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Federal Register / Vol. 86, No. 184 / Monday, September 27, 2021 / Rules and Regulations 20211815 PZL Swidnik S.A.:
Amendment 3921716; Docket No.
FAA20210723; Project Identifier MCAI202000268R.

with this type certificate on the U.S.
Registry.
Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs 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 Agencys 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 This AD will not have federalism implications under Executive Order 13132. This AD will 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 that this AD:
1 Is not a significant regulatory action under Executive Order 12866, and 2 Will not affect intrastate aviation in Alaska.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

lotter on DSK11XQN23PROD with RULES1

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

VerDate Sep<11>2014

16:20 Sep 24, 2021

Jkt 253001

a Effective Date This airworthiness directive AD is effective October 12, 2021.
b Affected ADs None.
c Applicability This AD applies to PZL Swidnik S.A.
Model PZL W3A helicopters, certificated in any category, with movable assemblies of main rotor MR blade droop stop, part number P/N 37.21.800.00.00, installed.
d Subject Joint Aircraft Service Component JASC
Code: 6200, Main Rotor System.
e Unsafe Condition This AD was prompted by a report that displaced teeth were detected on the moveable assemblies of an MR blade droop stop. The FAA is issuing this AD to address displaced teeth on the moveable assemblies of the MR blade droop stop. The unsafe condition, if not addressed, could result in erroneous operation of MR blade droop stop teeth during engine start-up or shut-down, or dynamic drop-down of an MR blade, resulting in contact of the affected MR blade with the tail boom, and possibly resulting in injury of occupants or persons on the ground.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions Within 30 days after the effective date of this AD, remove from service each moveable assembly of MR blade droop stop P/N
37.21.800.00.00 from all MR hub arms, in RNIA
accordance with Chapter II of WYTWO
SPRZETU KOMUNIKACYJNEGO PZL
Swidnik Spo5ka Akcyjna Mandatory Bulletin No. BO3718302, Revision 1, dated July 11, 2019.
h Part Installation Prohibition As of the effective date of this AD, no person may install on any helicopter an MR
blade droop stop, P/N 37.21.800.00.00, and do not install on any helicopter any movable assembly of an MR blade droop stop, P/N
37.21.800.00.00.
i Credit for Previous Actions This paragraph provides credit for actions required by paragraph g of this AD, if those actions were performed before the effective RNIA
date of this AD using WYTWO
SPRZETU KOMUNIKACYJNEGO PZLSwidnik Spo5ka Akcyjna Mandatory Bulletin No. BO3718302, dated June 19, 2019.
j Alternative Methods of Compliance AMOCs 1 The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the
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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 manager of the International Validation Branch, send it to the attention of the person identified in paragraph k1 of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov.
2 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.
k Related Information 1 For more information about this AD, contact Andrea Jimenez, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY 11590;
telephone 516 2287330; email andrea.jimenez@faa.gov.
2 Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs l3 and 4 of this AD.
3 The subject of this AD is addressed in European Union Aviation Safety Agency EASA AD 20190202, dated August 19, 2019. You may view the EASA AD at https
www.regulations.gov in Docket No. FAA
20210723.
l Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.
2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
RNIA SPRZETU
i WYTWO
KOMUNIKACYJNEGO PZL-Swidnik Spo5ka Akcyjna Mandatory Bulletin No. BO
3718302, Revision 1, dated July 11, 2019.
ii Reserved 3 For service information identified in this AD, contact WSK PZLSwidnik S.A., Al. Lotnikow Polskich 1, 21045 Swidnik, Poland; telephone +48 81722 5716; fax +48 81722 5625; email: PLCustomerSupport.AW@
leonardocompany.com; or at https
www.pzlswidnik.pl/en/home.
4 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.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.

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