Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters, 28473-28476 [2021-11081]

Download as PDF 28473 Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Rules and Regulations the material must be available to the public. All approved material is available for inspection at the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies Program, Sixth Floor, 950 L’Enfant Plaza SW, Washington, DC 20024, (202) 586–2945, https://www.energy.gov/eere/buildings/ appliance-and-equipment-standardsprogram, and may be obtained from the other sources in this section. It is also available for inspection 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: www.archives.gov/federal-register/cfr/ ibr-locations.html. (b) * * * (2) ANSI/AMCA Standard 208–18, (‘‘AMCA 208–18’’), Calculation of the Fan Energy Index, ANSI approved January 24, 2018, IBR approved for appendix U to this subpart. * * * * * ■ 3. Appendix U to subpart B of part 430 is amended by: ■ a. Removing sections 1.1, 1.3, and 1.4; ■ b. Redesignating section 1.2 as 1.1; ■ c. Redesignating sections 1.5 through 1.23 as 1.2 through 1.20, respectively; ■ d. Revising section 3.5; ■ e. Revising the heading for section 4; ■ f. Removing the parenthetical ‘‘(for all tested settings for large-diameter ceiling fans)’’ in section 4.(3); ■ g. Revising section 4.(4); and ■ h. Adding section 5. The revisions and addition read as follows: Appendix U to Subpart B of Part 430— Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans jbell on DSKJLSW7X2PROD with RULES * * * * * 3.5 Active mode test measurement for large-diameter ceiling fans: (1) Test large-diameter ceiling fans in accordance with ANSI/AMCA Standard 208–18 in all phases simultaneously at: (a) High speed, and (b) 40 percent speed or the nearest speed that is not less than 40 percent speed. (2) When testing at 40 percent speed for large-diameter ceiling fans that can operate over an infinite number of speeds (e.g., ceiling fans with VFDs), ensure the average measured RPM is within the greater of 1% of the average RPM at high speed or 1 RPM. For example, if the average measured RPM at high speed is 50 RPM, for testing at 40% speed, the average measured RPM should be between 19 RPM and 21 RPM. If the average measured RPM falls outside of this tolerance, adjust the VerDate Sep<11>2014 16:44 May 26, 2021 Jkt 253001 ceiling fan speed and repeat the test. Calculate the airflow and measure the active (real) power consumption in all phases simultaneously in accordance with the test requirements specified in sections 8 and 9, AMCA 230–15 (incorporated by reference, see § 430.3), with the following modifications: * * * * * 4. Calculation of Ceiling Fan Efficiency From the Test Results for LSSD and HSSD ceiling fans: * * * * * (4) Table 3 of this appendix specifies the daily hours of operation to be used in calculating ceiling fan efficiency: TABLE 3 TO APPENDIX U TO SUBPART B OF PART 430: DAILY OPERATING HOURS FOR CALCULATING CEILING FAN EFFICIENCY No standby 3.4 3.0 0.0 17.6 3.4 3.0 17.6 0.0 Daily Operating Hours for HSSD Ceiling Fans High Speed ................. Standby Mode ............. Off Mode ..................... 12.0 0.0 12.0 12.0 12.0 0.0 * * * * * 5. Calculation of Ceiling Fan Energy Index (CFEI) From the Test Results for Large-Diameter Ceiling Fans: Calculate CFEI, which is the FEI for large-diameter ceiling fans, at the speeds specified in section 3.5 of this appendix according to ANSI/AMCA 208–18, (incorporated by reference, see § 430.3), with the following modifications: (1) Using an Airflow Constant (Q0) of 26,500 cubic feet per minute; (2) Using a Pressure Constant (P0) of 0.0027 inches water gauge; and (3) Using a Fan Efficiency Constant (h0) of 42 percent. ■ 4. Section 430.32 is amended by: ■ a. Revising paragraph (s)(2)(i); ■ b. Redesignating (s)(2)(ii) as (s)(2)(iii); and ■ c. Adding new paragraph (s)(2)(ii). The revision and addition read as follows: § 430.32 Energy and water conservation standards and their compliance dates. * * * * * (s) * * * (2)(i) Ceiling fans manufactured on or after January 21, 2020, shall meet the requirements shows in the table: PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 Minimum efficiency (CFM/W) 1 Very small-diameter (VSD) ............ D ≤ 12 in.: 21. D > 12 in.: 3.16 D–17.04. 0.65 D + 38.03. 0.29 D + 34.46. 4.16 D + 0.02. Standard ........................................ Hugger ........................................... High-speed small-diameter (HSSD). 1 D is the ceiling fan’s blade span, in inches, as determined in Appendix U of this part. (ii) Large-diameter ceiling fans manufactured on or after January 21, 2020, shall have a CFEI greater than or equal to— (A) 1.00 at high speed; and (B) 1.31 at 40 percent speed or the nearest speed that is not less than 40 percent speed. * * * * * [FR Doc. 2021–10882 Filed 5–26–21; 8:45 am] BILLING CODE 6450–01–P With standby Daily Operating Hours for LSSD Ceiling Fans High Speed ................. Low Speed .................. Standby Mode ............. Off Mode ..................... Product class as defined in Appendix U DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–26107; Project Identifier 2004–SW–30–AD; Amendment 39– 21549; AD 2021–10–16] RIN 2120–AA64 Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for all Carson Helicopters, Inc., Model S–61L and SH–3H helicopters; Croman Corporation Model SH–3H helicopters; Sikorsky Aircraft Corporation Model S–61A, S–61D, S–61E, and S–61V helicopters; and Siller Helicopters Model CH–3E and SH–3A helicopters. This AD was prompted by an accident. This AD requires tracking hours time-inservice (TIS) and external lift cycles (lift cycles) for certain main gearbox left and right input freewheel unit (IFWU) assemblies. This AD also requires determining the type of IFWU assembly installed and depending on the results, calculating the moving average, repetitive inspections, recording certain information, replacing parts, and marking parts. