Airworthiness Directives; Airbus Helicopters, 69488-69492 [2020-24260]

Download as PDF Federal Register / Vol. 85, No. 213 / Tuesday, November 3, 2020 / Rules and Regulations (3) For Bell Model 412CF helicopters, revise Section 2, Normal Procedures, under both ‘‘BEFORE TAKEOFF’’ and ‘‘IN–FLIGHT OPERATIONS’’ of the existing RFM for your helicopter by adding the information in Figure 1 to paragraph (g)(1) of this AD. Using a different document with information identical to that contained in Figure 1 to paragraph (g)(1) of this AD is acceptable for compliance with the requirements of this paragraph. (4) The actions required by paragraphs (g)(1) through (3) of this AD may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a)(1) through (4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, DSCO 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 (i) of this AD. Information may be emailed to: 9-ASW-190COS@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. khammond on DSKJM1Z7X2PROD with RULES (i) Related Information For more information about this AD, contact Kuethe Harmon, Safety Management Program Manager, DSCO Branch, Compliance & Airworthiness Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5198; email kuethe.harmon@faa.gov. (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this VerDate Sep<11>2014 15:54 Nov 02, 2020 Jkt 253001 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) Section 2, Normal Procedures, of Bell 412 BHT–412–FM–1 Rotorcraft Flight Manual (RFM), Revision 26, dated August 19, 2020. (ii) Section 2, Normal Procedures, of Bell 412 BHT–412–FM–2 RFM, Revision 13, dated August 19, 2020. (iii) Section 2, Normal Procedures, of Bell 412 BHT–412–FM–3 RFM, Revision 20, dated August 19, 2020. (iv) Section 2, Normal Procedures, of Bell 412EP BHT–412–FM–4 RFM, Revision 37, dated August 19, 2020. (v) Section 2, Normal Procedures, of Bell 412EPI BHT–412–FM–5 RFM, Revision 9, dated August 19, 2020. (vi) Section 2, Normal Procedures, of Subaru Bell 412EPX BHT–412–FM–6 RFM, Revision 5, dated August 19, 2020. (3) For service information identified in this AD, contact Bell Textron, Inc., P.O. Box 482, Fort Worth, TX 76101; telephone 817– 280–3391; fax 817–280–6466; or at https:// www.bellcustomer.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/ibrlocations.html. Issued on October 15, 2020. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–24258 Filed 11–2–20; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00024 Fmt 4700 Sfmt 4700 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0462; Product Identifier 2019–SW–021–AD; Amendment 39–21309; AD 2020–22–13] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS332C1 and AS332L1 helicopters. This AD was prompted by a report that the affected helicopters use the same ‘‘flight/ ground’’ logic signal, instead of independent redundant signals. This AD requires amending the emergency procedures of the existing rotorcraft flight manual (RFM) for your helicopter, a wiring modification of the ‘‘flight/ ground’’ logic signal source of the attitude and heading reference system (AHRS) 1, and then removal of the amendment to the existing RFM for your helicopter. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective December 8, 2020. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 8, 2020. ADDRESSES: For service information identified in this final rule, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; phone: (972) 641–0000 or (800) 232–0323; fax: (972) 641–3775; or at https:// SUMMARY: E:\FR\FM\03NOR1.SGM 03NOR1 ER03NO20.034</GPH> 69488 Federal Register / Vol. 85, No. 213 / Tuesday, November 3, 2020 / Rules and Regulations www.airbus.com/helicopters/services/ hnical-support.html. 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. 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– 0462; 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, the European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, any comments received, and other information. The street address for Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT: George Schwab, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; phone: 817–222–5110; email: george.schwab@faa.gov. SUPPLEMENTARY INFORMATION: khammond on DSKJM1Z7X2PROD with RULES Discussion The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain Airbus Helicopters Model AS332C1 and AS332L1 helicopters. The NPRM published in the Federal Register on June 4, 2020 (85 FR 34375). The NPRM was prompted by a report that the affected helicopters use the same ‘‘flight/ground’’ logic signal instead of independent redundant signals. The NPRM proposed to require amending the emergency procedures of the existing RFM for your helicopter, a wiring modification of the ‘‘flight/ ground’’ logic signal source of the AHRS 1, and then removal of the amendment to the existing RFM for your helicopter. The FAA is issuing this AD to address certain helicopters that use the same ‘‘flight/ground’’ logic signal, instead of independent redundant signals. If both AHRS incorrectly receive ‘‘ground’’ status in flight, as a result for instance of a single failure, this will generate consistent erroneous computation of the attitudes and vertical speed during helicopter maneuvers with consequent incorrect flight data indications to the flight crew on both primary displays. Erroneous flight information could lead to increased workload for the flight crew when the upper modes of the automatic VerDate Sep<11>2014 15:54 Nov 02, 2020 Jkt 253001 flight control system are not engaged, possibly resulting in reduced control of the helicopter during high speed maneuvers in instrumental meteorological conditions (IMC). EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2019–0021, dated February 1, 2019; corrected February 4, 2019 (EASA AD 2019–0021) (referred to after this as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for certain Airbus Helicopters Model AS332C1 and AS332L1 helicopters. EASA advises that the AHRS 1 and AHRS 2 installed on AS332C1e and AS332L1e helicopters use the same ‘‘flight/ground’’ logic signal, instead of independent redundant signals, as required by the original design specification. If both AHRS incorrectly receive ‘‘ground’’ status in flight, as a result for instance of a single failure, this will generate consistent erroneous computation of the attitudes and vertical speed during helicopter maneuvers with consequent incorrect flight data indications to the flight crew on both primary displays. EASA AD 2019–0021 states that this condition, if not corrected, could lead to increased workload for the flight crew when the upper modes of the automatic flight control system are not engaged, possibly resulting in reduced control of the helicopter during high speed maneuvers in IMC. EASA further advises that Airbus Helicopters has issued rush revisions to the RFM, and developed a modification of the wiring harness, ensuring independent sources of the ‘‘flight/ ground’’ logic signal for both AHRS. EASA AD 2019–0021 requires amending the emergency procedures of the applicable RFM, doing the modification of the wiring harness, and then removing the amendment to the RFM. You may examine the MCAI in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0462. Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public. Conclusion The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this PO 00000 Frm 00025 Fmt 4700 Sfmt 4700 69489 final rule as proposed, except for minor editorial changes. The FAA has determined that these minor changes: • Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and • Do not add any additional burden upon the public than was already proposed in the NPRM. Related Service Information Under 1 CFR Part 51 Airbus Helicopters has issued Alert Service Bulletin No. AS332–34.00.60, Revision 1, dated March 29, 2019. This service information describes procedures for a wiring modification of the ‘‘flight/ground’’ logic signal source of the AHRS 1, which changes the ‘‘flight/ground’’ logic signal source to independent redundant signals. 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 Airbus Helicopters has issued Alert Service Bulletin No. AS332–34.00.60, Revision 0, dated December 6, 2018. The service information describes procedures for a wiring modification of the ‘‘flight/ground’’ logic signal source of the AHRS 1, which changes the ‘‘flight/ground’’ logic signal source to independent redundant signals. Airbus Service Bulletin No. AS332–34.00.60, Revision 1, dated March 29, 2019, clarifies the procedures for the postinstallation test in Alert Service Bulletin No. AS332–34.00.60, Revision 0, dated December 6, 2018. Differences Between This AD and the MCAI or Service Information EASA AD 2019–0021 specifies to do the modification within 6 months. This AD requires the modification be done within 100 hours time-in-service or before intentional flight into IMC, whichever occurs first. The FAA has determined this compliance time represents the maximum interval of time allowable for the affected helicopters to continue to safely operate before the modification is done. Costs of Compliance The FAA estimates that this AD affects 8 helicopters of U.S. registry. The FAA estimates the following costs to comply with this AD: E:\FR\FM\03NOR1.SGM 03NOR1 69490 Federal Register / Vol. 85, No. 213 / Tuesday, November 3, 2020 / Rules and Regulations ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 7 work-hours × $85 per hour = $595 .......................................................................................... $40 $635 $5,080 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 khammond on DSKJM1Z7X2PROD with RULES 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, VerDate Sep<11>2014 15:54 Nov 02, 2020 Jkt 253001 on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. Airbus Helicopters modification 0728576 embodied in production. List of Subjects in 14 CFR Part 39 Joint Aircraft Service Component (JASC) Code 3420, Attitude and direction data system. 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: ■ 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: ■ 2020–22–13 Airbus Helicopters: Amendment 39–21309; Docket No. FAA–2020–0462; Product Identifier 2019–SW–021–AD. This airworthiness directive (AD) is effective December 8, 2020. (b) Affected ADs (c) Applicability This AD applies to Airbus Helicopters Model AS332C1 and AS332L1 helicopters, certificated in any category, all manufacturer serial numbers, equipped with an Advanced Helicopter Cockpit & Avionics System (AHCAS), except helicopters that have Fmt 4700 This AD was prompted by a report that the affected helicopters use the same ‘‘flight/ ground’’ logic signal, instead of independent redundant signals. The FAA is issuing this AD to address certain helicopters that use the same ‘‘flight/ground’’ logic signal, instead of independent redundant signals. If both attitude and heading reference systems (AHRS) incorrectly receive ‘‘ground’’ status in flight, as a result for instance of a single failure, this will generate consistent erroneous computation of the attitudes and vertical speed during helicopter maneuvers with consequent incorrect flight data indications to the flight crew on both primary displays. Erroneous flight information could lead to increased workload for the flight crew when the upper modes of the automatic flight control system are not engaged, possibly resulting in reduced control of the helicopter during high speed maneuvers in instrumental meteorological conditions (IMC). Comply with this AD within the compliance times specified, unless already done. (g) Required Actions None. Frm 00026 (e) Reason (f) Compliance (a) Effective Date PO 00000 (d) Subject Sfmt 4700 (1) Within 30 days after the effective date of this AD: Amend the emergency procedures of the existing rotorcraft flight manual (RFM) for your helicopter by inserting the supplemental text specified in figure 1 to paragraph (g)(1) of this AD, immediately following paragraph 9 GROUND/FLIGHT LOGIC FAULT. E:\FR\FM\03NOR1.SGM 03NOR1 Federal Register / Vol. 85, No. 213 / Tuesday, November 3, 2020 / Rules and Regulations (h) Special Flight Permit Special flight permits may be issued in accordance with 14 CFR 21.197 and 21.199 to operate the helicopter to a location where the helicopter can be modified (if the operator elects to do so), provided the helicopter is operated under visual flight rules only. khammond on DSKJM1Z7X2PROD with RULES (i) Credit for Previous Actions This paragraph provides credit for the actions specified in paragraph (g) of this AD, if those actions were performed before the effective date of this AD using Airbus Helicopters Alert Service Bulletin No. AS332–34.00.60, Revision 0, dated December 6, 2018. VerDate Sep<11>2014 15:54 Nov 02, 2020 Jkt 253001 (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: George Schwab, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; phone: 817–222–5110; email: 9-ASWFTW-AMOC-Requests@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. (k) Related Information (1) The subject of this AD is addressed in European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD 2019–0021, dated February 1, 2019; corrected February 4, 2019. 