Airworthiness Directives; Airbus Helicopters, 13633-13637 [2021-04806]

Download as PDF Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations (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. 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 adding the following new airworthiness directive: ■ 2021–04–16 Amendment 39–21438; Docket No. FAA–2020–0791; Project Identifier AD–2020–00676–R. (a) Effective Date This airworthiness directive (AD) is effective April 14, 2021. (c) Applicability This AD applies to Sikorsky Aircraft Corporation (Sikorsky) Model S–92A helicopters, certificated in any category, with serial numbers (S/Ns) 920006 through 920334 inclusive. (d) Subject Joint Aircraft System Component (JASC) Code 3220, Nose/Tail Landing Gear; 3210, Main Landing Gear. (e) Unsafe Condition This AD was prompted by the manufacturer determining that because of non-conforming threads, due to a quality escape, the life limit of the threaded hinge pin and main landing gear (MLG) and nose landing gear (NLG) actuator pins is reduced. The FAA is issuing this AD to prevent failure of components on the MLG and NLG. The unsafe condition, if not addressed, could result in damage to the helicopter and reduced ability to control the helicopter during landing. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Within 300 hours time in service after the effective date of this AD, visually inspect the components of the right MLG assembly, left 16:13 Mar 09, 2021 Jkt 253001 (h) Installation Prohibition As of the effective date of this AD, do not install any threaded hinge pin, P/N 92250– 12281–101, or actuator pin, P/N 92240– 12287–101 or 92240–12287–103, with an S/ N listed in Table 1 or 2 in Section 3, the Accomplishment Instructions, in the ASB, on any helicopter. (i) Alternative Methods of Compliance (AMOCs) (b) Affected ADs None. VerDate Sep<11>2014 MLG assembly, and NLG kit for threaded hinge pins, part number (P/N) 92250–12281– 101, and actuator pins, P/N 92240–12287– 101 and 92240–12287–103, with serial numbers (S/Ns) identified in Table 1 or 2 (threaded hinge pins) or in Table 1 (actuator pins), in Section 3, the Accomplishment Instructions, in the Sikorsky Aircraft Corporation Alert Service Bulletin (ASB) 92– 32–008, Basic Issue, dated January 21, 2020 (the ASB). Note 1 to the introductory text of paragraph (g): See Figures 1 and 2 in Section 3, the Accomplishment Instructions, in the ASB for guidance on performing the visual inspection. (1) If there is any threaded hinge pin, P/ N 92250–12281–101, with an S/N listed in Table 1 or 2 in the ASB, before further flight, remove the threaded hinge pin from service. (2) If there is any MLG or NLG actuator pin, P/N 92250–12287–101 or P/N 92250– 12287–103, with an S/N listed in Table 1 in the ASB, before further flight, remove the actuator pin from service. (1) The Manager, Boston ACO 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 certification office, send it to the attention of the person identified in paragraph (j)(1) of this AD. (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. For more information about this AD, contact Dorie Resnik, Aerospace Engineer, Boston ACO Branch, Compliance & Airworthiness Division, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781– 238–7693; fax: 781–238–7199; email: dorie.resnik@faa.gov. You may view the related service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222–5110. (k) 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. Frm 00005 Fmt 4700 (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Sikorsky Aircraft Corporation Alert Service Bulletin 92–32–008, Basic Issue, dated January 21, 2020. (ii) [Reserved] (3) For Sikorsky service information identified in this AD, contact Sikorsky Aircraft Corporation, Commercial Systems and Services, 124 Quarry Road, Trumbull, CT 06611; phone: 203–416–4000; email: product_safety.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at: https://customerportal.sikorsky.com. (4) You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222–5110. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ ibr-locations.html. Issued on February 9, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–04940 Filed 3–9–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0847; Product Identifier 2018–SW–087–AD; Amendment 39–21434; AD 2021–04–13] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: (j) Related Information PO 00000 13633 Sfmt 4700 The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, and AS350D helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and Model EC130 B4 and EC130 T2 helicopters. This AD requires a one-time inspection to verify the presence and correct installation of the main rotor mast (MRM) upper bearing retaining rings, a repetitive inspection of the sealant bead on the MRM for damage, and corrective actions if necessary. This AD was prompted by a SUMMARY: E:\FR\FM\10MRR1.SGM 10MRR1 13634 Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations report of a missing retaining ring of the inner race of the MRM upper bearing. The actions of this AD are intended to address an unsafe condition on these products. DATES: This AD is effective April 14, 2021. The Director of the Federal Register approved the incorporation by reference of certain documents listed in this AD as of April 14, 2021. ADDRESSES: For service information identified in this final rule, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone 972–641–0000 or 800–232– 0323; fax 972–641–3775; or at https:// www.airbus.com/helicopters/services/ technical-support.html. You may view the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. It is also available on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2020–0847. Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0847; 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 AD, the European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, any service information that is incorporated by reference, any comments received, and other information. The street address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Scott Franke, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5110; email scott.franke@faa.gov. SUPPLEMENTARY INFORMATION: Discussion The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, and AS350D helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and Model EC130 B4 and EC130 T2 helicopters. The VerDate Sep<11>2014 16:13 Mar 09, 2021 Jkt 253001 NPRM published in the Federal Register on September 21, 2020 (85 FR 59217). The NPRM proposed to require a one-time inspection to verify the presence and correct installation of the MRM upper bearing retaining rings, a repetitive inspection of the sealant bead on the MRM for damage, and corrective actions if necessary. The proposed requirements were intended to detect, and correct if applicable, a missing retaining ring of the inner race of the MRM upper bearing. The FAA is issuing this AD to address this condition, which, if not detected and corrected, can lead to damage to the MRM and surrounding elements, possibly resulting in loss of control of the helicopter. The NPRM was prompted by EASA AD 2018–0206, dated September 20, 2018 (EASA AD 2018–0206), issued by EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for certain Airbus Helicopters Model AS350B, AS350BA, AS350BB, AS350B1, AS350B2, AS350B3, and AS350D helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and Model EC130 B4 and EC130 T2 helicopters. Model AS355BB helicopters are not certificated by the FAA and are not included on the U.S. type certificate data sheet; this AD therefore does not include those helicopters in the applicability. EASA advises that during a scheduled inspection on an Airbus Helicopters Model AS350B3 helicopter, one of the two retaining rings of the inner race of the MRM upper bearing was found missing. These two retaining rings ensure that the inner race is correctly positioned with respect to the rollers, and, if one or both of these retaining rings are missing, it can lead to an unlimited shift of the inner race and compromise the function of the MRM upper bearing. This condition, if not detected and corrected, can lead to damage to the MRM and surrounding elements, possibly resulting in loss of control of the helicopter. Airbus Helicopters developed an inspection to check that the upper and lower retaining rings of the inner race of the MRM upper bearing are present and correctly installed. EASA determined that the same condition may exist or develop on Airbus Helicopters Model AS350 helicopters, Model AS355 helicopters, and Model EC130 helicopters because they share a similar design and supply chain. Until the check of the upper and lower bearing retaining rings is accomplished, EASA specifies that repetitive inspections of the MRM upper bearing sealant bead PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 (sealant bead) should be accomplished to ensure the MRM remains serviceable. EASA considers its AD an interim measure pending further investigation results, and notes that further AD action may follow. Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received 4 comments in support of the NPRM. FAA’s Determination These 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 issuing this AD after evaluating all of the information provided by EASA and determining the unsafe condition exists and is likely to exist or develop on other helicopters of the same type design and that air safety and the public interest require adopting the AD requirements as proposed. Differences Between This AD and the EASA AD Although EASA AD 2018–0206 specifies accomplishing the inspection of the installation of the MRM upper bearing inner race retaining rings within 660 hours time in service (TIS) or 24 months, whichever occurs first, the FAA has determined that interval does not address the identified unsafe condition soon enough to ensure an adequate level of safety for the affected fleet. In developing an appropriate compliance time for this AD, the FAA considered the degree of urgency associated with the subject unsafe condition and the manufacturer’s recommendation. In light of all of these factors, the FAA finds that a compliance time of within 660 hours TIS or 6 months, whichever occurs first, represents an appropriate interval of time for affected helicopters to continue to operate without compromising safety. Although paragraph (5) of EASA AD 2018–0206 specifies that operators may contact the manufacturer for instructions if there are signs of degradation on the MRM inner race, paragraph (i)(3) of this AD requires operators to repair or replace the MRM if there is any degradation as indicated by damage to the retaining rings (including but not limited to cracks, scratches, and gouges), deterioration, or wear. E:\FR\FM\10MRR1.SGM 10MRR1 Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations Related Service Information Under 1 CFR Part 51 Airbus Helicopters has issued the following service information. • Airbus Helicopters Alert Service Bulletin AS350–62.00.42, Revision 0, dated September 17, 2018. • Airbus Helicopters Alert Service Bulletin AS355–62.00.37, Revision 0, dated September 17, 2018. • Airbus Helicopters Alert Service Bulletin EC130–62A017, Revision 0, dated September 17, 2018. This service information describes procedures for a one-time inspection to verify presence and correct installation of the MRM upper bearing retaining rings, a repetitive inspection of the sealant bead on the MRM for damage, and corrective actions. Damage of the sealant bead includes flaws, cracks, folds, separation, or absence of the sealant bead. Corrective actions include repair and replacement. These documents are distinct since they apply to different helicopter models. 13635 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. Costs of Compliance The FAA estimates that this AD affects 1,212 helicopters of U.S. registry. The FAA estimates the following costs to comply with this AD: ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost Up to 30 work-hours × $85 per hour = Up to $2,550 .............. The FAA estimates the following costs to do any necessary on-condition actions that would be required based on Cost on U.S. operators Cost per product $0 Up to $2,550 ........................... the results of any required actions. The FAA has no way of determining the Up to $3,090,600. number of aircraft that might need these on-condition actions: ESTIMATED COSTS OF ON-CONDITION ACTIONS Labor cost Parts cost Up to 80 work-hours × $85 per hour = Up to $6,800 ............................. Up to $33,124 ................................ 