Background \n\n\n\tThe FAA issued AD 2020-19-02, Amendment 39-21243 (85 FR 59416, September 22, 2020) (AD 2020-19-02), for certain Airbus Helicopters (previously Eurocopter France) Model SA330J helicopters. AD 2020-19-02 required, for each T/R blade part number (P/N) 330A12-0005-(all dash numbers) and 330A12-0006-(all dash numbers), repetitively accomplishing a visual and in-depth inspection for debonding and eddy current inspecting for a crack. If there was debonding within allowable limits, AD 2020-19-02 required repairing or replacing the T/R blade. If there was debonding that exceeded allowable limits or a crack, AD 2020-19-02 required replacing the T/R blade. AD 2020-19-02 also prohibited installing an affected T/R blade unless it passed the inspections. AD 2020-19-02 was prompted by EASA AD No. 2016-0059-E, dated March 22, 2016 (EASA AD 2016-0059-E), issued by the EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for Airbus Helicopters (formerly Eurocopter, Eurocopter France, Aerospatiale) Model SA 330 J helicopters. EASA AD 2016-0059-E retains the requirements of Direction Generale de l'Aviation Civile (DGAC) France AD 87-032-052(B)R3, dated January 23, 1991, which it supersedes, and also mandates improved service instructions. EASA advises of two reports of cracked metal T/R blade skin, which subsequently led to rotor blade vibrations and forced landing of the helicopter. According to EASA, this condition, if not addressed, could result in additional occurrences of T/R blade structural damage, possibly resulting in significant vibrations and reduced control of the helicopter. \n\n((Page 9270)) \n\nActions Since AD 2020-19-02 Was Issued \n\n\n\tSince the FAA issued AD 2020-19-02, it was identified that the compliance time for the initial visual inspection of T/R blade P/N 330A12-0006-(all dash numbers) (with a de-icing system) was inadvertently stated as within 30 hourstime-in-service (TIS). This final rule corrects this compliance time to within 15 hours TIS. \n\tSince the FAA issued AD 2020-19-02, it was also identified that the parts prohibition requirement could cause confusion about when the inspections must be accomplished prior to installation. This final rule clarifies this. \n\tAdditionally, this final rule clarifies the applicability by identifying that T/R blade P/N 330A12-0005-(all dash numbers) is without a de-icing system installed and that T/R blade P/N 330A12-0006- (all dash numbers) is with a de-icing system installed. This final rule also clarifies the required actions by adding the P/Ns. \n\nFAA's Determination \n\n\n\tThese helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAA's bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA is proposing this AD after evaluating all known relevant information and determining that the unsafe condition described previously is likely to exist or develop on other helicopters of the same type design. \n\nRelated Service Information Under 1 CFR Part 51 \n\n\n\tThe FAA reviewed Airbus Helicopters Emergency Alert Service Bulletin No. 05.101, Revision 0, dated March 21, 2016, for Model SA330J helicopters with certain T/R blades with and without a de-icing system installed. This service information specifies procedures for a visual and in-depth inspection of the T/R blades for skin debonding and an eddy current inspection of the T/R blades for a crack using various crack detectors. \n\tThis 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. \n\nAD Requirements \n\n\n\tThis AD requires, for T/R blade P/N 330A12-0006-(all dash numbers) (with a de-icing system), within 15 hours TIS after the effective date of this AD or within 15 hours TIS after last inspecting the T/R blade as required by paragraph (f)(1) of AD 2020-19-02, whichever occurs first, and thereafter at intervals not to exceed 15 hours TIS; and for T/R blade P/N 330A12-0005-(all dash numbers) (without a de-icing system), within 30 hours TIS after the effective date of this AD, or within 30 hours TIS after last inspecting the T/R blade as required by paragraph (f)(1) of AD 2020-19-02, whichever occurs first, and thereafter at intervals not to exceed 30 hours TIS: \n\tAccomplishing a visual and in-depth inspection of each T/R blade for debonding. If there is debonding within allowable limits, this AD requires repairing or replacing the T/R blade. If there is debonding that exceeds allowable limits, this AD requires replacing the T/R blade. \n\tEddy current inspecting each T/R blade for a crack. If there is a crack, this AD requires replacing the T/R blade. \n\tThis AD also prohibits installing an affected T/R blade on any helicopter unless it passes the inspections required by this AD. \n\nDifferences Between This AD and the EASA AD \n\n\n\tThe EASA AD requires returning a T/R blade with a discrepancy to Airbus Helicopters; whereas this AD requires repairing or replacing the T/R blade if there is debonding within allowable limits and replacing the T/R blade if there is debonding that exceeds allowable limits or a crack instead. \n\nJustification for Immediate Adoption and Determination of the Effective Date \n\n\n\tSection 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 lessthan thirty days, upon a finding of good cause. \n\tAn 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 foregoing notice and comment prior to adoption of this rule because the initial instance of the repetitive inspections must be completed within 15 or 30 hours TIS, a time period of up to approximately two months based on the average flight-hour utilization rates of these helicopters. Accordingly, 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). \n\tIn 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 forego notice and comment. \n\nComments Invited \n\n\n\tThe 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-2021-0027; Project Identifier MCAI- 2021-00048-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. \n\tExcept 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 https://www.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. \n\nConfidential Business Information \n\n\n\tCBI is commercial or financial information that is both customarily and actually treated asprivate 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 Matt Fuller, AD Program Manager, General Aviation & Rotorcraft Unit, Airworthiness Products Section, Operational Safety Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email matthew.fuller@faa.gov. Any commentary that the FAA receives which is not specifically designated as \n\n((Page 9271)) \n\nCBI will be placed in the public docket for this rulemaking. \n\nRegulatory Flexibility Act \n\n\n\tThe 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 prior notice and comment, RFA analysis is not required. \n\nCosts of Compliance \n\n\n\tThe FAA estimates that this AD affects 17 helicopters of U.S. Registry. Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates the following costs to comply with this AD. \n\tInspecting the T/R blades for debonding takes about 0.75 work-hour for an estimated cost of $64 per helicopter and $1,088 for the U.S. fleet, per inspection cycle. Eddy current inspecting the T/R blades for a crack takes about 1.75 work-hours for an estimated cost of $149 per helicopter and $2,533 for the U.S. fleet, per inspection cycle. \n\tIf required, replacing a T/R blade takes about 4 work-hours and parts cost about $19,000, for an estimated cost of $19,340. \n\nAuthority for This Rulemaking \n\n\n\tTitle 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. \n\tThe 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. \n\nRegulatory FindingsThis 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. \n\tFor the reasons discussed, I certify that this AD: \n\t(1) Is not a ''significant regulatory action'' under Executive Order 12866, and \n\t(2) Will not affect intrastate aviation in Alaska. \n\nList of Subjects in 14 CFR Part 39 \n\n\n\tAir transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.