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– 2020–0462. (2) For more information about this AD, contact George Schwab, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; PO 00000 Frm 00027 Fmt 4700 Sfmt 4700 phone: 817–222–5110; email: george.schwab@faa.gov. (3) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (l)(3) and (4) of this AD. (l) 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 this AD specifies otherwise. (i) Airbus Helicopters Alert Service Bulletin No. AS332–34.00.60, Revision 1, dated March 29, 2019. (ii) [Reserved] (3) For service information identified in this AD, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; phone: (972) 641–0000 or (800) 232–0323; fax: (972) 641–3775; or at https:// www.airbus.com/helicopters/services/ 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. E:\FR\FM\03NOR1.SGM 03NOR1 ER03NO20.035</GPH> (2) Within 100 hours time-in-service or before intentional flight into IMC, whichever occurs first after the effective date of this AD, do the wiring modification of the ‘‘flight/ ground’’ logic signal source of the AHRS 1 in accordance with the Accomplishment Instructions of Airbus Helicopters Alert Service Bulletin No. AS332–34.00.60, Revision 1, dated March 29, 2019. After completion of the wiring modification, the RFM amendment required by paragraph (g)(1) of this AD must be removed from the existing RFM for your helicopter. 69491 69492 Federal Register / Vol. 85, No. 213 / Tuesday, November 3, 2020 / Rules and Regulations (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 October 19, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–24260 Filed 11–2–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0744; Project Identifier 2019–CE–056–AD; Amendment 39–21285; AD 2020–21–12] RIN 2120–AA64 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd Model PC–24 airplanes. This AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as the vinyl grommets on the upper panel assembly on the left-hand (LH) and right-hand (RH) emergency exits becoming rigid after exposure to low temperatures, which could result in failure of the emergency exits to open during an evacuation. This AD requires replacing the grommets. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective December 8, 2020. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 8, 2020. ADDRESSES: For service information identified in this final rule, contact Pilatus Aircraft Ltd., Customer Technical Support (MCC), P.O. Box 992, CH–6371 Stans, Switzerland; telephone: +41 (0)41 619 67 74; fax: +41 (0)41 619 67 73; email: Techsupport@pilatusaircraft.com; internet: https:// www.pilatus-aircraft.com/en. You may view this service information at the khammond on DSKJM1Z7X2PROD with RULES SUMMARY: VerDate Sep<11>2014 15:54 Nov 02, 2020 Jkt 253001 FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call 816–329–4148. It is also available on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0744. parts with serviceable parts, as defined in this AD, and prohibits (re-)installation of affected parts. Examining the AD Docket Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public. You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0744 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, the MCAI, 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: Doug Rudolph, Aerospace Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329–4059; fax: (816) 329–4090; email: doug.rudolph@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 Pilatus Aircraft Ltd Model PC– 24 airplanes with an emergency exit grommet part number (P/N) 944.87.32.001 installed. The NPRM published in the Federal Register on August 7, 2020 (85 FR 47919). The NPRM proposed to correct an unsafe condition of the specified products and was based on MCAI originated by the European Union Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Union. EASA issued AD No. 2019–0293, dated December 4, 2019 (referred to after this as ‘‘the MCAI’’), which states: After exposure to low temperatures, the vinyl grommets which hold the upper panel assembly in position on the left-hand and right-hand emergency exits were found to become rigid. This condition, if not corrected, could result in failure of the emergency exits to open during an evacuation, possibly resulting in injury to occupants. To address this potential unsafe condition, Pilatus issued the [service bulletin] SB to provide modification instructions. For the reason described above, this [EASA] AD requires replacement of affected PO 00000 Frm 00028 Fmt 4700 Sfmt 4700 You may obtain further information by examining the MCAI in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0744. Conclusion The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule as proposed. Related Service Information Under 1 CFR Part 51 The FAA reviewed Pilatus PC–24 Service Bulletin No. 25–005, dated August 12, 2019. The service information contains procedures for replacing the grommets that are used to hold the upper panel assembly in position on the LH and RH emergency exits with different part-numbered grommets. 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 39 products of U.S. registry. The FAA also estimates that it will take 1.0 work-hour per product to comply with the requirements of this AD. The average labor rate is $85 per work-hour. Required parts will cost about $30 per product. Based on these figures, the FAA estimates the cost of the AD on U.S. operators to be $4,485, or $115 per product. According to the manufacturer, some of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected individuals. The FAA does not control warranty coverage for affected individuals. As a result, the FAA has included all costs in this cost estimate. 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 E:\FR\FM\03NOR1.SGM 03NOR1