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective July 1, 2021. SUMMARY: E:\FR\FM\27MYR1.SGM 27MYR1 28474 Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Rules and Regulations The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of July 1, 2021. ADDRESSES: For service information identified in this final rule, contact your local Sikorsky Field Representative or Sikorsky’s Service Engineering Group at Sikorsky Aircraft Corporation, 124 Quarry Road, Trumbull, CT 06611; telephone 1–800-Winged-S; email wcs_ cust_service_eng.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at https:// www.sikorsky360.com. 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. It is also available at https://www.regulations.gov by searching for and locating Docket No. FAA–2006–26107. jbell on DSKJLSW7X2PROD with RULES Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2006–26107; 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 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: Isabel Saltzman, Aviation Safety Engineer, Boston ACO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; telephone 781–238–7649; email Isabel.L.Saltzman@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Sikorsky Aircraft Corporation Model S–61 A, D, E, and V helicopters; Croman Corporation Model SH–3H helicopters, Carson Helicopters, Inc. Model S–61L helicopters; and Siller Helicopters Model CH–3E and SH–3A helicopters. The NPRM published in the Federal Register on October 30, 2006 (71 FR 63272). The NPRM was prompted by an accident in which the left and right IFWU assembly on a helicopter slipped or disengaged resulting in both engines overspeeding, VerDate Sep<11>2014 16:14 May 26, 2021 Jkt 253001 engine shutdowns, and loss of engine power to the transmissions. In the NPRM, the FAA proposed to require creating a component history card or equivalent record and recording the hours TIS and the lift cycles for each affected main gearbox left and right IFWU assembly. The NPRM also proposed to require determining if the IFWU assembly is a repetitive external lift (REL) or non-REL IFWU assembly. The determination includes calculating a moving average of lift cycles per hour TIS at specified intervals on each IFWU assembly. For REL IFWU assemblies, the NPRM proposed to require repetitive inspections, which include visual and dimensional inspections, of the IFWU assembly for wear, surface distress, and endplay, recording certain information, and replacing affected parts with an airworthy part. In addition, the NPRM proposed to require permanently marking the REL IFWU camshafts and gear housings with the letters ‘‘REL’’ on the surface of these parts. The FAA issued a supplemental notice of proposed rulemaking (SNPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Carson Helicopters, Inc., Model S–61L and SH–3H helicopters; Croman Corporation Model SH–3H helicopters; Sikorsky Aircraft Corporation Model S–61A, S–61D, S–61E, and S–61V helicopters; and Siller Helicopters Model CH–3E and SH–3A helicopters. The SNPRM published in the Federal Register on March 15, 2021 (86 FR 14285). The SNPRM was prompted by a determination that additional camshaft and gear housing part numbers need to be marked and the applicability and certain compliance times need clarification. The SNPRM proposed to require the same actions specified in the NPRM. The SNPRM also proposed to mark additional camshaft and gear housing part numbers. Additionally, the SNPRM clarified the applicability and certain compliance times. The FAA is issuing this AD to address the unsafe condition on these products. Discussion of Final Airworthiness Directive Comments The FAA received comments from one commenter. The commenter was Croman Corp. The commenter supported the SNPRM without change. Conclusion The FAA reviewed the relevant data, considered the comments received, and determined that air safety requires adopting the AD as proposed. PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. Except for minor editorial changes, this AD is adopted as proposed in the SNPRM. Related Service Information Under 1 CFR Part 51 The FAA reviewed Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003. This service information specifies, among other actions, procedures for inspections, which includes visual and dimensional inspections, of the IFWU assembly for wear, surface distress, and endplay, and for recording certain information. 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. Other Related Service Information The FAA also reviewed Sikorsky Aircraft Corporation All Operators Letter (AOL) CCS–61–AOL–04–0005, dated May 18, 2004. This service information provides an example and additional information about tracking cycles and the moving average procedure. The FAA also reviewed Sikorsky Aircraft S–61L/N Overhaul Manual, SA4045–83, Revision 20, dated August 15, 2003, as revised by Temporary Revisions 65–193, –194, –195, and –196, which contains the overhaul procedures for the IFWU assembly. Differences Between This AD and the Service Information The effectivity of Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003, includes Model S–61 L, N, NM, and R helicopters. However, for those helicopters, the unsafe condition is addressed in AD 2007–01–05, Amendment 39–14876 (72 FR 1139, January 10, 2007). Therefore, those helicopters are not included in the applicability of this AD. Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003, specifies contacting Sikorsky and providing information to Sikorsky. This AD does not require you to contact Sikorsky or provide information to Sikorsky. Costs of Compliance The FAA estimates that this AD affects 55 helicopters of U.S. registry. The FAA estimates the following costs to comply with this AD: E:\FR\FM\27MYR1.SGM 27MYR1 Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Rules and Regulations 28475 ESTIMATED COSTS Action Labor cost Parts cost Cost per product Cost on U.S. operators Creating history card; determining type of IFWU assembly; inspecting IFWU assemblies; recording information; replacing parts; and marking certain parts. Up to 8 work-hours × $85 per hour = $680. Up to $1,975 .. Up to $2,655 .. Up to $146,025. 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, (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. 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: ■ 2021–10–16 Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters: Amendment 39–21549; Docket No. FAA–2006–26107; Project Identifier 2004–SW–30–AD. (a) Effective Date This airworthiness directive (AD) is effective July 1, 2021. (b) Affected ADs None. (c) Applicability This AD applies to all helicopters identified in paragraphs (c)(1) through (6) of this AD, certificated in any category including restricted. (1) Carson Helicopters, Inc., Model S–61L helicopters. (2) Carson Helicopters, Inc., Model SH–3H helicopters. (3) Croman Corporation Model SH–3H helicopters. (4) Sikorsky Aircraft Corporation Model S–61A, S–61D, S–61E, and S–61V helicopters. (5) Siller Helicopters Model CH–3E helicopters. (6) Siller Helicopters Model SH–3A helicopters. (d) Subject Joint Aircraft System Component (JASC) Code 6310, Engine/Transmission Coupling. The Amendment (e) Unsafe Condition This AD was prompted by an accident in which the left and right input freewheel unit (IFWU) assembly on a helicopter slipped or disengaged, resulting in both engines overspeeding, engine shutdowns, and loss of engine power to the transmissions. The FAA is issuing this AD to address slipping of the main gearbox IFWU assembly, loss of engine power, and subsequent loss of control of the helicopter. Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: (f) Compliance Comply with this AD within the compliance times specified, unless already done. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. jbell on DSKJLSW7X2PROD with RULES PART 39—AIRWORTHINESS DIRECTIVES VerDate Sep<11>2014 16:14 May 26, 2021 Jkt 253001 PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 (g) Creation of History Card or Equivalent and Daily Actions Within 10 hours time-in-service (TIS) after the effective date of this AD, do the actions specified in paragraphs (g)(1) and (2) of this AD. (1) Create an external lift component history card or equivalent record for each IFWU assembly, part number (P/N) 61074– 35000–041 through 61074–35000–063 inclusive. (2) Count and, at the end of each day’s operations, record the number of external lift cycles (lift cycles) performed and the hours TIS for each IFWU assembly, P/N 61074– 35000–041 through 61074–35000–063 inclusive. A ‘‘lift cycle’’ is defined as the lifting of an external load and subsequent release of the load. Record the lift cycles and hours TIS on the external lift component history card or equivalent record. (h) Determination of IFWU Assembly Type and Calculations (1) Upon reaching 250 hours TIS after the effective date of this AD on each IFWU assembly, P/N 61074–35000–041 through 61074–35000–063 inclusive, determine whether the IFWU assembly is a repetitive external lift (REL) or non-REL IFWU assembly by using a 250-hour TIS moving average. To perform the calculation, divide the total number of lift cycles performed during the first 250 hours TIS by 250. The result will be the first moving average calculation of lift cycles per hour TIS. (i) If the calculation specified in paragraph (h)(1) of this AD results in more than 6 lift cycles per hour TIS, the IFWU assembly is an REL IFWU assembly. (ii) If the calculation specified in paragraph (h)(1) of this AD results in 6 or less lift cycles per hour TIS, the IFWU assembly is a NonREL IFWU assembly. (2) For each IFWU assembly determined to be a Non-REL IFWU assembly based on the first calculation of the 250-hour TIS moving average for lift cycles specified in paragraph (h)(1) of this AD: Within 50 hours TIS after the determination, and thereafter at intervals of 50 hours TIS, recalculate the average lift cycles per hour TIS to determine whether the IFWU assembly is an REL or non-REL IFWU assembly. To perform the calculation, subtract the total number of lift cycles performed during the first 50-hour TIS interval used in the previous moving average calculation from the total number of lift cycles performed on the IFWU assembly during the previous 300 hours TIS. Divide this result by 250. The result will be the next or subsequent moving average calculation of lift cycles per hour TIS. (i) If any calculation specified in paragraph (h)(2) of this AD results in more than 6 lift E:\FR\FM\27MYR1.SGM 27MYR1 28476 Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Rules and Regulations cycles per hour TIS, the IFWU assembly is an REL IFWU assembly. (ii) If any calculation specified in paragraph (h)(2) of this AD results in 6 or less lift cycles per hour TIS, the IFWU assembly is a Non-REL IFWU assembly. Note 1 to paragraph (h)(2): Sikorsky Aircraft Corporation All Operators Letter (AOL) CCS–61–AOL–04–0005, dated May 18, 2004, provides an example and additional information about tracking cycles and the moving average procedure. jbell