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 helicopters identified in this rulemaking action. Regulatory Findings 16:13 Mar 09, 2021 List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of 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: ■ 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. VerDate Sep<11>2014 For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and (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. Jkt 253001 Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive. ■ 2021–04–13 Airbus Helicopters: Amendment 39–21434; Docket No. PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 Cost per product Up to $39,924. FAA–2020–0847; Product Identifier 2018–SW–087–AD. (a) Effective Date This Airworthiness Directive (AD) becomes effective April 14, 2021. (b) Affected ADs None. (c) Applicability This AD applies to all Airbus Helicopters, certificated in any category, as identified in paragraphs (c)(1) through (3) of this AD. (1) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, and AS350D helicopters. (2) Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. (3) Model EC130 B4 and EC130 T2 helicopters. (d) Subject Joint Aircraft Service Component (JASC) Code 6230, Main Rotor Mast Inner Race Rings. (e) Reason This AD was prompted by a report of a missing retaining ring of the inner race of the main rotor mast (MRM) upper bearing. The FAA is issuing this AD to address this condition, which, if not detected and corrected, can lead to damage to the MRM and surrounding elements, possibly resulting in loss of control of the helicopter. (f) Compliance You are responsible for performing each action required by this AD within the E:\FR\FM\10MRR1.SGM 10MRR1 Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations specified compliance time unless it has already been accomplished prior to that time. (g) Definitions (1) For the purposes of this AD, an affected part is any MRM having part number (P/N) 350A37–1290–XX (where XX can be any numerical combination) and a serial number as listed in Airbus Helicopters Alert Service Bulletin AS350–62.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355–62.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130– 62A017, Revision 0, dated September 17, 2018, as applicable to your model helicopter, Note 1 to paragraph (h)(1): Unless specified otherwise, the hours TIS specified in figure 1 to paragraph (h) of this AD are those accumulated on the effective date of this AD by the helicopter since first flight. (2) If, during any inspection of the MRM upper bearing sealant bead as required by paragraph (h)(1) of this AD, there is damage, before further flight, inspect the installation of the MRM upper bearing inner race retaining rings for discrepancies in accordance with paragraph (i)(1) of this AD. (i) MRM Inner Race Retaining Rings Inspection (1) For Group 1 Helicopters: Within 660 hours TIS or 6 months, whichever occurs first after the effective date of this AD: Inspect the installation of the MRM upper bearing inner race retaining rings for discrepancies in accordance with the Accomplishment Instructions of section 3.B.2.b of Airbus Helicopters Alert Service Bulletin AS350 62.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355–62.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130– 62A017, Revision 0, dated September 17, 2018, as applicable to your model helicopter, except you are not required to discard the plastic clamps (Item vv). For the purposes of this inspection, discrepancies may be indicated by incorrect positioning or missing rings. (2) If, during the inspection required by paragraph (i)(1) of this AD there are any discrepancies, before further flight, remove the affected part, inspect the MRM inner race for degradation, and replace the retaining rings in accordance with the Accomplishment Instructions of section VerDate Sep<11>2014 16:13 Mar 09, 2021 Jkt 253001 unless the upper bearing inner race retaining rings are verified to be installed correctly as specified in the inspection required in paragraph (i)(1) of this AD. (2) For the purposes of this AD, a Group 1 helicopter is one on which an affected part is installed. (3) For the purposes of this AD, a Group 2 helicopter is one on which an affected part is not installed. (h) MRM Upper Sealant Bead Inspection (1) For Group 1 helicopters, within the compliance time specified in Figure 1 to paragraph (h) of this AD, and, thereafter, at intervals not to exceed 165 hours time-in- 3.B.2.c of Airbus Helicopters Alert Service Bulletin AS350 62.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355–62.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130– 62A017, Revision 0, dated September 17, 2018, as applicable to you model helicopter, except you are not required to return parts to Airbus Helicopters. For the purposes of this inspection, degradation is indicated by damage to the retaining rings (including but not limited to cracks, scratches, and gouges), deterioration, or wear. (3) If, during the inspection of the MRM inner race, as required by paragraph (i)(2) of this AD, there is any degradation, before next flight, repair or replace the MRM. (j) Terminating Action Verification on a helicopter of correct installation of the MRM upper bearing inner race retaining rings, as required by paragraph (i)(1) of this AD, or corrective action on a helicopter, as specified in paragraphs (h)(2), (i)(2), or (i)(3) of this AD, as applicable, constitute terminating action for the repetitive inspections required by paragraph (h)(1) of this AD for that helicopter. (k) Parts Installation Prohibition As of the effective date of this AD, no person may install, on any helicopter, an affected part as identified in paragraph (g)(1) of this AD. (l) Alternative Methods of Compliance (AMOCs) (1) The Manager, International Validation Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Scott Franke, Aviation Safety Engineer, International PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 service (TIS): Inspect the MRM upper bearing sealant bead for damage in accordance with section 3.B.2.a of the Accomplishment Instructions of Airbus Helicopters Alert Service Bulletin AS350–62.