Agencies

[Federal Register Volume 85, Number 213 (Tuesday, November 3, 2020)]
[Rules and Regulations]
[Pages 69488-69492]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-24260]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0462; Product Identifier 2019-SW-021-AD; Amendment 
39-21309; AD 2020-22-13]
RIN 2120-AA64


Airworthiness Directives; Airbus Helicopters

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Airbus Helicopters Model AS332C1 and AS332L1 helicopters. This 
AD was prompted by a report that the affected helicopters use the same 
``flight/ground'' logic signal, instead of independent redundant 
signals. This AD requires amending the emergency procedures of the 
existing rotorcraft flight manual (RFM) for your helicopter, a wiring 
modification of the ``flight/ground'' logic signal source of the 
attitude and heading reference system (AHRS) 1, and then removal of the 
amendment to the existing RFM for your helicopter. The FAA is issuing 
this AD to address the unsafe condition on these products.

DATES: This AD is effective December 8, 2020.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of December 8, 
2020.

ADDRESSES: For service information identified in this final rule, 
contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 
75052; phone: (972) 641-0000 or (800) 232-0323; fax: (972) 641-3775; or 
at https://

[[Page 69489]]

www.airbus.com/helicopters/services/hnical-support.html. 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.

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-
0462; 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, the European Aviation Safety Agency (now European 
Union Aviation Safety Agency) (EASA) AD, any comments received, and 
other information. The street address for Docket Operations is listed 
above.