on DSKJLSW7X2PROD with RULES Note 2 to paragraph (h)(2): The following is a sample calculation for subsequent 50 hour TIS intervals. Assume the total number of lift cycles for the first 50 hour TIS interval used in the previous moving average calculation = 450 lift cycles and the total number of lift cycles for the previous 300 hours TIS = 2,700 lift cycles. The subsequent moving average of lift cycles per hour TIS = (2,700¥450) divided by 250 = 9 lift cycles per hour TIS. (3) Once an IFWU assembly is determined to be an REL IFWU assembly, it remains an REL IFWU assembly for the rest of its service life and is subject to the inspection for REL IFWU assemblies required by paragraph (i) of this AD. (4) Once an IFWU assembly is determined to be an REL IFWU assembly, you no longer need to perform the 250-hour TIS moving average calculation required by paragraph (h)(2) of this AD, but you must continue to count and record the lift cycles as required by paragraph (g)(2) of this AD. (i) Repetitive Inspections of REL IFWU Assemblies and Replacement For each REL IFWU assembly, as determined by paragraph (h)(1) or (2) of this AD: (1) Within 500 hours TIS or 7,500 lift cycles, whichever occurs first since the assembly was determined to be a REL IFWU assembly, and thereafter at intervals not to exceed 500 hours TIS or 7,500 lift cycles, whichever occurs first, inspect for wear, surface distress, and endplay by following paragraphs B.(1) through B.(6) of the Accomplishment Instructions of Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003. Record all the information specified in Figures 1 through 3 of the Sikorsky Aircraft Corporation Alert Service Bulletin 61B35– 67B, Revision B, dated August 11, 2003. You may record this information on any suitable maintenance record, or you may use the Sikorsky evaluation forms provided in Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003. This AD does not require you to contact Sikorsky or provide information to Sikorsky. (2) If during any inspection required by paragraph (i)(1) of this AD, any IFWU assembly part is found whose average wear, wear marks, surface distress, or endplay exceeds the limits specified in paragraphs B.(1) through B.(6) of the Accomplishment Instructions of Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003, before further flight, replace the affected part with an airworthy IFWU assembly part. VerDate Sep<11>2014 16:14 May 26, 2021 Jkt 253001 Note 3 to paragraph (i)(2): Sikorsky Aircraft S–61L/N Overhaul Manual, SA4045– 83, Revision 20, dated August 15, 2003, as revised by Temporary Revisions 65–193, –194, –195, and –196, contains the overhaul procedures for the IFWU assembly. (j) Part Marking For each REL IFWU assembly, as determined by paragraph (h)(1) or (2) of this AD: Before further flight after the assembly was determined to be an REL IFWU assembly, permanently mark IFWU camshafts, P/N 61350–24052, 61350–24072, S6135–20611, S6135–20614 and S6137– 23075, and IFWU gear housings, P/N 61350– 24051, 61350–24068, S6135–20695, and S6137–23057, with the letters ‘‘REL’’. Mark the camshafts by applying etching ink on the surface of the part that is 0.5-inch square with the depth of the letters not to exceed 0.001 inch. Before further flight and after etching, neutralize the etched surface and oil to prevent corrosion. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, International Validation 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 International Validation Branch, send it to the attention of the person identified in paragraph (l)(1) of this AD. Information may be emailed to: 9-AVS-AIR730-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. (l) Related Information (1) For more information about this AD, contact Isabel Saltzman, Aviation Safety Engineer, Boston ACO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; telephone 781–238–7649; email Isabel.L.Saltzman@faa.gov. (2) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (m)(3) and (4) of this AD. (m) 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. (i) Sikorsky Aircraft Corporation Alert Service Bulletin 61B35–67B, Revision B, dated August 11, 2003. (ii) [Reserved] (3) For service information identified in this AD, contact your local Sikorsky Field Representative or Sikorsky’s Service Engineering Group at Sikorsky Aircraft Corporation, 124 Quarry Road, Trumbull, CT PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 06611; telephone 1–800-Winged-S; email wcs_cust_service_eng.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at https://www.sikorsky360.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 May 4, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–11081 Filed 5–26–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–1171; Product Identifier 2017–SW–124–AD; Amendment 39–21548; AD 2021–10–15] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB–BK 117 C–2 and Model MBB–BK 117 D–2 helicopters. This AD was prompted by a determination that a life limit for the adapter forward (FWD) of the outboard load system, repetitive inspections of other components of that system, and for certain helicopters, a modification of the outboard load system, are necessary to address the unsafe condition. This AD requires a modification of the outboard load system for certain helicopters, repetitive inspections of the outboard load system and its components for any defect (including cracking, damage, corrosion, and incorrect installation) and applicable corrective actions, and implementation of a new life limit for the FWD adapter, as specified in a European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, which is SUMMARY: E:\FR\FM\27MYR1.SGM 27MYR1

