Airworthiness Directives; Leonardo S.p.a. Helicopters, 34658-34661 [2020-12155]

Download as PDF 34658 Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Proposed Rules 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 removing Airworthiness Directive (AD) 2017–18–17, Amendment 39–19026 (82 FR 43160, September 14, 2017), and adding the following new AD: ■ Airbus SAS: Docket No. FAA–2020–0464; Product Identifier 2020–NM–040–AD. (a) Comments Due Date The FAA must receive comments by July 23, 2020. (b) Affected ADs This AD replaces AD 2017–18–17, Amendment 39–19026 (82 FR 43160, September 14, 2017) (‘‘AD 2017–18–17’’). (c) Applicability This AD applies to all Airbus SAS Model A300 B4–603, A300 B4–620, A300 B4–622, A300 B4–605R, A300 B4–622R, A300 F4– 605R, A300 F4–622R, and A300 C4–605R Variant F airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Reason This AD was prompted by a report indicating that the material used to manufacture the upper frame feet was changed and negatively affected the fatigue life of the frame feet, and a determination that more work is required for certain airplanes that were previously modified. The FAA is issuing this AD to address cracking of the center section of the fuselage, which could result in a ruptured frame foot and reduced structural integrity of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. khammond on DSKJM1Z7X2PROD with PROPOSALS (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2020–0051, dated March 11, 2020 (‘‘EASA AD 2020–0051’’). (h) Exceptions to EASA AD 2020–0051 (1) Where EASA AD 2020–0051 refers to its effective date, this AD requires using the effective date of this AD. (2) The ‘‘Remarks’’ section of EASA AD 2020–0051 does not apply to this AD. (3) For airplanes on which the modification specified in Airbus Service Bulletin A300–53–6178 has been done: Where paragraph (4) of EASA AD 2020–0051 specifies to do certain actions ‘‘no later than 6 months (estimated by projection of airplane VerDate Sep<11>2014 16:34 Jun 05, 2020 Jkt 250001 usage) prior to exceeding 24,500 flight cycles or 42,700 flight hours, whichever occurs first, after Airbus Service Bulletin A300–53–6178 embodiment (at any revision),’’ this AD requires doing those actions prior to exceeding 24,100 total flight cycles or 42,000 total flight hours, whichever occurs first after doing the modification. by searching for and locating Docket No. FAA–2020–0464. (2) For more information about this AD, contact Dan Rodina, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206–231–3225; email: dan.rodina@faa.gov. (i) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Large Aircraft Section, 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 Large Aircraft Section, International Validation Branch, send it to the attention of the person identified in paragraph (j)(2) of this AD. Information may be emailed to: 9-ANM-116AMOC-REQUESTS@faa.gov. 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. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, Large Aircraft Section, International Validation Branch, FAA; or EASA; or Airbus SAS’s EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. (3) Required for Compliance (RC): For any service information referenced in EASA AD 2020–0051 that contains RC procedures and tests: Except as required by paragraph (i)(2) of this AD, RC procedures and tests must be done to comply with this AD; any procedures or tests that are not identified as RC are recommended. Those procedures and tests that are not identified as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the procedures and tests identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to procedures or tests identified as RC require approval of an AMOC. Issued on June 1, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (j) Related Information (1) For information about EASA AD 2020– 0051, contact the EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; phone: +49 221 89990 6017; email: ADs@easa.europa.eu; internet: www.easa.europa.eu. You may find this EASA AD on the EASA website at https://ad.easa.europa.eu. You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. This material may be found in the AD docket on the internet at https://www.regulations.gov PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 [FR Doc. 2020–12225 Filed 6–5–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0554; Product Identifier 2016–SW–088–AD] RIN 2120–AA64 Airworthiness Directives; Leonardo S.p.a. Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to adopt a new airworthiness directive (AD) for Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD would require removing certain main gearbox (MGB) input modules from service. This proposed AD was prompted by the discovery that a batch of duplex bearings, which are installed on the MGB input modules, are defective. The actions of this proposed AD are intended to address an unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by July 23, 2020. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Docket: Go to https://www.regulations.gov. Follow the online instructions for sending your comments electronically. • Fax: 202–493–2251. • Mail: Send comments to the U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590–0001. • Hand Delivery: Deliver to the ‘‘Mail’’ address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. SUMMARY: Examining the AD Docket You may examine the AD docket on the internet at https:// E:\FR\FM\08JNP1.SGM 08JNP1 Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Proposed Rules www.regulations.gov by searching for and locating Docket No. FAA–2020– 0554; or in person at the Docket Operations Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, 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. Comments will be available in the AD docket shortly after receipt. For service information identified in this proposed rule, contact Leonardo S.p.a. