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Rules and Regulations
Federal Register Vol. 86, No. 159
Friday, August 20, 2021

This section of the FEDERAL REGISTER
contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210455; Project Identifier 2018SW031AD; Amendment 3921699; AD 20211716
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 fatigue testing and analyses. This AD
requires establishing a life limit for a certain part-numbered tail gearbox fitting. The FAA is issuing this AD to address the unsafe condition on these products.

SUMMARY:

This AD is effective September 24, 2021.
ADDRESSES: For 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 +39
0331225074; fax +390331229046; or at https www.leonardocompany.com/
en/home. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.
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DATES:

Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210455; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal
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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 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 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 June 10, 2021 86 FR 30822. In the NPRM, the FAA proposed to require determining the total hours time-inservice TIS and total number of landings of tail gearbox fitting part number P/N 4F5350A04152. If the total hours TIS and total number of landings cannot be determined, the NPRM would require removing the part from service. Also, the NPRM would establish a life limit for tail gearbox fitting P/N 4F5350A04152 and require removing the part from service according to the new life limit. The NPRM was prompted by EASA AD
20180087, dated April 18, 2018 EASA
AD 20180087, issued by EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for Leonardo S.p.A.
Helicopters formerly Finmeccanica S.p.A., AgustaWestland S.p.A. Model AW189 helicopters. EASA advises of revisions resulting in Leonardo AW189
Maintenance Manual, Document 89A
AMPI00P, Chapter IV, Airworthiness Limitations, Issue 13 89AAMPI00
P ALS Issue 13, which includes new and/or more restrictive airworthiness limitations and maintenance tasks since its original issuance. Failure to accomplish those airworthiness limitations and maintenance tasks could result in an unsafe condition. This
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condition, if not addressed, could result in failure of a part, which could result in loss of control of the helicopter.
Accordingly, EASA AD 20180087
requires accomplishing the actions specified in 89AAMPI00P ALS
Issue 13 and revising the Aircraft Maintenance Program AMP with the actions specified in 89AAMPI00P
ALS Issue 13.
Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these helicopters. This AD
is adopted as proposed in the NPRM.
Related Service Information The FAA reviewed AW189 Air Vehicle Maintenance Planning Information, 89BAMPI00P, Chapter 4, Issue 6, dated July 17, 2018 89B
AMPI00P ALS Issue 6. 89BAMPI
00P ALS Issue 6 specifies various airworthiness limitations information including retirement lives, mandatory inspections, and certification maintenance requirements. 89B
AMPI00P ALS Issue 6 is equivalent to 89AAMPI00P ALS Issue 13.
Differences Between This AD and the EASA AD
EASA AD 20180087 applies to Model AW189 helicopters, whereas this AD applies to that model helicopter with tail gearbox fitting P/N
4F5350A04152 installed instead. EASA
AD 20180087 requires accomplishing the actions specified in 89AAMPI
00P ALS Issue 13 and revising the AMP with the actions specified in 89
AAMPI00P ALS Issue 13, whereas this AD requires establishing a life limit for tail gearbox fitting P/N

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