Agencies

[Federal Register Volume 86, Number 101 (Thursday, May 27, 2021)]
[Rules and Regulations]
[Pages 28473-28476]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-11081]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-26107; Project Identifier 2004-SW-30-AD; Amendment 
39-21549; AD 2021-10-16]
RIN 2120-AA64


Airworthiness Directives; Carson Helicopters, Inc.; Croman 
Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Carson Helicopters, Inc., Model S-61L and SH-3H helicopters; Croman 
Corporation Model SH-3H helicopters; Sikorsky Aircraft Corporation 
Model S-61A, S-61D, S-61E, and S-61V helicopters; and Siller 
Helicopters Model CH-3E and SH-3A helicopters. This AD was prompted by 
an accident. This AD requires tracking hours time-in-service (TIS) and 
external lift cycles (lift cycles) for certain main gearbox left and 
right input freewheel unit (IFWU) assemblies. This AD also requires 
determining the type of IFWU assembly installed and depending on the 
results, calculating the moving average, repetitive inspections, 
recording certain information, replacing parts, and marking parts. The 
FAA is issuing this AD to address the unsafe condition on these 
products.

DATES: This AD is effective July 1, 2021.

[[Page 28474]]

    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of July 1, 
2021.

ADDRESSES: For service information identified in this final rule, 
contact your local Sikorsky Field Representative or Sikorsky's Service 
Engineering Group at Sikorsky Aircraft Corporation, 124 Quarry Road, 
Trumbull, CT 06611; telephone 1-800-Winged-S; email 
[email protected]. Operators may also log on to the 
Sikorsky 360 website at https://www.sikorsky360.com. 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. It is also available at https://www.regulations.gov by searching for and locating Docket No. FAA-2006-
26107.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2006-26107; 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 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: Isabel Saltzman, Aviation Safety 
Engineer, Boston ACO Branch, FAA, 1200 District Avenue, Burlington, MA 
01803; telephone 781-238-7649; email [email protected].