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone +39–0331–225074; fax +39–0331–229046; or at https:// www.leonardocompany.com/en/home. You may view the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. Rao Edupuganti, Aviation Safety Engineer, Regulations and Policy Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5110; email rao.edupuganti@faa.gov. FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: khammond on DSKJM1Z7X2PROD with PROPOSALS Comments Invited The FAA invites you to participate in this rulemaking by submitting written comments, data, or views. The FAA also invites comments relating to the economic, environmental, energy, or federalism impacts that might result from adopting the proposals in this document. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. To ensure the docket does not contain duplicate comments, commenters should send only one copy of written comments, or if comments are filed electronically, commenters should submit only one time. The FAA will file in the docket all comments received, as well as a report summarizing each substantive public contact with FAA personnel concerning this proposed rulemaking. Before acting on this proposal, the FAA will consider all comments received on or before the closing date for comments. The FAA will consider comments filed after the comment period has closed if it is possible to do so without incurring expense or delay. The FAA may change VerDate Sep<11>2014 16:34 Jun 05, 2020 Jkt 250001 this proposal in light of the comments received. Discussion EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2016– 0255R1, dated January 17, 2017 (EASA AD 2016–0255R1) to correct an unsafe condition for Leonardo (formerly Finmeccanica S.p.A., AgustaWestland Philadelphia Corporation, Agusta Aerospace Corporation) Model AB139 and AW139 helicopters with certain serial-numbered MGB input modules part-number (P/N) 3K6320A00135 or P/ N 3K6320A00136 installed. EASA advises that the supplier of a batch of duplex bearings installed on MGB input modules reported that the bearings were defective, due to a quality control issue. This condition, if not detected or corrected, could lead to damage of the input module duplex ball bearing inner race, possibly resulting in loss of engine power and reduced control of the helicopter. Accordingly, EASA AD 2016–0255R1 requires removing the affected MGB input modules from service. FAA’s Determination These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA is proposing this AD after evaluating all known relevant information and determining that an unsafe condition is likely to exist or develop on other helicopters of the same type designs. Related Service Information The FAA reviewed Leonardo Helicopters Bollettino Tecnico No. 139– 303, dated September 20, 2016, which specifies replacing certain duplex bearings on MGB left-hand and righthand input modules on Model AB139 and AW139 helicopters. Proposed AD Requirements This proposed AD would require compliance with certain procedures described in the manufacturer’s service bulletin. For helicopters with one affected MGB input module installed, this proposed AD would require the affected MGB input module to be removed from service within 1200 hours time-in-service (TIS). For helicopters with two affected MGB input modules installed, this proposed AD would require both affected MGB input modules to be removed from service within 300 hours TIS. PO 00000 Frm 00009 Fmt 4702 Sfmt 4702 34659 Differences Between This Proposed AD and the EASA AD The EASA AD requires returning affected parts and sending information to Leonardo; however, this proposed AD would not. Costs of Compliance The FAA estimates that this proposed AD would affect 71 helicopters of U.S. Registry. The FAA estimates that operators may incur the following costs in order to comply with this AD. Labor costs are estimated at $85 per workhour. Replacing one input module would require about 60 work-hours for an estimated cost of $5,100 and parts would cost about $84,847 for an estimated cost of $89,947 per helicopter. Replacing two input modules would require about 100 work-hours for an estimated cost of $8,500 and parts would cost about $169,694 for an estimated cost of $178,194 per helicopter. 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 The FAA determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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, I certify this proposed regulation: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866, 2. Will not affect intrastate aviation in Alaska, and E:\FR\FM\08JNP1.SGM 08JNP1 34660 Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Proposed Rules 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. the FAA proposes to amend 14 CFR part 39 as follows: List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. ■ khammond on DSKJM1Z7X2PROD with PROPOSALS This AD defines the unsafe condition as defective duplex bearings on MGB input modules, due to a quality control issue. This condition could result in damage including corrosion and cracking, which could result in excessive heat of the input module duplex ball bearing inner race and subsequent loss of engine power and loss of helicopter control. (c) Comments Due Date The FAA must receive comments by July 23, 2020. You are responsible for performing each action required by this AD within the VerDate Sep<11>2014 16:34 Jun 05, 2020 Jkt 250001 ■ This AD applies to Leonardo S.p.a. Model AB139 and AW139 helicopters, certified in any category, with main gearbox (MGB) input module part number (P/N) 3K6320A00135 with serial number (S/N) KHI–200 or P/N 3K6320A00136 with an S/N listed in Table 1 to this paragraph installed. specified compliance time unless it has already been accomplished prior to that time. (f) Alternative Methods of Compliance (AMOCs) (e) Required Actions (1) The Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Rao Edupuganti, Aviation Safety Engineer, Regulations and Policy Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5110; email 9-ASW-FTWAMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, the FAA suggests that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office before 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 (AD): (b) Unsafe Condition (d) Compliance (a) Applicability (1) If the P/N and S/N of both MGB input modules are listed in paragraph (a) of this AD, within 300 hours time-in-service (TIS), remove from service each MGB input module. (2) If the P/N and S/N of only one MGB input module are listed in paragraph (a) of this AD, within 1,200 hours TIS, remove from service that MGB input module. (3) After the effective date of this AD, do not install an MGB input module with a P/ N and S/N listed in paragraph (a) of this AD on any helicopter. PO 00000 Frm 00010 Fmt 4702 Sfmt 4702 E:\FR\FM\08JNP1.SGM 08JNP1 EP08JN20.003</GPH> The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, PART 39—AIRWORTHINESS DIRECTIVES Leonardo S.p.a.: Docket No. FAA–2020– 0554; Product Identifier 2016–SW–088– AD. Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Proposed Rules operating any aircraft complying with this AD through an AMOC. (g) Additional Information The subject of this AD is addressed in European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD No. 2016–0255R1, dated January 17, 2017. You may view the EASA AD on the internet at https://www.regulations.gov in the AD Docket. (h) Subject Joint Aircraft Service Component (JASC) Code: 6320, Rotor Drive—Gearbox. Issued on June 1, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–12155 Filed 6–5–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0555; Project Identifier AD–2020–00615–E] RIN 2120–AA64 Airworthiness Directives; General Electric Company Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GEnx–1B64/P2, –1B67/P2, –1B70/P2, –1B70C/P2,–1B70/75/P2, –1B74/75/P2, –1B76/P2, –1B76A/P2, and GEnx–2B67/ P model turbofan engines. This proposed AD was prompted by the detection of melt-related freckles in the billet, which may reduce the life limits of certain high-pressure turbine (HPT) rotor stage 2 disks and a certain stages 6–10 compressor rotor spool. This proposed AD would require the removal of certain HPT rotor stage 2 disk and the removal of a certain stages 6–10 compressor rotor spool before reaching their new life limits. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by July 23, 2020. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. khammond on DSKJM1Z7X2PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 16:34 Jun 05, 2020 Jkt 250001 • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this NPRM, contact General Electric Company, GE Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215; phone: 513–552–3272; email: aviation.fleetsupport@ge.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7759. 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– 0555; 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 NPRM, any comments received, and other information. The street address for Docket Operations is listed above. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Mehdi Lamnyi, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781–238–7743; fax: 781–238–7199; email: Mehdi.Lamnyi@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2020–0555; Project Identifier AD–2020–00615–E’’ at the beginning of your comments. The FAA specifically invites comments on the overall regulatory, economic, environmental, and energy aspects of this NPRM. The FAA will consider all comments received by the closing date and may amend this NPRM because of those comments. Except for Confidential Business Information (CBI) as described in the following paragraph, and other information as described in 14 CFR 11.35, the FAA will post all comments received, without change, to https:// www.regulations.gov, including any PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 34661 personal information you provide. The FAA will also post a report summarizing each substantive verbal contact received about this NPRM. Confidential Business Information Confidential Business Information (CBI) is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this AD contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this AD, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as ‘‘PROPIN.’’ The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this AD. Submissions containing CBI should be sent to Mehdi Lamnyi, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. Discussion The FAA was notified of the detection of melt-related freckles in the billet during the forging inspection of HPT disks, which may reduce the life limits of certain HPT rotor stage 2 disks and a certain stages 6–10 compressor rotor spool. The inspection process in place at the time of production did not identify these freckles. The manufacturer determined the need to reduce the life limits of the affected HPT rotor stage 2 disks and a certain stages 6–10 compressor rotor spool. This AD requires removal of these affected parts before reaching the new life limits. This condition, if not addressed, could result in uncontained release of both the HPT rotor stage 2 disk and the stages 6–10 compressor rotor spool, damage to the engine, and damage to the aircraft. Related Service Information The FAA reviewed GE GEnx–1B Service Bulletin (SB) 72–0473 R00, dated April 14, 2020; GE GEnx–1B SB 72–0474 R00, dated April 14, 2020; and GE GEnx–2B SB 72–0416 R00, dated April 14, 2020. GE GEnx–1B SB 72– 0473 R00 describes procedures for removing and replacing the HPT rotor stage 2 disks on GE GEnx–1B model engines. GE GEnx–1B SB 72–0474 R00 describes procedures for removing and replacing the stages 6–10 compressor E:\FR\FM\08JNP1.SGM 08JNP1

