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Federal Register / Vol. 86, No. 171 / Wednesday, September 8, 2021 / Rules and Regulations DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210383; Project Identifier 2018SW005AD; Amendment 3921671; AD 20211609

Examining the AD Docket
RIN 2120AA64

Airworthiness Directives; Leonardo S.p.a. Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Leonardo S.p.a. Model AW189
helicopters. This AD was prompted by corrosion on the inlet check valve banjo fitting of emergency flotation system EFS float assemblies. This AD requires visually inspecting each banjo fitting installed on an affected EFS float assembly, and depending on the results, removing the banjo fitting from service.
This AD also requires applying corrosion inhibiting compound and prohibits installing an affected EFS float assembly unless certain requirements have been accomplished as specified in a European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective October 13, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of October 13, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49
221 8999 000; email ADs@
easa.europa.eu; internet www.easa.europa.eu. You may find this material on the EASA website at https
ad.easa.europa.eu. For Aero Sekur and Leonardo Helicopters service information identified in this final rule, contact Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate Va Italy;
telephone +390331225074; fax +39
0331229046; or at https
customerportal.leonardocompany.com/
en-US/. You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX
76177. For information on the
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SUMMARY:

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availability of this material at the FAA, call 817 2225110. It is also available in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0383.
You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210383; 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 W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Kristi Bradley, Program Manager, COS
Program Management Section, Operational Safety Branch, Compliance & Airworthiness Division, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177;
telephone 817 2225110; email kristin.bradley@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued a series of ADs, the most recent being EASA AD 20180006, dated January 10, 2018 EASA AD
20180006, to correct an unsafe condition for Leonardo S.p.A.
Helicopters formerly Finmeccanica S.p.A., AgustaWestland S.p.A. Model AW189 helicopters with certain partnumbered and serial-numbered Aero Sekur EFS float assemblies installed, except those float assemblies marked with SB18925004. EASA initially issued EASA AD 20170256, dated December 22, 2017 EASA AD 2017
0256, to address the unsafe condition.
EASA issued EASA AD 20180006 to supersede EASA AD 20170256 to revise the compliance time based on the EFS float assembly condition.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Leonardo S.p.a. Model AW189 helicopters. The NPRM
published in the Federal Register on May 28, 2021 86 FR 28714. The NPRM
was prompted by corrosion on the inlet check valve banjo fitting of EFS float assemblies. The NPRM proposed to require visually inspecting each banjo fitting installed on an affected EFS float assembly, and depending on the results, removing the banjo fitting from service.

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The NPRM also proposed to require applying corrosion inhibiting compound to each banjo fitting installed on an affected EFS float assembly and prohibit installing an affected EFS float assembly unless the banjo fitting inspection, banjo fitting replacement, and corrosion inhibiting compound application requirements have been accomplished, as specified in an EASA
AD.
The FAA is issuing this AD to prevent reduced inflation of an EFS float. The unsafe condition, if not addressed, could affect the helicopters buoyancy during an emergency landing on water.
See EASA AD 20180006 for additional background information.
Discussion of Final Airworthiness Directive 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.
Related Service Information Under 1
CFR Part 51
EASA AD 20180006 requires visually inspecting the banjo fittings installed on an affected EFS float assembly. If there is corrosion on a banjo fitting, EASA AD 20180006
requires replacing the banjo fitting.
EASA AD 20180006 also requires applying corrosion inhibiting compound to each banjo fitting installed on an affected EFS float assembly.
EASA AD 20180006 prohibits installing an affected EFS float assembly unless the banjo fitting inspection, banjo fitting replacement, and corrosion inhibiting compound application requirements have been accomplished.
EASA AD 20180006 also allows credit for actions accomplished previously with a prior revision of the Leonardo Helicopters service information.
This material 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 reviewed Leonardo Helicopters Alert Service Bulletin No.
189174, original issue, dated December 22, 2017 ASB 189174 original issue, and Revision A, dated January 5, 2018
ASB 189174 Rev A. The FAA also
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