SUPPLEMENTARY INFORMATION:

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to all Sikorsky Aircraft 
Corporation Model S-61 A, D, E, and V helicopters; Croman Corporation 
Model SH-3H helicopters, Carson Helicopters, Inc. Model S-61L 
helicopters; and Siller Helicopters Model CH-3E and SH-3A helicopters. 
The NPRM published in the Federal Register on October 30, 2006 (71 FR 
63272). The NPRM was prompted by an accident in which the left and 
right IFWU assembly on a helicopter slipped or disengaged resulting in 
both engines overspeeding, engine shutdowns, and loss of engine power 
to the transmissions. In the NPRM, the FAA proposed to require creating 
a component history card or equivalent record and recording the hours 
TIS and the lift cycles for each affected main gearbox left and right 
IFWU assembly. The NPRM also proposed to require determining if the 
IFWU assembly is a repetitive external lift (REL) or non-REL IFWU 
assembly. The determination includes calculating a moving average of 
lift cycles per hour TIS at specified intervals on each IFWU assembly. 
For REL IFWU assemblies, the NPRM proposed to require repetitive 
inspections, which include visual and dimensional inspections, of the 
IFWU assembly for wear, surface distress, and endplay, recording 
certain information, and replacing affected parts with an airworthy 
part. In addition, the NPRM proposed to require permanently marking the 
REL IFWU camshafts and gear housings with the letters ``REL'' on the 
surface of these parts.
    The FAA issued a supplemental notice of proposed rulemaking (SNPRM) 
to amend 14 CFR part 39 by adding an AD that would apply to all Carson 
Helicopters, Inc., Model S-61L and SH-3H helicopters; Croman 
Corporation Model SH-3H helicopters; Sikorsky Aircraft Corporation 
Model S-61A, S-61D, S-61E, and S-61V helicopters; and Siller 
Helicopters Model CH-3E and SH-3A helicopters. The SNPRM published in 
the Federal Register on March 15, 2021 (86 FR 14285). The SNPRM was 
prompted by a determination that additional camshaft and gear housing 
part numbers need to be marked and the applicability and certain 
compliance times need clarification. The SNPRM proposed to require the 
same actions specified in the NPRM. The SNPRM also proposed to mark 
additional camshaft and gear housing part numbers. Additionally, the 
SNPRM clarified the applicability and certain compliance times. The FAA 
is issuing this AD to address the unsafe condition on these products.

Discussion of Final Airworthiness Directive

Comments

    The FAA received comments from one commenter. The commenter was 
Croman Corp. The commenter supported the SNPRM without change.

Conclusion

    The FAA reviewed the relevant data, considered the comments 
received, and determined that air safety requires adopting the AD as 
proposed. Accordingly, the FAA is issuing this AD to address the unsafe 
condition on these products. Except for minor editorial changes, this 
AD is adopted as proposed in the SNPRM.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Sikorsky Aircraft Corporation Alert Service 
Bulletin 61B35-67B, Revision B, dated August 11, 2003. This service 
information specifies, among other actions, procedures for inspections, 
which includes visual and dimensional inspections, of the IFWU assembly 
for wear, surface distress, and endplay, and for recording certain 
information. 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.

Other Related Service Information

    The FAA also reviewed Sikorsky Aircraft Corporation All Operators 
Letter (AOL) CCS-61-AOL-04-0005, dated May 18, 2004. This service 
information provides an example and additional information about 
tracking cycles and the moving average procedure.
    The FAA also reviewed Sikorsky Aircraft S-61L/N Overhaul Manual, 
SA4045-83, Revision 20, dated August 15, 2003, as revised by Temporary 
Revisions 65-193, -194, -195, and -196, which contains the overhaul 
procedures for the IFWU assembly.

Differences Between This AD and the Service Information

    The effectivity of Sikorsky Aircraft Corporation Alert Service 
Bulletin 61B35-67B, Revision B, dated August 11, 2003, includes Model 
S-61 L, N, NM, and R helicopters. However, for those helicopters, the 
unsafe condition is addressed in AD 2007-01-05, Amendment 39-14876 (72 
FR 1139, January 10, 2007). Therefore, those helicopters are not 
included in the applicability of this AD.
    Sikorsky Aircraft Corporation Alert Service Bulletin 61B35-67B, 
Revision B, dated August 11, 2003, specifies contacting Sikorsky and 
providing information to Sikorsky. This AD does not require you to 
contact Sikorsky or provide information to Sikorsky.

Costs of Compliance

    The FAA estimates that this AD affects 55 helicopters of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

[[Page 28475]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                Cost on U.S.
            Action                 Labor cost          Parts cost       Cost per  product         operators
----------------------------------------------------------------------------------------------------------------
Creating history card;          Up to 8 work-     Up to $1,975.......  Up to $2,655.......  Up to $146,025.
 determining type of IFWU        hours x $85 per
 assembly; inspecting IFWU       hour = $680.
 assemblies; recording
 information; replacing parts;
 and marking certain parts.
----------------------------------------------------------------------------------------------------------------

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,
    (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.

