Background \n\n\n\tThe FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to Helicopteres Guimbal (HG) Model Cabri G2 helicopters, certificated in any category, with any metal bushings installed on the main rotor (M/R) swashplate guide bellcrank and without plastic bushing part number HG22-1001 or HG modification 16-009. The NPRM published in the Federal Register on July 9, 2021 (86 FR 36241). In the NPRM, the FAA proposed to require within 50 hours time-in-service or 2 months, whichever occurs first after the effective date of this AD, disconnecting the bellcrank from the swashplate guide, removing each bolt and using a certain tool, removing certain parts from service. The NPRM also proposed to require visually inspecting the lug bore area for corrosion and cracks and depending on the inspection results, removing certain parts from service, or repairing the area using an FAA-approved method, installing certain part-numbered plastic bushings, coating the area with a compound, reinstalling certain parts, applying a specified torque, and installing cotter pins. The NPRM was prompted by EASA AD 2019-0185, dated July 30, 2019 (EASA AD 2019-0185), issued by EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for Helicopteres Guimbal Model Cabri G2 helicopters. EASA advises that during scheduled maintenance on several helicopters, cracks were found on the M/R scissor link due to corrosion. EASA states this corrosion was caused by stress induced by the mounting of the metal bushing inside the lug hole. EASA further states metal bushings are also installed on the M/R swashplate guide bellcrank, where similar cracking may occur. This condition, if not addressed, could result in failure of the M/R swashplate guide bellcrank and reduced control of the helicopter. \n\tAccordingly, EASA AD 2019-0185 requires replacing any part-numberedmetal bushing with plastic bushing part number (P/N) HG22-1001. EASA AD 2019-0185 also prohibits installing any part-numbered metal bushing on the M/R swashplate guide bellcrank other than P/N HG22-1001 on any helicopter. \n\nDiscussion of Final Airworthiness Directive \n\nComments \n\n\n\tThe FAA received no comments on the NPRM or on the determination of the costs. \n\nConclusion \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 reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. \n\nRelated Service Information \n\n\n\tThe FAA reviewed Guimbal Service Bulletin SB 17-003, Revision D, dated August 27, 2019 (SB 17-003 Rev D). This service information specifies disconnecting the bellcrank installed on the swashplate guide by removing the bolts that connect the bellcrank to the swashplate guide, removing any existing bushings, and visually inspecting the lug bore area for corrosion or cracks. This service information also specifies if there is any corrosion or cracks, reporting the information to HG support, installing the new plastic bushings, reinstalling the bellcrank, applying a specified torque, and installing cotter pins. \n\nOther Related Service Information \n\n\n\tThe FAA also reviewed Guimbal Service Bulletin SB 17-003, Revision C, dated July 12, 2019 (SB 17-003 Rev C). SB 17-003 Rev C specifies the same procedures as SB 17-003 Rev D, except SB 17-003 Rev D updates the reference to EASA AD 2019-0185. \n\nDifferences Between This AD and EASA AD 2019-0185 \n\n\n\tEASA AD 2019-0185 applies to all Model Cabri G2 helicopters, whereas this AD only applies to Model Cabri G2 helicopters with any metal bushings installed and without HG modification 16-009. The service information required by the EASA AD requires contacting Helicopteres Guimbal for corrective actions when corrosion or cracks are found in the lug bore area whereas this AD requires removing the swashplate guide from service or repairing it using an FAA-approved method. \n\nCosts of Compliance \n\n\n\tThe FAA estimates that this AD affects 32 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\tDisconnecting the bellcrank, removing each metal bushing and visually inspecting for corrosion and \n\n((Page 49909)) \n\ncracks would take about 0.5 work-hours for an estimated cost of $43 per inspection cycle. \n\tInstalling each plastic bushing, coating with compound, re- installing the bellcrank, and applying torque would take about 0.5 work-hours and parts would cost about $10 for an estimated cost of $53 per helicopter. \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 helicopters identified in this rulemaking action. \n\nRegulatory Findings \n\n\n\tThis AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect onthe 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 above, I certify that this AD: \n\t(1) Is not a ''significant regulatory action'' under Executive Order 12866, \n\t(2) Will not affect intrastate aviation in Alaska, and \n\t(3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. \n\nList of Subjects in 14 CFR Part 39 \n\n\n\tAir transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.