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43909

Rules and Regulations
Federal Register Vol. 86, No. 152
Wednesday, August 11, 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. FAA20210652; Project Identifier MCAI202000271R; Amendment 3921683; AD 20211620
RIN 2120AA64

Airworthiness Directives; PZL Swidnik S.A. Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule; request for comments.
AGENCY:

Examining the AD Docket
The FAA is adopting a new airworthiness directive AD for certain PZL Swidnik S.A. Model PZL W3A
helicopters. This AD requires visually inspecting the bonding on a certain partnumbered fairing installed on a certain part-numbered vibration absorber, improving the bonding if necessary, using improved installation procedures to secure the fairing to the vibration absorber, and removing certain parts from service. This AD also prohibits installing the affected part unless it is inspected and installed per the AD
requirements. This AD was prompted by a report of a broken bolt securing the fairing to the vibration absorber that resulted from an incorrect torque value for the nut used to secure the fairing to the vibration absorber. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD becomes effective August 26, 2021. The FAA must receive comments on this AD by October 12, 2021.
SUMMARY:

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.
Fax: 202 4932251.

jbell on DSKJLSW7X2PROD with RULES

ADDRESSES:

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Mail: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 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 final rule, contact WSK PZLSwidnik S.A., Al. Lotnikow Polskich 1, 21045 Swidnik, Poland; telephone +48 81722 5716; fax +48 81722 5625;
email: PL-CustomerSupport.AW@
leonardocompany.com; or at https
www.pzlswidnik.pl/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.
You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210652; 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 AD, the 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:
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:

vibration absorber P/N 30.23.000.00.04.
EASA states further investigations identified that the maintenance instructions detailing how to secure the affected parts did not include the torque value information to tighten the castellated nut P/N 3336A6. EASA
further states that this condition, if not corrected, could lead to detachment of the affected part from the helicopter and its subsequent contact with helicopter stationary or rotary parts, possibly resulting in damage to, and consequent reduced control of, the helicopter.
Accordingly, EASA AD 20200038
requires the use of improved installation instructions to secure the affected fairing to the vibration absorber.
FAAs Determination 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 is issuing this AD after evaluating all known relevant information and determining that the unsafe condition described previously is likely to exist or develop on other helicopters of the same type design.

Background
Related Service Information RNIA
The FAA reviewed WYTWO
SPRZETU KOMUNIKACYJNEGO PZLSwidnik Spo5ka Akcyjna Alert Service Bulletin No. ASB3719307, dated January 27, 2020. This service information specifies checking inspecting the bonding between the fairing and vibration absorber star for any nonconformity and improving the bonding if necessary. This service information also specifies the specific torque to be used to tighten the castellated nuts during installation of the fairing onto the vibration absorber.

EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20200038, dated February 27, 2020 EASA AD
20200038, to correct an unsafe condition for all serial-numbered Wytwornia Sprzetu Komunikacyjnego WSK PZL-Swidnik Spo5ka Akcyjna S.A. Model PZL W3A and PZL W
3AS helicopters. EASA AD 20200038
advises that a bolt part number P/N
3003A6163 was found broken on fairing P/N 30.23.015.00.03 installed on
AD Requirements This AD requires, within 300 hours time-in-service after the effective date of this AD, removing from service each bolt P/N 3003A6163, washer P/N
3402A1, and castellated nut P/N
3336A6 that secure fairing P/N
30.23.015.00.03 to vibration absorber P/
N 30.23.000.00.04, and inspecting the bonding between the fairing and vibration absorber to determine if there is any anodic coating. If there is anodic coating, this AD requires polishing the
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