter ASB 61B General–1, remaining life of the arm assembly or is proposing to expand the applicability Revision AA, dated February 24, 2020. removing the arm assembly from to prevent the installation of arm This service information summarizes service. assemblies that have exceeded their life limits on helicopters with a similar type and lists parts with mandatory Differences Between This Proposed AD design as those helicopters affected by retirement times and inspections for and the Service Information Sikorsky Model S–61L, S–61N, and S– the ASB. 61NM helicopters. The ASB is effective only for Sikorsky Costs of Compliance Aircraft Model S–61L, S–61N, and S– Proposed AD Requirements in This 61NM helicopters. In addition to these The FAA estimates that this AD, as NPRM helicopters, the applicability of this proposed, would affect 13 helicopters of This proposed AD would require proposed AD also includes Sikorsky U.S. registry. reviewing the mixer unit component log Aircraft Model S–61R helicopters and The FAA estimates the following card or equivalent record and, Sikorsky Aircraft Corporation Model S– costs to comply with this proposed AD:

ESTIMATED COSTS

Cost per Cost on U.S. Action Labor cost Parts cost product operators

Review mixer unit component log or equiva- 1 work-hour × $85 per hour = $85 ...... $0 $85 $1,105 lent record.

The FAA estimates the following based on the results of the proposed determining the number of helicopters costs to do any necessary log entry or mixer unit component log or equivalent that might need this log entry or replacement that would be required record review. The FAA has no way of replacement:

ON-CONDITION COSTS

Cost per Action Labor cost Parts cost product

Add arm assembly entry and determine remaining life 1 work-hour × $85 per hour = $85 ...... $0 $85 Replace arm assembly ...... 9 work-hours × $85 per hour = $765 ...... 5,035 5,800

According to the manufacturer, some develop on products identified in this The Proposed Amendment of the costs of this proposed AD may be rulemaking action. Accordingly, under the authority covered under warranty, thereby Regulatory Findings delegated to me by the Administrator, reducing the cost impact on affected the FAA proposes to amend 14 CFR part individuals. The FAA does not control The FAA determined that this 39 as follows: warranty coverage for affected proposed AD would not have federalism individuals. As a result, the FAA has implications under Executive Order PART 39—AIRWORTHINESS included all costs in the cost estimate. 13132. This proposed AD would not DIRECTIVES Authority for This Rulemaking have a substantial direct effect on the States, on the relationship between the ■ 1. The authority citation for part 39 Title 49 of the United States Code national Government and the States, or continues to read as follows: specifies the FAA’s authority to issue on the distribution of power and Authority: 49 U.S.C. 106(g), 40113, 44701. rules on aviation safety. Subtitle I, responsibilities among the various section 106, describes the authority of levels of government. § 39.13 [Amended] the FAA Administrator. Subtitle VII: ■ 2. The FAA amends § 39.13 by adding For the reasons discussed above, I the following new airworthiness Aviation Programs, describes in more certify this proposed regulation: detail the scope of the Agency’s directive (AD): (1) Is not a ‘‘significant regulatory authority. Sikorsky Aircraft and Sikorsky Aircraft action’’ under Executive Order 12866, The FAA is issuing this rulemaking Corporation: Docket No. FAA–2020– under the authority described in (2) Will not affect intrastate aviation 0920; Project Identifier AD–2020–00662– Subtitle VII, Part A, Subpart III, Section in Alaska, and R. 44701: General requirements. Under (3) Will not have a significant (a) Comments Due Date that section, Congress charges the FAA economic impact, positive or negative, The FAA must receive comments by with promoting safe flight of civil on a substantial number of small entities December 10, 2020. under the criteria of the Regulatory aircraft in air commerce by prescribing (b) Affected ADs regulations for practices, methods, and Flexibility Act. None. procedures the Administrator finds List of Subjects in 14 CFR Part 39 necessary for safety in air commerce. (c) Applicability This regulation is within the scope of Air transportation, Aircraft, Aviation This AD applies to Sikorsky Aircraft Model that authority because it addresses an safety, Incorporation by reference, S–61L, S–61N, S–61NM, and S–61R unsafe condition that is likely to exist or Safety. helicopters and Sikorsky Aircraft Corporation

