46766 Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations 

Issued on August 12, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–17974 Filed 8–18–21; 11:15 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0686; Project 

Identifier MCAI–2021–00687–R; Amendment 

39–21701; AD 2021–17–18] 

RIN 2120–AA64 

Airworthiness Directives; Leonardo 

S.p.a. Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Leonardo S.p.a. Model A109C, A109K2, 

A109E, A109S, and AW109SP 

helicopters. This AD was prompted by 

a report of a crack on the tail rotor (TR) 

mast. This AD requires an inspection of 

certain TR sleeve assemblies for 

discrepancies, an inspection of certain 

TR shaft assemblies for discrepancies, a 

repetitive measurement of the position 

of the bushing of the TR sleeve assembly 

in relation to the pitch change slider 

assembly, and corrective actions 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: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 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 

6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call 817–222–5110. 

It is also available in the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0686. 

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. FAA–2021– 

0686; 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 

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: 

Andrea Jimenez, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; phone: (516) 228–7330; email: 

andrea.jimenez@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2021–0144, dated June 17, 2021 (EASA 

AD 2021–0144) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or the MCAI), to correct an 

unsafe condition for all Leonardo S.p.a. 

Model A109C, A109K2, A109E, A109S, 

and AW109SP helicopters. 

This AD was prompted by a report of 

a crack on the TR mast. The FAA is 

issuing this AD to address cracking on 

the TR mast, which could lead to failure 

of the TR mast, with consequent loss of 

control of the helicopter. See the MCAI 

for additional background information. 

Related IBR Material Under 1 CFR Part 

51 

EASA AD 2021–0144 specifies 

procedures for an inspection of certain 

TR sleeve assemblies for discrepancies; 

an inspection of certain TR shaft 

assemblies for abnormal wear condition, 

corrosion, fretting, crack, and damage; a 

repetitive measurement of the position 

of the bushing of the TR sleeve assembly 

in relation to the pitch change slider 

assembly for any dimensional change; a 

repetitive inspection of a certain 

inspection area of the TR gearbox for 

discrepancies; and corrective actions. 

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. 

FAA’s Determination 

These products have been approved 

by the aviation authority of another 

country, and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the State 

of Design Authority, the FAA has been 

notified of the unsafe condition 

described in the MCAI referenced 

above. The FAA is issuing this AD after 

evaluating all pertinent information and 

determining that the unsafe condition 

exists and is likely to exist or develop 

on other products of the same type 

design. 

Requirements of This AD 

This AD requires accomplishing the 

actions specified in EASA AD 2021– 

0144, described previously, as 

incorporated by reference, except for 

any differences identified as exceptions 

in the regulatory text of this AD and 

except as discussed under ‘‘Differences 

Between this AD and the MCAI.’’ 

Explanation of Required Compliance 

Information 

In the FAA’s ongoing efforts to 

improve the efficiency of the AD 

process, the FAA initially worked with 

Airbus and EASA to develop a process 

to use certain 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– 

0144 is incorporated by reference in this 

FAA final rule. This AD, therefore, 

requires compliance with EASA AD 

2021–0144 in its entirety, through that 

incorporation, except for any differences 

identified as exceptions 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 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations 46767 

this AD requirement is not limited to 

the section titled ‘‘Required Action(s) 

and Compliance Time(s)’’ in the EASA 

AD. Service information specified in 

EASA AD 2021–0144 that is required for 

compliance with EASA AD 2021–0144 

is available on the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0686. 

Differences Between This AD and the 

MCAI 

Paragraph (1) of EASA AD 2021–0144 

specifies the inspection must be done 

within 25 flight hours or 3 months, 

whichever occurs first. However, this 

AD requires the inspection to be done 

within 25 hours time-in-service after the 

effective date of this AD. 

Paragraphs (5) and (9) of EASA AD 

2021–0144 require a repetitive 

inspection and corrective actions. The 

FAA is considering requiring these 

actions. However, the planned 

compliance time would allow enough 

time to provide notice and opportunity 

for prior public comment on the merits 

of those actions. 