FOR FURTHER INFORMATION CONTACT: George Schwab, Aviation Safety 
Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 
10101 Hillwood Pkwy., Fort Worth, TX 76177; phone: 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 certain Airbus 
Helicopters Model AS332C1 and AS332L1 helicopters. The NPRM published 
in the Federal Register on June 4, 2020 (85 FR 34375). The NPRM was 
prompted by a report that the affected helicopters use the same 
``flight/ground'' logic signal instead of independent redundant 
signals. The NPRM proposed to require amending the emergency procedures 
of the existing RFM for your helicopter, a wiring modification of the 
``flight/ground'' logic signal source of the AHRS 1, and then removal 
of the amendment to the existing RFM for your helicopter. The FAA is 
issuing this AD to address certain helicopters that use the same 
``flight/ground'' logic signal, instead of independent redundant 
signals. If both AHRS incorrectly receive ``ground'' status in flight, 
as a result for instance of a single failure, this will generate 
consistent erroneous computation of the attitudes and vertical speed 
during helicopter maneuvers with consequent incorrect flight data 
indications to the flight crew on both primary displays. Erroneous 
flight information could lead to increased workload for the flight crew 
when the upper modes of the automatic flight control system are not 
engaged, possibly resulting in reduced control of the helicopter during 
high speed maneuvers in instrumental meteorological conditions (IMC).
    EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD 2019-0021, dated February 1, 2019; 
corrected February 4, 2019 (EASA AD 2019-0021) (referred to after this 
as the Mandatory Continuing Airworthiness Information, or ``the 
MCAI''), to correct an unsafe condition for certain Airbus Helicopters 
Model AS332C1 and AS332L1 helicopters. EASA advises that the AHRS 1 and 
AHRS 2 installed on AS332C1e and AS332L1e helicopters use the same 
``flight/ground'' logic signal, instead of independent redundant 
signals, as required by the original design specification. If both AHRS 
incorrectly receive ``ground'' status in flight, as a result for 
instance of a single failure, this will generate consistent erroneous 
computation of the attitudes and vertical speed during helicopter 
maneuvers with consequent incorrect flight data indications to the 
flight crew on both primary displays. EASA AD 2019-0021 states that 
this condition, if not corrected, could lead to increased workload for 
the flight crew when the upper modes of the automatic flight control 
system are not engaged, possibly resulting in reduced control of the 
helicopter during high speed maneuvers in IMC.
    EASA further advises that Airbus Helicopters has issued rush 
revisions to the RFM, and developed a modification of the wiring 
harness, ensuring independent sources of the ``flight/ground'' logic 
signal for both AHRS. EASA AD 2019-0021 requires amending the emergency 
procedures of the applicable RFM, doing the modification of the wiring 
harness, and then removing the amendment to the RFM.
    You may examine the MCAI in the AD docket on the internet at 
https://www.regulations.gov by searching for and locating Docket No. 
FAA-2020-0462.

Comments

    The FAA gave the public the opportunity to participate in 
developing this final rule. The FAA received no comments on the NPRM or 
on the determination of the cost to the public.

Conclusion

    The FAA reviewed the relevant data and determined that air safety 
and the public interest require adopting this final rule as proposed, 
except for minor editorial changes.
    The FAA has determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    Airbus Helicopters has issued Alert Service Bulletin No. AS332-
34.00.60, Revision 1, dated March 29, 2019. This service information 
describes procedures for a wiring modification of the ``flight/ground'' 
logic signal source of the AHRS 1, which changes the ``flight/ground'' 
logic signal source to independent redundant signals.
    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

    Airbus Helicopters has issued Alert Service Bulletin No. AS332-
34.00.60, Revision 0, dated December 6, 2018. The service information 
describes procedures for a wiring modification of the ``flight/ground'' 
logic signal source of the AHRS 1, which changes the ``flight/ground'' 
logic signal source to independent redundant signals. Airbus Service 
Bulletin No. AS332-34.00.60, Revision 1, dated March 29, 2019, 
clarifies the procedures for the post-installation test in Alert 
Service Bulletin No. AS332-34.00.60, Revision 0, dated December 6, 
2018.

Differences Between This AD and the MCAI or Service Information

    EASA AD 2019-0021 specifies to do the modification within 6 months. 
This AD requires the modification be done within 100 hours time-in-
service or before intentional flight into IMC, whichever occurs first. 
The FAA has determined this compliance time represents the maximum 
interval of time allowable for the affected helicopters to continue to 
safely operate before the modification is done.