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355– 62.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130–62A017, Revision 0, dated September 17, 2018, as applicable to your model helicopter, except you are not required to discard the plastic clamps (Item vv). For the purposes of this inspection, damage may be indicated by flaws, cracks, folds, separation, or absence of the sealant bead. Validation Branch, General Aviation & Rotorcraft Unit, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222– 5110; email 9-AVS-AIR-730-AMOC@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, notify your principal inspector or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC. (m) Related Information The subject of this AD is addressed in European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD 2018–0206, dated September 20, 2018. This EASA AD may be found in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020–0847. (n) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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. (i) Airbus Helicopters Alert Service Bulletin AS350–62.00.42, Revision 0, dated September 17, 2018. (ii) Airbus Helicopters Alert Service Bulletin AS355–62.00.37, Revision 0, dated September 17, 2018. (iii) Airbus Helicopters Alert Service Bulletin EC130–62A017, Revision 0, dated September 17, 2018. E:\FR\FM\10MRR1.SGM 10MRR1 ER10MR21.000</GPH> 13636 Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations (3) For service information identified in this AD, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone 800–232–0323 or Fax: 972–641– 3775; or at https://www.airbus.com/ helicopters/services/technical-support.html. (4) You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222–5110. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https:// www.archives.gov/federal-register/cfr/ibrlocations.html. Issued on February 8, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–04806 Filed 3–9–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0096; Project Identifier MCAI–2021–00040–R; Amendment 39–21440; AD 2021–04–18] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. AGENCY: The FAA is superseding Airworthiness Directive (AD) 2020–23– 02, which applied to all Airbus Helicopters Model EC225LP helicopters. AD 2020–23–02 required repetitive inspections of the bearing in the swashplate assembly of the main rotor mast assembly for discrepancies (ceramic balls that have a hard point or sensitive axial play or both) and, depending on the findings, replacement of an affected main rotor mast assembly with a serviceable main rotor mast assembly. Since the FAA issued AD 2020–23–02, the FAA has determined additional main rotor mast assemblies are affected by the unsafe condition. This AD continues to require the actions specified in AD 2020–23–02, and also includes additional affected main rotor mast assemblies; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD SUMMARY: VerDate Sep<11>2014 16:13 Mar 09, 2021 Jkt 253001 to address the unsafe condition on these products. DATES: This AD becomes effective March 25, 2021. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of March 25, 2021. The FAA must receive comments on this AD by April 26, 2021. 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 https://www.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: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For material incorporated by reference (IBR) in this AD, contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; internet: www.easa.europa.eu. You may find this material on the EASA website at https://ad.easa.europa.eu. You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222–5110. It is also available in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2021– 0096. Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2021– 0096; 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 AD, any comments received, and other information. The street address for Docket Operations is listed above. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Kathleen Arrigotti, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 13637 216th St., Des Moines, WA 98198; phone and fax: 206–231–3218; email: kathleen.arrigotti@faa.gov. SUPPLEMENTARY INFORMATION: Discussion The FAA issued AD 2020–23–02, Amendment 39–21318 (85 FR 73607, November 19, 2020) (AD 2020–23–02), which applied to all Airbus Helicopters Model EC225LP helicopters. AD 2020– 23–02 required repetitive inspections of the bearing in the swashplate assembly of the main rotor mast assembly for discrepancies (ceramic balls that have a hard point or sensitive axial play or both) and, depending on the findings, replacement of an affected main rotor mast assembly with a serviceable main rotor mast assembly. The FAA issued AD 2020–23–02 to address defective ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly, which could lead to premature spalling of the ball itself and of the bearing, loss of function of the bearing, and overload of the main rotor mast scissor, resulting in reduced control of the helicopter. Actions Since AD 2020–23–02 Was Issued Since the FAA issued AD 2020–23– 02, the FAA has determined that additional main rotor mast assemblies are affected by the unsafe condition. The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2020–0264, dated December 2, 2020 (EASA AD 2020–0264) (also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for all Airbus Helicopters Model EC225LP helicopters. EASA AD 2020– 0264 supersedes EASA AD 2020–0079, dated April 1, 2020 (which corresponds to FAA AD 2020–23–02). This AD was prompted by a report of a manufacturing and control issue regarding the ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly. The FAA is issuing this AD to address defective ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly, which could lead to premature spalling of the ball itself and of the bearing, loss of function of the bearing, and overload of the main rotor mast scissor, resulting in reduced control of the helicopter. See the MCAI for additional background information. Explanation of Retained Requirements Although this AD does not explicitly restate the requirements of AD 2020– E:\FR\FM\10MRR1.SGM 10MRR1