Interim Action 

The FAA considers this AD interim 

action. The inspection reports that are 

required by this AD will enable the 

manufacturer to obtain better insight 

into the nature, cause, and extent of the 

cracking, and eventually to develop 

final action to address the unsafe 

condition. Once final action has been 

identified, the FAA might consider 

further rulemaking. Additionally, the 

FAA is considering further rulemaking 

to require the repetitive inspections and 

corrective actions specified in 

paragraphs (5) and (9) of EASA AD 

2021–0144. 

FAA’s Justification and Determination 

of the Effective Date 

Section 553(b)(3)(B) of the 

Administrative Procedure Act (APA) (5 

U.S.C. 551 et seq.) authorizes agencies 

to dispense with notice and comment 

procedures for rules when the agency, 

for ‘‘good cause’’ finds that those 

procedures are ‘‘impracticable, 

unnecessary, or contrary to the public 

interest.’’ Under this section, an agency, 

upon finding good cause, may issue a 

final rule without seeking comment 

prior to issuance. Further, section 

553(d) of the APA authorizes agencies to 

make rules effective in less than thirty 

days, upon a finding of good cause. 

An unsafe condition exists that 

requires the immediate adoption of this 

AD without providing an opportunity 

for public comments prior to adoption. 

The FAA has found that the risk to the 

flying public justifies foregoing notice 

and comment prior to adoption of this 

rule because cracking on the TR mast 

could lead to failure of the TR mast, 

with consequent loss of control of the 

helicopter. Additionally, based on the 

average flight-hour utilization rates of 

these helicopters, the initial inspections 

must be completed within about 2 

months. Accordingly, the compliance 

time for the required action is shorter 

than the time necessary for the public to 

comment and for publication of the final 

rule. Therefore, notice and opportunity 

for prior public comment are 

impracticable and contrary to the public 

interest pursuant to 5 U.S.C. 

553(b)(3)(B). In addition, the FAA finds 

that good cause exists pursuant to 5 

U.S.C. 553(d) for making this 

amendment effective in less than 30 

days, for the same reasons the FAA 

found good cause to forego notice and 

comment. 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this AD. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘Docket No. FAA– 

2021–0686; Project Identifier MCAI– 

2021–00687–R’’ at the beginning of your 

comments. The most helpful comments 

reference a specific portion of the AD, 

explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this AD because of 

those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this AD. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this AD contain 

commercial or financial information 

that is customarily treated as private, 

that you actually treat as private, and 

that is relevant or responsive to this AD, 

it is important that you clearly designate 

the submitted comments as CBI. Please 

mark each page of your submission 

containing CBI as ‘‘PROPIN.’’ The FAA 

will treat such marked submissions as 

confidential under the FOIA, and they 

will not be placed in the public docket 

of this AD. Submissions containing CBI 

should be sent to Andrea Jimenez, 

Aerospace Engineer, COS Program 

Management Section, Operational 

Safety Branch, FAA, 1600 Stewart Ave., 

Suite 410, Westbury, NY 11590; phone: 

(516) 228–7330; email: andrea.jimenez@

faa.gov. Any commentary that the FAA 

receives that is not specifically 

designated as CBI will be placed in the 

public docket for this rulemaking. 

Regulatory Flexibility Act (RFA) 

The requirements of the RFA do not 

apply when an agency finds good cause 

pursuant to 5 U.S.C. 553 to adopt a rule 

without prior notice and comment. 

Because the FAA has determined that it 

has good cause to adopt this rule 

without notice and comment, RFA 

analysis is not required. 

Costs of Compliance 

The FAA estimates that this AD 

affects 133 helicopters of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Action Labor cost Parts 

cost Cost per product Cost on U.S. operators 

Inspections/Measurements.Up to 6 work-hours × $85 per hour = $510 per 

inspection/measurement cycle.

$0 Up to $510 per inspection/measurement 

cycle.

Up to $67,830 per inspection/measurement cycle. 