Costs of Compliance

    The FAA estimates that this AD affects 8 helicopters of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

[[Page 69490]]



                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
7 work-hours x $85 per hour = $595...........................             $40             $635           $5,080
----------------------------------------------------------------------------------------------------------------

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.

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:

2020-22-13 Airbus Helicopters: Amendment 39-21309; Docket No. FAA-
2020-0462; Product Identifier 2019-SW-021-AD.

(a) Effective Date

    This airworthiness directive (AD) is effective December 8, 2020.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Airbus Helicopters Model AS332C1 and AS332L1 
helicopters, certificated in any category, all manufacturer serial 
numbers, equipped with an Advanced Helicopter Cockpit & Avionics 
System (AHCAS), except helicopters that have Airbus Helicopters 
modification 0728576 embodied in production.

(d) Subject

    Joint Aircraft Service Component (JASC) Code 3420, Attitude and 
direction data system.

(e) Reason

    This AD was prompted by a report that the affected helicopters 
use the same ``flight/ground'' logic signal, instead of independent 
redundant signals. The FAA is issuing this AD to address certain 
helicopters that use the same ``flight/ground'' logic signal, 
instead of independent redundant signals. If both attitude and 
heading reference systems (AHRS) incorrectly receive ``ground'' 
status in flight, as a result for instance of a single failure, this 
will generate consistent erroneous computation of the attitudes and 
vertical speed during helicopter maneuvers with consequent incorrect 
flight data indications to the flight crew on both primary displays. 
Erroneous flight information could lead to increased workload for 
the flight crew when the upper modes of the automatic flight control 
system are not engaged, possibly resulting in reduced control of the 
helicopter during high speed maneuvers in instrumental 
meteorological conditions (IMC).

(f) Compliance

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

(g) Required Actions

    (1) Within 30 days after the effective date of this AD: Amend 
the emergency procedures of the existing rotorcraft flight manual 
(RFM) for your helicopter by inserting the supplemental text 
specified in figure 1 to paragraph (g)(1) of this AD, immediately 
following paragraph 9 GROUND/FLIGHT LOGIC FAULT.

[[Page 69491]]

[GRAPHIC] [TIFF OMITTED] TR03NO20.035

    (2) Within 100 hours time-in-service or before intentional 
flight into IMC, whichever occurs first after the effective date of 
this AD, do the wiring modification of the ``flight/ground'' logic 
signal source of the AHRS 1 in accordance with the Accomplishment 
Instructions of Airbus Helicopters Alert Service Bulletin No. AS332-
34.00.60, Revision 1, dated March 29, 2019. After completion of the 
wiring modification, the RFM amendment required by paragraph (g)(1) 
of this AD must be removed from the existing RFM for your 
helicopter.

(h) Special Flight Permit

    Special flight permits may be issued in accordance with 14 CFR 
21.197 and 21.199 to operate the helicopter to a location where the 
helicopter can be modified (if the operator elects to do so), 
provided the helicopter is operated under visual flight rules only.

(i) Credit for Previous Actions

    This paragraph provides credit for the actions specified in 
paragraph (g) of this AD, if those actions were performed before the 
effective date of this AD using Airbus Helicopters Alert Service 
Bulletin No. AS332-34.00.60, Revision 0, dated December 6, 2018.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Rotorcraft Standards Branch, FAA, may approve 
AMOCs for this AD. Send your proposal to: George Schwab, Aviation 
Safety Engineer, Safety Management Section, Rotorcraft Standards 
Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; phone: 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.

(k) Related Information

    (1) The subject of this AD is addressed in European Aviation 
Safety Agency (now European Union Aviation Safety Agency) (EASA) AD 
2019-0021, dated February 1, 2019; corrected February 4, 2019. 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-
2020-0462.
    (2) For more information about this AD, contact George Schwab, 
Aviation Safety Engineer, Safety Management Section, Rotorcraft 
Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; 
phone: 817-222-5110; email: [email protected].
    (3) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (l)(3) and (4) of this AD.

(l) 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 this AD specifies otherwise.
    (i) Airbus Helicopters Alert Service Bulletin No. AS332-
34.00.60, Revision 1, dated March 29, 2019.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact 
Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; 
phone: (972) 641-0000 or (800) 232-0323; fax: (972) 641-3775; or at 
https://www.airbus.com/helicopters/services/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.

[[Page 69492]]

    (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 October 19, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-24260 Filed 11-2-20; 8:45 am]
BILLING CODE 4910-13-P