Agencies

[Federal Register Volume 85, Number 110 (Monday, June 8, 2020)]
[Proposed Rules]
[Pages 34658-34661]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-12155]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0554; Product Identifier 2016-SW-088-AD]
RIN 2120-AA64


Airworthiness Directives; Leonardo S.p.a. Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This 
proposed AD would require removing certain main gearbox (MGB) input 
modules from service. This proposed AD was prompted by the discovery 
that a batch of duplex bearings, which are installed on the MGB input 
modules, are defective. The actions of this proposed AD are intended to 
address an unsafe condition on these products.

DATES: The FAA must receive comments on this proposed AD by July 23, 
2020.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Docket: Go to https://www.regulations.gov. Follow the online instructions for sending your 
comments electronically.
     Fax: 202-493-2251.
     Mail: Send comments to the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590-0001.
     Hand Delivery: Deliver to the ``Mail'' address between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

Examining the AD Docket

    You may examine the AD docket on the internet at https://

[[Page 34659]]

www.regulations.gov by searching for and locating Docket No. FAA-2020-
0554; or in person at the Docket Operations Office between 9 a.m. and 5 
p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this proposed AD, 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. Comments will be available in the AD docket 
shortly after receipt.
    For service information identified in this proposed rule, contact 
Leonardo S.p.a. Helicopters, Emanuele Bufano, Head of Airworthiness, 
Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone 
+39-0331-225074; fax +39-0331-229046; or at https://www.leonardocompany.com/en/home. You may view the referenced service 
information at the FAA, Office of the Regional Counsel, Southwest 
Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177.

FOR FURTHER INFORMATION CONTACT: Rao Edupuganti, Aviation Safety 
Engineer, Regulations and Policy Section, Rotorcraft Standards Branch, 
FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817-222-
5110; email [email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    The FAA invites you to participate in this rulemaking by submitting 
written comments, data, or views. The FAA also invites comments 
relating to the economic, environmental, energy, or federalism impacts 
that might result from adopting the proposals in this document. The 
most helpful comments reference a specific portion of the proposal, 
explain the reason for any recommended change, and include supporting 
data. To ensure the docket does not contain duplicate comments, 
commenters should send only one copy of written comments, or if 
comments are filed electronically, commenters should submit only one 
time.
    The FAA will file in the docket all comments received, as well as a 
report summarizing each substantive public contact with FAA personnel 
concerning this proposed rulemaking. Before acting on this proposal, 
the FAA will consider all comments received on or before the closing 
date for comments. The FAA will consider comments filed after the 
comment period has closed if it is possible to do so without incurring 
expense or delay. The FAA may change this proposal in light of the 
comments received.

Discussion

    EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD 2016-0255R1, dated January 17, 2017 
(EASA AD 2016-0255R1) to correct an unsafe condition for Leonardo 
(formerly Finmeccanica S.p.A., AgustaWestland Philadelphia Corporation, 
Agusta Aerospace Corporation) Model AB139 and AW139 helicopters with 
certain serial-numbered MGB input modules part-number (P/N) 
3K6320A00135 or P/N 3K6320A00136 installed. EASA advises that the 
supplier of a batch of duplex bearings installed on MGB input modules 
reported that the bearings were defective, due to a quality control 
issue. This condition, if not detected or corrected, could lead to 
damage of the input module duplex ball bearing inner race, possibly 
resulting in loss of engine power and reduced control of the 
helicopter. Accordingly, EASA AD 2016-0255R1 requires removing the 
affected MGB input modules from service.

FAA's Determination

    These helicopters have been approved by EASA and are approved for 
operation in the United States. Pursuant to the FAA's bilateral 
agreement with the European Union, EASA has notified the FAA about the 
unsafe condition described in its AD. The FAA is proposing this AD 
after evaluating all known relevant information and determining that an 
unsafe condition is likely to exist or develop on other helicopters of 
the same type designs.