The FAA estimates the following 

costs to do any necessary on-condition 

actions (replacements, repairs, and 

reporting) that would be required based 

on the results of any required actions. 

The FAA has no way of determining the 


khammond on DSKJM1Z7X2PROD with RULES
46768 Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations 

number of helicopters that might need 

these on-condition actions: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS * 

Action Labor cost Parts cost Cost per 

product 

Replacements .................................. 19 work-hours × $85 per hour = $1,615 ................................................... $88,760 $90,375 

Reporting ......................................... 1 work-hour × $85 per hour = $85 ............................................................ 0 85 

* The FAA has received no definitive data on which to base the cost estimates for the on-condition repairs specified in this AD.

According to the manufacturer, some 

or all of the costs of this AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

individuals. The FAA does not control 

warranty coverage for affected 

individuals. As a result, the FAA has 

included all known costs in the cost 

estimate. 

Paperwork Reduction Act 

A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject 

to penalty for failure to comply with a 

collection of information subject to the 

requirements of the Paperwork 

Reduction Act unless that collection of 

information displays a current valid 

OMB control number. The control 

number for the collection of information 

required by this AD is 2120–0056. The 

paperwork cost associated with this AD 

has been detailed in the Costs of 

Compliance section of this document 

and includes time for reviewing 

instructions, as well as completing and 

reviewing the collection of information. 

Therefore, all reporting associated with 

this AD is mandatory. Comments 

concerning the accuracy of this burden 

and suggestions for reducing the burden 

should be directed to Information 

Collection Clearance Officer, Federal 

Aviation Administration, 10101 

Hillwood Pkwy., Fort Worth, TX 76177– 

1524. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s 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 Agency’s 

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 

The FAA determined that 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 above, I 

certify this regulation: 

(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 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2021–17–18 Leonardo S.p.a.: Amendment 

39–21701; Docket No. FAA–2021–0686; 

Project Identifier MCAI–2021–00687–R. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective September 7, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Leonardo S.p.a. Model 

A109C, A109K2, A109E, A109S, and 

AW109SP helicopters, certificated in any 

category, all serial numbers. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 6400, Tail Rotor System. 

(e) Unsafe Condition 

This AD was prompted by a report of a 

crack on the tail rotor (TR) mast. The FAA 

is issuing this AD to address cracking on the 

TR mast, which could lead to failure of the 

TR mast, with consequent loss of control of 

the helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2021–0144, dated 

June 17, 2021 (EASA AD 2021–0144). 

(h) Exceptions to EASA AD 2021–0144 

(1) Where EASA AD 2021–0144 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(2) The ‘‘Remarks’’ section of EASA AD 

2021–0144 does not apply to this AD. 

(3) Where EASA AD 2021–0144 refers to 

flight hours (FH), this AD requires using 

hours time-in-service. 

(4) Where paragraph (1) of EASA AD 2021– 

0144 specifies a compliance time of 25 FH or 

3 months, whichever occurs first, this AD 

requires compliance within 25 hours time-inservice after the effective date of this AD. 

(5) Where Note 1 of EASA AD 2021–0144 

specifies a tolerance of 30 FH, this AD does 

not allow a tolerance. 

(6) Where paragraph (6) of EASA AD 2021– 

0144 states the term ‘‘discrepancies,’’ for the 

purposes of this AD discrepancies include 

dents, corrosion, elongation, scratches, wear, 

excessive wear (web visible), fretting, or 

stepping. 

(7) Where paragraph (7) of EASA AD 2021– 

0144 states the term ‘‘discrepancies,’’ for the 

purposes of this AD discrepancies include 

abnormal wear condition, corrosion, fretting, 

crack, or damage (including dents, 

elongation, scratches, or stepping). 