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:

2021-10-16 Carson Helicopters, Inc.; Croman Corporation; Sikorsky 
Aircraft Corporation; and Siller Helicopters: Amendment 39-21549; 
Docket No. FAA-2006-26107; Project Identifier 2004-SW-30-AD.

(a) Effective Date

    This airworthiness directive (AD) is effective July 1, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all helicopters identified in paragraphs 
(c)(1) through (6) of this AD, certificated in any category 
including restricted.
    (1) Carson Helicopters, Inc., Model S-61L helicopters.
    (2) Carson Helicopters, Inc., Model SH-3H helicopters.
    (3) Croman Corporation Model SH-3H helicopters.
    (4) Sikorsky Aircraft Corporation Model S-61A, S-61D, S-61E, and 
S-61V helicopters.
    (5) Siller Helicopters Model CH-3E helicopters.
    (6) Siller Helicopters Model SH-3A helicopters.

(d) Subject

    Joint Aircraft System Component (JASC) Code 6310, Engine/
Transmission Coupling.

(e) Unsafe Condition

    This AD was prompted by an accident in which the left and right 
input freewheel unit (IFWU) assembly on a helicopter slipped or 
disengaged, resulting in both engines overspeeding, engine 
shutdowns, and loss of engine power to the transmissions. The FAA is 
issuing this AD to address slipping of the main gearbox IFWU 
assembly, loss of engine power, and subsequent loss of control of 
the helicopter.

(f) Compliance

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

(g) Creation of History Card or Equivalent and Daily Actions

    Within 10 hours time-in-service (TIS) after the effective date 
of this AD, do the actions specified in paragraphs (g)(1) and (2) of 
this AD.
    (1) Create an external lift component history card or equivalent 
record for each IFWU assembly, part number (P/N) 61074-35000-041 
through 61074-35000-063 inclusive.
    (2) Count and, at the end of each day's operations, record the 
number of external lift cycles (lift cycles) performed and the hours 
TIS for each IFWU assembly, P/N 61074-35000-041 through 61074-35000-
063 inclusive. A ``lift cycle'' is defined as the lifting of an 
external load and subsequent release of the load. Record the lift 
cycles and hours TIS on the external lift component history card or 
equivalent record.

(h) Determination of IFWU Assembly Type and Calculations

    (1) Upon reaching 250 hours TIS after the effective date of this 
AD on each IFWU assembly, P/N 61074-35000-041 through 61074-35000-
063 inclusive, determine whether the IFWU assembly is a repetitive 
external lift (REL) or non-REL IFWU assembly by using a 250-hour TIS 
moving average. To perform the calculation, divide the total number 
of lift cycles performed during the first 250 hours TIS by 250. The 
result will be the first moving average calculation of lift cycles 
per hour TIS.
    (i) If the calculation specified in paragraph (h)(1) of this AD 
results in more than 6 lift cycles per hour TIS, the IFWU assembly 
is an REL IFWU assembly.
    (ii) If the calculation specified in paragraph (h)(1) of this AD 
results in 6 or less lift cycles per hour TIS, the IFWU assembly is 
a Non-REL IFWU assembly.
    (2) For each IFWU assembly determined to be a Non-REL IFWU 
assembly based on the first calculation of the 250-hour TIS moving 
average for lift cycles specified in paragraph (h)(1) of this AD: 
Within 50 hours TIS after the determination, and thereafter at 
intervals of 50 hours TIS, recalculate the average lift cycles per 
hour TIS to determine whether the IFWU assembly is an REL or non-REL 
IFWU assembly. To perform the calculation, subtract the total number 
of lift cycles performed during the first 50-hour TIS interval used 
in the previous moving average calculation from the total number of 
lift cycles performed on the IFWU assembly during the previous 300 
hours TIS. Divide this result by 250. The result will be the next or 
subsequent moving average calculation of lift cycles per hour TIS.
    (i) If any calculation specified in paragraph (h)(2) of this AD 
results in more than 6 lift

[[Page 28476]]

cycles per hour TIS, the IFWU assembly is an REL IFWU assembly.
    (ii) If any calculation specified in paragraph (h)(2) of this AD 
results in 6 or less lift cycles per hour TIS, the IFWU assembly is 
a Non-REL IFWU assembly.

    Note 1 to paragraph (h)(2): Sikorsky Aircraft Corporation All 
Operators Letter (AOL) CCS-61-AOL-04-0005, dated May 18, 2004, 
provides an example and additional information about tracking cycles 
and the moving average procedure.