Agencies

[Federal Register Volume 86, Number 45 (Wednesday, March 10, 2021)]
[Rules and Regulations]
[Pages 13633-13637]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-04806]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0847; Product Identifier 2018-SW-087-AD; Amendment 
39-21434; AD 2021-04-13]
RIN 2120-AA64


Airworthiness Directives; Airbus Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, 
and AS350D helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, 
and AS355NP helicopters; and Model EC130 B4 and EC130 T2 helicopters. 
This AD requires a one-time inspection to verify the presence and 
correct installation of the main rotor mast (MRM) upper bearing 
retaining rings, a repetitive inspection of the sealant bead on the MRM 
for damage, and corrective actions if necessary. This AD was prompted 
by a

[[Page 13634]]

report of a missing retaining ring of the inner race of the MRM upper 
bearing. The actions of this AD are intended to address an unsafe 
condition on these products.

DATES: This AD is effective April 14, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of certain documents listed in this AD as of April 14, 2021.

ADDRESSES: For service information identified in this final rule, 
contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 
75052; telephone 972-641-0000 or 800-232-0323; fax 972-641-3775; or at 
https://www.airbus.com/helicopters/services/technical-support.html. You 
may view the referenced service information at the FAA, Office of the 
Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, 
Fort Worth, TX 76177. It is also available on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0847.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0847; 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 AD, the European Aviation Safety Agency (now European Union 
Aviation Safety Agency) (EASA) AD, any service information that is 
incorporated by reference, any comments received, and other 
information. The street address for Docket Operations is U.S. 
Department of Transportation, Docket Operations, M-30, West Building 
Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 
20590.