(8) Paragraphs (5) and (9) of EASA AD 

2021–0144 do not apply to this AD. 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations 46769 

(9) Where EASA AD 2021–0144 defines 

‘‘serviceable part,’’ and that definition 

specifies instructions that are ‘‘approved 

under Leonardo Design Organization 

Approval (DOA) or by EASA,’’ for this AD, 

the repair must be accomplished using a 

method approved by the Manager, General 

Aviation and Rotorcraft Section, 

International Validation Branch, FAA; or 

EASA; or Leonardo S.p.a.’s EASA DOA. If 

approved by the DOA, the approval must 

include the DOA-authorized signature. 

(10) Where Note 2, and paragraph (7) of 

EASA AD 2021–0144 specify instructions 

that are ‘‘approved under Leonardo DOA or 

by EASA,’’ for this AD, the repair must be 

accomplished using a method approved by 

the Manager, General Aviation and Rotorcraft 

Section, International Validation Branch, 

FAA; or EASA; or Leonardo S.p.a.’s EASA 

DOA. If approved by the DOA, the approval 

must include the DOA-authorized signature. 

(11) Where the service information 

referenced in EASA AD 2021–0144 specifies 

to contact the manufacturer for corrective 

action, this AD requires the repair to be done 

in accordance with a method approved by 

the Manager, General Aviation and Rotorcraft 

Section, International Validation Branch, 

FAA; or EASA; or Leonardo S.p.a.’s EASA 

DOA. If approved by the DOA, the approval 

must include the DOA-authorized signature. 

(12) Where the service information 

referenced in EASA AD 2021–0144 specifies 

to discard a certain part, this AD requires 

removing that part from service. 

(i) Special Flight Permit 

Special flight permits may be issued in 

accordance with 14 CFR 21.197 and 21.199 

to operate the helicopter to a location where 

the actions of this AD can be performed, 

provided no passengers are onboard. 

(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 

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 (k) 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 

For more information about this AD, 

contact Andrea Jimenez, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; phone: (516) 228–7330; email: 

andrea.jimenez@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2021–0144, dated June 17, 2021. 

(ii) [Reserved] 

(3) For EASA AD 2021–0144, 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 

EASA AD on the EASA website at https://

ad.easa.europa.eu. 

(4) You may view this service information 

at the FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood Pkwy., 

Room 6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call 817–222–5110. This 

material may be found in the AD docket on 

the internet at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0686. 

(5) You may view this material 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/ibrlocations.html. 

Issued on August 13, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–17976 Filed 8–18–21; 11:15 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0683; Project 

Identifier MCAI–2020–00614–R; Amendment 

39–21696; AD 2021–17–13] 

RIN 2120–AA64 

Airworthiness Directives; PZL Swidnik 

S.A. Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

PZL Swidnik S.A. Model PZL W–3A 

helicopters. This AD was prompted by 

a report of a damaged wheel braking 

system pneumatic line fitting installed 

on the left-hand (LH) main landing gear 

(MLG) leg. This AD requires modifying 

the LH MLG leg. The FAA is issuing this 

AD to address the unsafe condition on 

these products. 

DATES: This AD becomes effective 

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: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 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 ‘‘PZLS ́ widnik’’ S.A., Al. Lotniko ́w Polskich 1, 

21–045 S ́ widnik, 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 6N–321, Fort Worth, TX 

76177. For information on the 

availability of this material at the FAA, 

call (817) 222–5110. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0683; 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, 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 listed above. 

FOR FURTHER INFORMATION CONTACT: Fred 

Guerin, Aerospace Engineer, General 

Aviation & Rotorcraft Section, 

International Validation Branch, FAA, 

2200 S 216th St, Des Moines, WA 

98198; telephone (202) 267–7457; email 

fred.guerin@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA AD 2018–0274, 

dated December 13, 2018 (EASA AD 

2018–0274), to correct an unsafe 

condition for Wytwo ́rnia Sprze ̨tu 

Komunikacyjnego (WSK) ‘‘PZLVerDate Sep<11>2014 16:42 Aug 19, 2021 Jkt 253001 PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 E:\FR\FM\20AUR1.SGM 20AUR1

khammond on DSKJM1Z7X2PROD with RULES