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.

Rules and Regulations Federal Register

34125 

Vol. 86, No. 122 

Tuesday, June 29, 2021 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket No. USCG–2021–0193] 

Safety Zone; Marine Events Within the 

Eighth Coast Guard District 

AGENCY: Coast Guard, Department of 

Homeland Security (DHS). 

ACTION: Notice of enforcement of 

regulation. 

SUMMARY: The Coast Guard will enforce 

a safety zone for the St. John the Baptist 

Independence Day Fireworks on July 1, 

2021 from 8:45 p.m. through 9:45 p.m. 

to provide for the safety of life on 

navigable waterways during this event. 

Our regulation for marine events within 

the Eighth Coast Guard District 

identifies the regulated area for this 

event on the Lower Mississippi River, 

by Reserve Louisiana. During the 

enforcement periods, the operator of any 

vessel in the regulated area must 

comply with directions from the Patrol 

Commander or any Official Patrol 

displaying a Coast Guard ensign. 

DATES: The regulations in 33 CFR 

165.801, Table 5, line 2, will be 

enforced from 8:45 p.m. though 9:45 

p.m. on July 1, 2021. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions about this notice of 

enforcement, call or email Lieutenant 

Commander Thao V. Nguyen, Vessel 

Traffic Service Lower Mississippi River 

Director, U.S. Coast Guard Sector New 

Orleans; (504) 365–2231, 

Thao.V.Nguyen@uscg.mil. 

SUPPLEMENTARY INFORMATION: The Coast 

Guard will enforce the safety zone 

located in 33 CFR 165.801, Table 5, line 

2, for the St. John the Baptist 

Independence Day Celebration event. 

The regulations will be enforced from 

8:45 p.m. through 9:45 p.m. on July 1, 

2021. This action is being taken to 

provide for the safety of life on these 

navigable waterways during this event. 

Our regulations for marine events 

within the Eighth Coast Guard District, 

33 CFR 165.801, as updated by the 

Federal Register document published at 

83 FR 55488, specifies the location of 

the regulated area on the Mississippi 

River between mile markers 137.5 and 

138.5 on the Mississippi River near 

Reserve, Louisiana. During the 

enforcement period, as reflected in 

§ 165.801(a) through (d), if you are the 

operator of a vessel in the safety zone, 

you must comply with directions from 

the Patrol Commander or any Official 

Patrol displaying a Coast Guard ensign. 

In addition to this notice of 

enforcement in the Federal Register, the 

Coast Guard plans to provide 

notification of this enforcement period 

via a Marine Safety Information Bulletin 

and/or Broadcast Notice to Mariners. 

Dated: June 24, 2021. 

W.E. Watson, 

Captain, U.S. Coast Guard, Captain of the 

Port Sector New Orleans. 

[FR Doc. 2021–13879 Filed 6–28–21; 8:45 am] 

BILLING CODE 9110–04–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0265; Project 

Identifier MCAI–2020–01541–R; Amendment 

39–21603; AD 2021–12–16] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Helicopters Deutschland GmbH (AHD) 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for Airbus 

Helicopters Deutschland GmbH (AHD) 

Model MBB–BK117 C–2 and MBB– 

BK117 D–2 helicopters. This AD was 

prompted by a report of increased 

control force in the collective axis. This 

AD requires repetitive visual 

inspections of the main rotor actuator 

(MRA), 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 is effective August 3, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of August 3, 2021. 

ADDRESSES: For material incorporated 

by reference (IBR) in this AD, contact 

the EASA, Konrad-Adenauer-Ufer 3, 

50668 Cologne, Germany; telephone +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–2021–0265. 

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– 

0265; 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, 

any comments received, and other 

information. The address for Docket 

Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Katherine Venegas, Aviation Safety 

Engineer, Los Angeles ACO Branch, 

FAA, 3960 Paramount Blvd., Lakewood, 

California 90712; telephone (562) 627– 

5353; email katherine.venegas@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2018–0283, dated December 20, 2018 

(EASA AD 2018–0283), to correct an 

unsafe condition for AHD Model MBB– 

BK117 C–2 and MBB–BK117 D–2 

helicopters. EASA later issued EASA 

AD 2020–0257, dated November 17, 


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34126 Federal Register / Vol. 86, No. 122 / Tuesday, June 29, 2021 / Rules and Regulations 

2020 (EASA AD 2020–0257), to 

supersede EASA AD 2018–0283. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to AHD Model MBB–BK117 C–2 

and MBB–BK117 D–2 helicopters. The 

NPRM published in the Federal 

Register on April 8, 2021 (86 FR 18221). 

The NPRM was prompted by a report of 

increased control force in the collective 

axis on an AHD Model EC135 

helicopter. Subsequent inspections 

determined that a nut on a piston of the 

MRA had cracked and separated from 

the piston rod. Due to design similarity, 

Model MBB–BK117 C–2 and MBB– 

BK117 D–2 helicopters are also affected 

by this unsafe condition. The NPRM 

proposed to require repetitive visual 

inspections of the MRA as specified in 

EASA AD 2020–0257. 

The FAA is issuing this AD to prevent 

failure of the MRA and subsequent loss 

of control of the helicopter. See the 

EASA AD for additional background 

information. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The FAA received no 

comments on the NPRM or on the 

determination of the cost to the public. 

Conclusion 

The FAA reviewed the relevant data 

and determined that air safety and the 

public interest require adopting this 

final rule as proposed, except the 

compliance time for the reporting 

requirement has changed from within 

30 days after the effective date of this 

AD to within 30 days after 

accomplishing each inspection and 

determining that there is a crack, 

damage, black coloration, or corrosion. 