FOR FURTHER INFORMATION CONTACT: Scott Franke, Aviation Safety 
Engineer, General Aviation & Rotorcraft Section, International 
Validation Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; 
telephone 817-222-5110; email [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to all Airbus Helicopters 
Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, and AS350D 
helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and 
AS355NP helicopters; and Model EC130 B4 and EC130 T2 helicopters. The 
NPRM published in the Federal Register on September 21, 2020 (85 FR 
59217). The NPRM proposed to require a one-time inspection to verify 
the presence and correct installation of the MRM upper bearing 
retaining rings, a repetitive inspection of the sealant bead on the MRM 
for damage, and corrective actions if necessary. The proposed 
requirements were intended to detect, and correct if applicable, a 
missing retaining ring of the inner race of the MRM upper bearing. The 
FAA is issuing this AD to address this condition, which, if not 
detected and corrected, can lead to damage to the MRM and surrounding 
elements, possibly resulting in loss of control of the helicopter.
    The NPRM was prompted by EASA AD 2018-0206, dated September 20, 
2018 (EASA AD 2018-0206), issued by EASA, which is the Technical Agent 
for the Member States of the European Union, to correct an unsafe 
condition for certain Airbus Helicopters Model AS350B, AS350BA, 
AS350BB, AS350B1, AS350B2, AS350B3, and AS350D helicopters; Model 
AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and 
Model EC130 B4 and EC130 T2 helicopters. Model AS355BB helicopters are 
not certificated by the FAA and are not included on the U.S. type 
certificate data sheet; this AD therefore does not include those 
helicopters in the applicability. EASA advises that during a scheduled 
inspection on an Airbus Helicopters Model AS350B3 helicopter, one of 
the two retaining rings of the inner race of the MRM upper bearing was 
found missing. These two retaining rings ensure that the inner race is 
correctly positioned with respect to the rollers, and, if one or both 
of these retaining rings are missing, it can lead to an unlimited shift 
of the inner race and compromise the function of the MRM upper bearing. 
This condition, if not detected and corrected, can lead to damage to 
the MRM and surrounding elements, possibly resulting in loss of control 
of the helicopter.
    Airbus Helicopters developed an inspection to check that the upper 
and lower retaining rings of the inner race of the MRM upper bearing 
are present and correctly installed. EASA determined that the same 
condition may exist or develop on Airbus Helicopters Model AS350 
helicopters, Model AS355 helicopters, and Model EC130 helicopters 
because they share a similar design and supply chain. Until the check 
of the upper and lower bearing retaining rings is accomplished, EASA 
specifies that repetitive inspections of the MRM upper bearing sealant 
bead (sealant bead) should be accomplished to ensure the MRM remains 
serviceable. EASA considers its AD an interim measure pending further 
investigation results, and notes that further AD action may follow.

Comments

    The FAA gave the public the opportunity to participate in 
developing this final rule. The FAA received 4 comments in support of 
the NPRM.

FAA's Determination

    These 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 issuing this AD after 
evaluating all of the information provided by EASA and determining the 
unsafe condition exists and is likely to exist or develop on other 
helicopters of the same type design and that air safety and the public 
interest require adopting the AD requirements as proposed.

Differences Between This AD and the EASA AD

    Although EASA AD 2018-0206 specifies accomplishing the inspection 
of the installation of the MRM upper bearing inner race retaining rings 
within 660 hours time in service (TIS) or 24 months, whichever occurs 
first, the FAA has determined that interval does not address the 
identified unsafe condition soon enough to ensure an adequate level of 
safety for the affected fleet. In developing an appropriate compliance 
time for this AD, the FAA considered the degree of urgency associated 
with the subject unsafe condition and the manufacturer's 
recommendation. In light of all of these factors, the FAA finds that a 
compliance time of within 660 hours TIS or 6 months, whichever occurs 
first, represents an appropriate interval of time for affected 
helicopters to continue to operate without compromising safety.
    Although paragraph (5) of EASA AD 2018-0206 specifies that 
operators may contact the manufacturer for instructions if there are 
signs of degradation on the MRM inner race, paragraph (i)(3) of this AD 
requires operators to repair or replace the MRM if there is any 
degradation as indicated by damage to the retaining rings (including 
but not limited to cracks, scratches, and gouges), deterioration, or 
wear.

[[Page 13635]]

Related Service Information Under 1 CFR Part 51

    Airbus Helicopters has issued the following service information.
     Airbus Helicopters Alert Service Bulletin AS350-62.00.42, 
Revision 0, dated September 17, 2018.
     Airbus Helicopters Alert Service Bulletin AS355-62.00.37, 
Revision 0, dated September 17, 2018.
     Airbus Helicopters Alert Service Bulletin EC130-62A017, 
Revision 0, dated September 17, 2018.
    This service information describes procedures for a one-time 
inspection to verify presence and correct installation of the MRM upper 
bearing retaining rings, a repetitive inspection of the sealant bead on 
the MRM for damage, and corrective actions. Damage of the sealant bead 
includes flaws, cracks, folds, separation, or absence of the sealant 
bead. Corrective actions include repair and replacement. These 
documents are distinct since they apply to different helicopter models.
    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.