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Model S–61A, S–61D, S–61E, and S–61V this AD, may only perform a maintenance A–3, MBB–BK117 A–4, MBB–BK117 B– helicopters, certificated in any category check or a one-time ferry flight to a location 1, MBB–BK117 B–2, MBB–BK117 C–1, including restricted, with an arm assembly, where the affected arm assembly can be and MBB–BK117 C–2 helicopters. This part number S6140–62614–009, installed. removed from service. This ferry flight must proposed AD would require inspecting be performed with only essential flight crew. (d) Subject the tail gearbox (TGB) bellcrank Joint Aircraft System Component (JASC) (j) Alternative Methods of Compliance attachment arm (arm) for a crack. This Code 6720, Tail Rotor Control System. (AMOCs) proposed AD was prompted by a report (1) The Manager, Boston ACO Branch, of a cracked TGB arm. The actions of (e) Unsafe Condition FAA, has the authority to approve AMOCs this proposed AD are intended to This AD was prompted by the for this AD, if requested using the procedures address an unsafe condition on these manufacturer determining that there may be found in 14 CFR 39.19. In accordance with products. arm assemblies in service with 15,000 or 14 CFR 39.19, send your request to your more hours time-in-service (TIS), which principal inspector or local Flight Standards DATES: The FAA must receive comments exceeds the life limit for this component. The District Office, as appropriate. If sending on this proposed AD by December 10, FAA is issuing this AD to prevent reduced information directly to the manager of the 2020. or loss of tail rotor control. This unsafe certification office, send it to the attention of condition, if not addressed, could result in the person identified in paragraph (k)(1) of ADDRESSES: You may send comments by reduced control of the helicopter. this AD. any of the following methods: (2) Before using any approved AMOC, • (f) Compliance Federal eRulemaking Docket: Go to notify your appropriate principal inspector, https://www.regulations.gov. Follow the Comply with this AD within the or lacking a principal inspector, the manager online instructions for sending your compliance times specified, unless already of the local flight standards district office/ comments electronically. done. certificate holding district office. • Fax: 202–493–2251. (g) Required Action (k) Related Information • Mail: Send comments to the U.S. (1) Within 90 days after the effective date (1) For more information about this AD, Department of Transportation, Docket of this AD, review the mixer unit component contact Neil Doh, Aerospace Engineer, Operations, M–30, West Building log card or equivalent record to determine if Boston ACO Branch, FAA, 1200 District Ground Floor, Room W12–140, 1200 the affected arm assembly is entered with the Avenue, Burlington, MA 01803; phone: 781– New Jersey Avenue SE, Washington, DC appropriate 15,000 hours TIS life limit. 238–7757; fax: 781–238–7199; email: 20590–0001. (2) If the affected arm assembly is not [email protected]. • included on the mixer unit component log (2) For service information identified in Hand Delivery: Deliver to the card or equivalent record, within 90 days this AD, contact Sikorsky Aircraft ‘‘Mail’’ address between 9 a.m. and 5 after the effective date of this AD, add the Corporation, 6900 Main Street, P.O. Box p.m., Monday through Friday, except arm assembly entry to the mixer unit 9729, Stratford, CT 06615; phone: 203–386– Federal holidays. component log card or equivalent record and 4000. You may view this referenced service determine the remaining life of the arm information at the FAA, Office of the Examining the AD Docket assembly using the Accomplishment Regional Counsel, Southwest Region, 10101 You may examine the AD docket on Instructions, Section 3.A.(3) of Sikorsky S–61 Hillwood Pkwy., Room 6N–321, Fort Worth, Helicopter Alert Service Bulletin (ASB) the internet at https:// TX 76177. For information on the availability www.regulations.gov by searching for 61B40–11, Basic Issue, dated March 2, 2020 of this material at the FAA, call 817–222– (‘‘the ASB’’). 5110. and locating Docket No. FAA–2020– (3) If, based on the review required by 0967; or in person at Docket Operations paragraphs (g)(1) and (2) of this AD, the arm Issued on October 14, 2020. between 9 a.m. and 5 p.m., Monday assembly has accumulated 15,000 or more Lance T. Gant, through Friday, except Federal holidays. hours TIS, before further flight, remove the Director, Compliance & Airworthiness The AD docket contains this proposed arm assembly from service. If the hours TIS Division, Aircraft Certification Service. AD, the European Aviation Safety for the affected arm assembly cannot be [FR Doc. 2020–23466 Filed 10–23–20; 8:45 am] determined, before further flight, remove the Agency (now European Union Aviation affected arm assembly from service. BILLING CODE 4910–13–P Safety Agency) (EASA) AD, any (4) For arm assemblies that have not comments received, and other accumulated 15,000 or more hours TIS, information. The street address for thereafter, continue to determine the DEPARTMENT OF TRANSPORTATION Docket Operations is listed above. remaining life of the arm assembly and Comments will be available in the AD remove the arm assembly from service before Federal Aviation Administration docket shortly after receipt. it accumulates 15,000 hours TIS. For service information identified in 14 CFR Part 39 (h) Credit for Previous Actions this proposed rule, contact Airbus You may take credit for adding the arm [Docket No. FAA–2020–0967; Product Helicopters, 2701 N Forum Drive, Grand assembly entry to the mixer unit component Identifier 2018–SW–013–AD] Prairie, TX 75052; telephone 972–641– log card or equivalent record and RIN 2120–AA64 0000 or 800–232–0323; fax 972–641– determining the remaining life of the arm 3775; or at https://www.airbus.com/ assembly required by paragraphs (g)(1) and Airworthiness Directives; /services/technical- (2) of this AD if you performed these actions Helicopters Deutschland GmbH support.html. You may view the before the effective date of this AD using referenced service information at the Sikorsky S–61 Helicopter ASB 61B General– Helicopters 1, Revision AA, dated February 24, 2020. FAA, Office of the Regional Counsel, AGENCY: Federal Aviation Southwest Region, 10101 Hillwood (i) Special Flight Permit Administration (FAA), DOT. Pkwy., Room 6N–321, Fort Worth, TX Special flight permits, as described in ACTION: Notice of proposed rulemaking 76177. Section 21.197 and Section 21.199 of the (NPRM). Federal Aviation Regulations (14 CFR 21.197 FOR FURTHER INFORMATION CONTACT: and 21.199), are subject to the requirements SUMMARY: The FAA proposes to adopt a David Hatfield, Aviation Safety of paragraph (g)(3) of this AD. Operators who new airworthiness directive (AD) for Engineer, Safety Management Section, are prohibited from further flight due to Airbus Helicopters Deutschland GmbH Rotorcraft Standards Branch, FAA, exceeding the life limit in paragraph (g)(3) of Model MBB–BK117 A–1, MBB–BK117 10101 Hillwood Pkwy., Fort Worth, TX

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