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Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations prompted by a report of un-commanded activation of the rotor brake system before take-off due to a jammed rotor brake control cable and subsequent partially open brake control valve. This AD requires repetitive inspections of the rotor brake control cable and replacement of the rotor brake control cable, if necessary, as specified in a 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 becomes effective September 7, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of September 7, 2021.
The FAA must receive comments on this AD by October 4, 2021.
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.
Fax: 2024932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, 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 material incorporated by reference IBR in this AD, contact the EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; phone: +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. 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 availability of this material at the FAA, call 8172225110.
It is also available in the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0672.

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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. FAA2021
0672; 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, any
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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:
Darren Gassetto, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
11590; phone: 516 2287323; email:
Darren.Gassetto@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20210067, dated March 9, 2021 EASA AD 2021
0067, to correct an unsafe condition on Leonardo S.p.a. formerly Finmeccanica S.p.A., AgustaWestland S.p.A., Agusta S.p.A., Costruzioni Aeronautiche Giovanni Agusta Model A109A, A109AII, A109C, A109E, A109K2, A109S, and AW109SP helicopters with a certain rotor brake kit installed.
EASA AD 20210067 was prompted by a report of un-commanded activation of the rotor brake system before take-off due to a jammed rotor brake control cable and subsequent partially open brake control valve. This resulted in hydraulic pressure delivered to the rotor brake, even with the rotor brake lever in the OFF position. To address this condition, EASA AD 20210067
requires repetitive inspections of the rotor brake control cable and replacement, if necessary. The FAA is issuing this AD to address uncommanded activation of the rotor brake system, which could lead to failure of the rotor brake system with consequent damage to surrounding critical equipment, resulting in loss of control of the helicopter.
Related IBR Material Under 1 CFR Part 51
EASA AD 20210067 specifies, within 50 hours and thereafter at intervals not to exceed 100 hours, repetitively inspecting the rotor brake control cable and replacing the control cable if the cylindrical nipple does not rotate freely, if the control cable jams when running inside the sheath, or if there is any damage or wear. EASA AD
20210067 also prohibits installing an affected rotor brake control cable on any helicopter unless it first passes the required inspection and requires reporting information to the manufacturer. This material is reasonably available because the interested parties have access to it through their normal course of business
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or by the means identified in the ADDRESSES section.
FAAs Determination These products 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 of the unsafe condition described in its AD. The FAA is issuing this AD
after determining that the unsafe condition described previously is likely to exist or develop on other products of these same type designs.
Requirements of This AD
This AD requires accomplishing the actions specified in EASA AD 2021
0067, described previously, as incorporated by reference, except for any differences identified in the regulatory text of this AD.
Explanation of Required Compliance Information In the FAAs ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a process to use some EASA ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. The FAA has since coordinated with other manufacturers and civil aviation authorities to use this process. As a result, EASA AD 2021
0067 is incorporated by reference in this FAA final rule. This AD would, therefore, require compliance with EASA AD 20210067 in its entirety, through that incorporation, except for any differences identified in the regulatory text of this AD. Using common terms that are the same as the heading of a particular section in the EASA AD does not mean that operators need comply only with that section. For example, where the AD requirement refers to all required actions and compliance times, compliance with this AD requirement is not limited to the section titled Required Actions and Compliance Times in the EASA
AD. Service information required by EASA AD 20210067 for compliance is available on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0672.
FAAs Justification and Determination of the Effective Date Section 553b3B of the Administrative Procedure Act 5 U.S.C.
authorizes agencies to dispense with notice and comment procedures for rules when the agency, for good cause finds that those procedures are
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