Costs of Compliance

    The FAA estimates that this AD affects 1,212 helicopters of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
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               Labor cost                   Parts cost         Cost per product         Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 30 work-hours x $85 per hour = Up               $0  Up to $2,550..............  Up to $3,090,600.
 to $2,550.
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of any 
required actions. The FAA has no way of determining the number of 
aircraft that might need these on-condition actions:

                 Estimated Costs of On-Condition Actions
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           Labor cost                 Parts cost       Cost per product
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Up to 80 work-hours x $85 per     Up to $33,124.....  Up to $39,924.
 hour = Up to $6,800.
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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 helicopters 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,
    (2) Will not affect intrastate aviation in Alaska, and
    (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.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of 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 adding the following new airworthiness 
directive.

2021-04-13 Airbus Helicopters: Amendment 39-21434; Docket No. FAA-
2020-0847; Product Identifier 2018-SW-087-AD.

(a) Effective Date

    This Airworthiness Directive (AD) becomes effective April 14, 
2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Airbus Helicopters, certificated in any 
category, as identified in paragraphs (c)(1) through (3) of this AD.
    (1) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, and AS350D 
helicopters.
    (2) Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP 
helicopters.
    (3) Model EC130 B4 and EC130 T2 helicopters.

(d) Subject

    Joint Aircraft Service Component (JASC) Code 6230, Main Rotor 
Mast Inner Race Rings.

(e) Reason

    This AD was prompted by a report of a missing retaining ring of 
the inner race of the main rotor mast (MRM) upper bearing. The FAA 
is issuing this AD to address this condition, which, if not detected 
and corrected, can lead to damage to the MRM and surrounding 
elements, possibly resulting in loss of control of the helicopter.

(f) Compliance

    You are responsible for performing each action required by this 
AD within the

[[Page 13636]]

specified compliance time unless it has already been accomplished 
prior to that time.

(g) Definitions

    (1) For the purposes of this AD, an affected part is any MRM 
having part number (P/N) 350A37-1290-XX (where XX can be any 
numerical combination) and a serial number as listed in Airbus 
Helicopters Alert Service Bulletin AS350-62.00.42, Revision 0, dated 
September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355-
62.00.37, Revision 0, dated September 17, 2018; or Airbus 
Helicopters Alert Service Bulletin EC130-62A017, Revision 0, dated 
September 17, 2018, as applicable to your model helicopter, unless 
the upper bearing inner race retaining rings are verified to be 
installed correctly as specified in the inspection required in 
paragraph (i)(1) of this AD.
    (2) For the purposes of this AD, a Group 1 helicopter is one on 
which an affected part is installed.
    (3) For the purposes of this AD, a Group 2 helicopter is one on 
which an affected part is not installed.

 (h) MRM Upper Sealant Bead Inspection

    (1) For Group 1 helicopters, within the compliance time 
specified in Figure 1 to paragraph (h) of this AD, and, thereafter, 
at intervals not to exceed 165 hours time-in-service (TIS): Inspect 
the MRM upper bearing sealant bead for damage in accordance with 
section 3.B.2.a of the Accomplishment Instructions of Airbus 
Helicopters Alert Service Bulletin AS350-62.00.42, Revision 0, dated 
September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355-
62.00.37, Revision 0, dated September 17, 2018; or Airbus 
Helicopters Alert Service Bulletin EC130-62A017, Revision 0, dated 
September 17, 2018, as applicable to your model helicopter, except 
you are not required to discard the plastic clamps (Item vv). For 
the purposes of this inspection, damage may be indicated by flaws, 
cracks, folds, separation, or absence of the sealant bead.
[GRAPHIC] [TIFF OMITTED] TR10MR21.000

    Note 1 to paragraph (h)(1): Unless specified otherwise, the 
hours TIS specified in figure 1 to paragraph (h) of this AD are 
those accumulated on the effective date of this AD by the helicopter 
since first flight.

    (2) If, during any inspection of the MRM upper bearing sealant 
bead as required by paragraph (h)(1) of this AD, there is damage, 
before further flight, inspect the installation of the MRM upper 
bearing inner race retaining rings for discrepancies in accordance 
with paragraph (i)(1) of this AD.