    Note 2 to paragraph (h)(2): The following is a sample 
calculation for subsequent 50 hour TIS intervals. Assume the total 
number of lift cycles for the first 50 hour TIS interval used in the 
previous moving average calculation = 450 lift cycles and the total 
number of lift cycles for the previous 300 hours TIS = 2,700 lift 
cycles. The subsequent moving average of lift cycles per hour TIS = 
(2,700-450) divided by 250 = 9 lift cycles per hour TIS.

    (3) Once an IFWU assembly is determined to be an REL IFWU 
assembly, it remains an REL IFWU assembly for the rest of its 
service life and is subject to the inspection for REL IFWU 
assemblies required by paragraph (i) of this AD.
    (4) Once an IFWU assembly is determined to be an REL IFWU 
assembly, you no longer need to perform the 250-hour TIS moving 
average calculation required by paragraph (h)(2) of this AD, but you 
must continue to count and record the lift cycles as required by 
paragraph (g)(2) of this AD.

(i) Repetitive Inspections of REL IFWU Assemblies and Replacement

    For each REL IFWU assembly, as determined by paragraph (h)(1) or 
(2) of this AD:
    (1) Within 500 hours TIS or 7,500 lift cycles, whichever occurs 
first since the assembly was determined to be a REL IFWU assembly, 
and thereafter at intervals not to exceed 500 hours TIS or 7,500 
lift cycles, whichever occurs first, inspect for wear, surface 
distress, and endplay by following paragraphs B.(1) through B.(6) of 
the Accomplishment Instructions of Sikorsky Aircraft Corporation 
Alert Service Bulletin 61B35-67B, Revision B, dated August 11, 2003. 
Record all the information specified in Figures 1 through 3 of the 
Sikorsky Aircraft Corporation Alert Service Bulletin 61B35-67B, 
Revision B, dated August 11, 2003. You may record this information 
on any suitable maintenance record, or you may use the Sikorsky 
evaluation forms provided in Sikorsky Aircraft Corporation Alert 
Service Bulletin 61B35-67B, Revision B, dated August 11, 2003. This 
AD does not require you to contact Sikorsky or provide information 
to Sikorsky.
    (2) If during any inspection required by paragraph (i)(1) of 
this AD, any IFWU assembly part is found whose average wear, wear 
marks, surface distress, or endplay exceeds the limits specified in 
paragraphs B.(1) through B.(6) of the Accomplishment Instructions of 
Sikorsky Aircraft Corporation Alert Service Bulletin 61B35-67B, 
Revision B, dated August 11, 2003, before further flight, replace 
the affected part with an airworthy IFWU assembly part.

    Note 3 to paragraph (i)(2): Sikorsky Aircraft S-61L/N Overhaul 
Manual, SA4045-83, Revision 20, dated August 15, 2003, as revised by 
Temporary Revisions 65-193, -194, -195, and -196, contains the 
overhaul procedures for the IFWU assembly.

(j) Part Marking

    For each REL IFWU assembly, as determined by paragraph (h)(1) or 
(2) of this AD: Before further flight after the assembly was 
determined to be an REL IFWU assembly, permanently mark IFWU 
camshafts, P/N 61350-24052, 61350-24072, S6135-20611, S6135-20614 
and S6137-23075, and IFWU gear housings, P/N 61350-24051, 61350-
24068, S6135-20695, and S6137-23057, with the letters ``REL''. Mark 
the camshafts by applying etching ink on the surface of the part 
that is 0.5-inch square with the depth of the letters not to exceed 
0.001 inch. Before further flight and after etching, neutralize the 
etched surface and oil to prevent corrosion.

(k) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, International Validation 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 International Validation Branch, send 
it to the attention of the person identified in paragraph (l)(1) of 
this AD. Information may be emailed 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.

(l) Related Information

    (1) For more information about this AD, contact Isabel Saltzman, 
Aviation Safety Engineer, Boston ACO Branch, FAA, 1200 District 
Avenue, Burlington, MA 01803; telephone 781-238-7649; email 
[email protected].
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (m)(3) and (4) of this AD.

(m) 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.
    (i) Sikorsky Aircraft Corporation Alert Service Bulletin 61B35-
67B, Revision B, dated August 11, 2003.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact your 
local Sikorsky Field Representative or Sikorsky's Service 
Engineering Group at Sikorsky Aircraft Corporation, 124 Quarry Road, 
Trumbull, CT 06611; telephone 1-800-Winged-S; email 
[email protected]. Operators may also log on to 
the Sikorsky 360 website at https://www.sikorsky360.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: [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on May 4, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-11081 Filed 5-26-21; 8:45 am]
BILLING CODE 4910-13-P
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