Related Service Information

    The FAA reviewed Leonardo Helicopters Bollettino Tecnico No. 139-
303, dated September 20, 2016, which specifies replacing certain duplex 
bearings on MGB left-hand and right-hand input modules on Model AB139 
and AW139 helicopters.

Proposed AD Requirements

    This proposed AD would require compliance with certain procedures 
described in the manufacturer's service bulletin. For helicopters with 
one affected MGB input module installed, this proposed AD would require 
the affected MGB input module to be removed from service within 1200 
hours time-in-service (TIS). For helicopters with two affected MGB 
input modules installed, this proposed AD would require both affected 
MGB input modules to be removed from service within 300 hours TIS.

Differences Between This Proposed AD and the EASA AD

    The EASA AD requires returning affected parts and sending 
information to Leonardo; however, this proposed AD would not.

Costs of Compliance

    The FAA estimates that this proposed AD would affect 71 helicopters 
of U.S. Registry. The FAA estimates that operators may incur the 
following costs in order to comply with this AD. Labor costs are 
estimated at $85 per work-hour.
    Replacing one input module would require about 60 work-hours for an 
estimated cost of $5,100 and parts would cost about $84,847 for an 
estimated cost of $89,947 per helicopter.
    Replacing two input modules would require about 100 work-hours for 
an estimated cost of $8,500 and parts would cost about $169,694 for an 
estimated cost of $178,194 per helicopter.

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

    The FAA determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would 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, I certify this proposed regulation:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866,
    2. Will not affect intrastate aviation in Alaska, and

[[Page 34660]]

    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 Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 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 (AD):

Leonardo S.p.a.: Docket No. FAA-2020-0554; Product Identifier 2016-
SW-088-AD.

(a) Applicability

    This AD applies to Leonardo S.p.a. Model AB139 and AW139 
helicopters, certified in any category, with main gearbox (MGB) 
input module part number (P/N) 3K6320A00135 with serial number (S/N) 
KHI-200 or P/N 3K6320A00136 with an S/N listed in Table 1 to this 
paragraph installed. 
[GRAPHIC] [TIFF OMITTED] TP08JN20.003

(b) Unsafe Condition

    This AD defines the unsafe condition as defective duplex 
bearings on MGB input modules, due to a quality control issue. This 
condition could result in damage including corrosion and cracking, 
which could result in excessive heat of the input module duplex ball 
bearing inner race and subsequent loss of engine power and loss of 
helicopter control.

(c) Comments Due Date

    The FAA must receive comments by July 23, 2020.

(d) Compliance

    You are responsible for performing each action required by this 
AD within the specified compliance time unless it has already been 
accomplished prior to that time.

(e) Required Actions

    (1) If the P/N and S/N of both MGB input modules are listed in 
paragraph (a) of this AD, within 300 hours time-in-service (TIS), 
remove from service each MGB input module.
    (2) If the P/N and S/N of only one MGB input module are listed 
in paragraph (a) of this AD, within 1,200 hours TIS, remove from 
service that MGB input module.
    (3) After the effective date of this AD, do not install an MGB 
input module with a P/N and S/N listed in paragraph (a) of this AD 
on any helicopter.

(f) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Section, Rotorcraft Standards 
Branch, FAA, may approve AMOCs for this AD. Send your proposal to: 
Rao Edupuganti, Aviation Safety Engineer, Regulations and Policy 
Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., 
Fort Worth, TX 76177; telephone 817-222-5110; email [email protected].
    (2) For operations conducted under a 14 CFR part 119 operating 
certificate or under 14 CFR part 91, subpart K, the FAA suggests 
that you notify your principal inspector, or lacking a principal 
inspector, the manager of the local flight standards district office 
or certificate holding district office before

[[Page 34661]]

operating any aircraft complying with this AD through an AMOC.

(g) Additional Information

    The subject of this AD is addressed in European Aviation Safety 
Agency (now European Union Aviation Safety Agency) (EASA) AD No. 
2016-0255R1, dated January 17, 2017. You may view the EASA AD on the 
internet at https://www.regulations.gov in the AD Docket.

(h) Subject

    Joint Aircraft Service Component (JASC) Code: 6320, Rotor 
Drive--Gearbox.

    Issued on June 1, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-12155 Filed 6-5-20; 8:45 am]
 BILLING CODE 4910-13-P