 (i) MRM Inner Race Retaining Rings Inspection

    (1) For Group 1 Helicopters: Within 660 hours TIS or 6 months, 
whichever occurs first after the effective date of this AD: Inspect 
the installation of the MRM upper bearing inner race retaining rings 
for discrepancies in accordance with the Accomplishment Instructions 
of section 3.B.2.b of Airbus Helicopters Alert Service Bulletin 
AS350 62.00.42, Revision 0, dated September 17, 2018; Airbus 
Helicopters Alert Service Bulletin AS355-62.00.37, Revision 0, dated 
September 17, 2018; or Airbus Helicopters Alert Service Bulletin 
EC130-62A017, Revision 0, dated September 17, 2018, as applicable to 
your model helicopter, except you are not required to discard the 
plastic clamps (Item vv). For the purposes of this inspection, 
discrepancies may be indicated by incorrect positioning or missing 
rings.
    (2) If, during the inspection required by paragraph (i)(1) of 
this AD there are any discrepancies, before further flight, remove 
the affected part, inspect the MRM inner race for degradation, and 
replace the retaining rings in accordance with the Accomplishment 
Instructions of section 3.B.2.c of Airbus Helicopters Alert Service 
Bulletin AS350 62.00.42, Revision 0, dated September 17, 2018; 
Airbus Helicopters Alert Service Bulletin AS355-62.00.37, Revision 
0, dated September 17, 2018; or Airbus Helicopters Alert Service 
Bulletin EC130-62A017, Revision 0, dated September 17, 2018, as 
applicable to you model helicopter, except you are not required to 
return parts to Airbus Helicopters. For the purposes of this 
inspection, degradation is indicated by damage to the retaining 
rings (including but not limited to cracks, scratches, and gouges), 
deterioration, or wear.
    (3) If, during the inspection of the MRM inner race, as required 
by paragraph (i)(2) of this AD, there is any degradation, before 
next flight, repair or replace the MRM.

(j) Terminating Action

    Verification on a helicopter of correct installation of the MRM 
upper bearing inner race retaining rings, as required by paragraph 
(i)(1) of this AD, or corrective action on a helicopter, as 
specified in paragraphs (h)(2), (i)(2), or (i)(3) of this AD, as 
applicable, constitute terminating action for the repetitive 
inspections required by paragraph (h)(1) of this AD for that 
helicopter.

(k) Parts Installation Prohibition

    As of the effective date of this AD, no person may install, on 
any helicopter, an affected part as identified in paragraph (g)(1) 
of this AD.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, International Validation Branch, FAA, may 
approve AMOCs for this AD. Send your proposal to: Scott Franke, 
Aviation Safety Engineer, International Validation Branch, General 
Aviation & Rotorcraft Unit, FAA, 10101 Hillwood Pkwy., Fort Worth, 
TX 76177; telephone 817-222-5110; email [email protected].
    (2) For operations conducted under a 14 CFR part 119 operating 
certificate or under 14 CFR part 91, subpart K, notify your 
principal inspector or lacking a principal inspector, the manager of 
the local flight standards district office or certificate holding 
district office, before operating any aircraft complying with this 
AD through an AMOC.

(m) Related Information

    The subject of this AD is addressed in European Aviation Safety 
Agency (now European Union Aviation Safety Agency) (EASA) AD 2018-
0206, dated September 20, 2018. This EASA AD may be found in the AD 
docket on the internet at https://www.regulations.gov by searching 
for and locating Docket No. FAA-2020-0847.

(n) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference 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.
    (i) Airbus Helicopters Alert Service Bulletin AS350-62.00.42, 
Revision 0, dated September 17, 2018.
    (ii) Airbus Helicopters Alert Service Bulletin AS355-62.00.37, 
Revision 0, dated September 17, 2018.
    (iii) Airbus Helicopters Alert Service Bulletin EC130-62A017, 
Revision 0, dated September 17, 2018.

[[Page 13637]]

    (3) For service information identified in this AD, contact 
Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; 
telephone 800-232-0323 or Fax: 972-641-3775; or at https://www.airbus.com/helicopters/services/technical-support.html.
    (4) You may view this service information at the FAA, Office of 
the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 
6N-321, Fort Worth, TX 76177. For information on the availability of 
this material at the FAA, call 817-222-5110.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on February 8, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-04806 Filed 3-9-21; 8:45 am]
BILLING CODE 4910-13-P