The FAA has determined that this 

change: 

• Is consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Does not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

The FAA also determined that this 

change will not increase the economic 

burden on any operator or increase the 

scope of this final rule. 

Related Service Information Under 1 

CFR Part 51 

EASA AD 2020–0257 specifies 

procedures for a repetitive visual 

inspection of the MRA and depending 

on the results, replacing the affected 

parts. 

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. 

Differences Between This AD and the 

EASA AD 

The EASA AD requires contacting 

Airbus Helicopters or replacing an 

affected part, whereas this AD requires 

performing the corrective action in 

accordance with FAA-approved 

procedures or removing the affected 

parts from service instead. The service 

information referenced in the EASA AD 

refers to calendar time when specifying 

the compliance time for the inspections, 

whereas this AD uses hours time-inservice. The EASA AD allows a 

tolerance to the compliance times, 

whereas this AD does not. The EASA 

AD does not specify a compliance time 

for the reporting requirements; whereas 

this AD requires performing the 

reporting action within 30 days after 

accomplishing each inspection and 

determining that there is a crack, 

damage, black coloration, or corrosion. 

Interim Action 

The FAA considers this AD interim 

action. If final action is later identified, 

the FAA might consider further 

rulemaking then. 

Costs of Compliance 

The FAA estimates that this AD 

affects 216 helicopters of U.S. Registry. 

Labor rates are estimated at $85 per 

work-hour. Based on these numbers, the 

FAA estimates that operators may incur 

the following costs in order to comply 

with this AD. 

Inspecting the nuts on the MRA 

pistons takes about 1 work-hour for an 

estimated cost of $85 per helicopter and 

$18,360 for the U.S. fleet, per inspection 

cycle. 

Replacing the MRA takes about 7 

work-hours and parts cost about 

$286,554 for an estimated cost of 

$287,149 per helicopter. 

Repairing the MRA takes up to about 

8 work-hours and parts cost about $110 

for an estimated cost of up to $790 per 

MRA. 

If required, reporting information 

takes about 1 work-hour for an 

estimated cost of $85 per instance. 

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 

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 that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 


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Federal Register / Vol. 86, No. 122 / Tuesday, June 29, 2021 / Rules and Regulations 34127 

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: 

2021–12–16 Airbus Helicopters 

Deutschland GmbH (AHD): Amendment 

39–21603; Docket No. FAA–2021–0265; 

Project Identifier MCAI–2020–01541–R. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective August 3, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Airbus Helicopters 

Deutschland GmbH (AHD) Model MBB– 

BK117 C–2 and MBB–BK117 D–2 

helicopters, certificated in any category. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code: 6710, Main Rotor Control. 

(e) Reason 

This AD was prompted by a report of 

increased control force in the collective axis. 

The FAA is issuing this AD to prevent failure 

of the main rotor actuator and subsequent 

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 2020–0257, dated 

November 17, 2020 (EASA AD 2020–0257). 

(h) Exceptions to EASA AD 2020–0257 

(1) Where EASA AD 2020–0257 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(2) Where Note 1 of EASA AD 2020–0257 

specifies a tolerance of 3 months may be 

applied to the initial threshold and to the 

repetitive inspection interval, this AD does 

not allow this tolerance. 

(3) Where paragraph (2) of EASA AD 2020– 

0257 specifies contacting Airbus Helicopters, 

this AD requires performing the corrective 

action in accordance with FAA-approved 

procedures. 

(4) Where paragraph (3) of EASA AD 2020– 

0257 specifies an alternative method to 

comply with the requirements of paragraph 

(2) of EASA AD 2020–0257 by replacing an 

affected part, this AD requires removing an 

affected part from service as an alternative 

method. 

(5) Where paragraph (1) of EASA AD 2020– 

0257 specifies a compliance time for the 

initial inspection of ‘‘before an affected part 

exceeds 12 months since new, or since last 

overhaul, or within 3 months after the 

effective date of this AD, whichever occurs 

later’’ and repetitive inspections at intervals 

not to exceed 12 months, this AD requires a 

compliance time for the initial inspection of 

before an affected part exceeds 319 total 

hours time-in-service (TIS), or within 319 

hours TIS after the date of the last overhaul, 

or within 80 hours TIS after the effective date 

of this AD, whichever occurs later, and 

repetitive inspections at intervals not to 

exceed 319 hours TIS. 

(6) Although the service information 

referenced in EASA AD 2020–0257 does not 

specify a compliance time for the reporting 

requirement, this AD requires the reporting 

action to be performed within 30 days after 

accomplishing each inspection and 

determining that there is a crack, damage, 

black coloration, or corrosion. 

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

2020–0257 does not apply to this AD. 

(i) 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 (j) 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. 

(j) Related Information 

For more information about this AD, 

contact Katherine Venegas, Aviation Safety 

Engineer, Los Angeles ACO Branch, FAA, 

3960 Paramount Blvd., Lakewood, California 

90712; telephone (562) 627–5353; email 

katherine.venegas@faa.gov. 

(k) 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 2020–0257, dated November 17, 

2020. 

(ii) [Reserved] 

(3) For EASA AD 2020–0257, contact the 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +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–2021–0265. 

(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 fedreg.legal@

nara.gov, or go to https://www.archives.gov/ 

federal-register/cfr/ibr-locations.html. 

Issued on June 4, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–13710 Filed 6–28–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0304; Project 

Identifier 2017–SW–108–AD; Amendment 

39–21606; AD 2021–13–01] 

RIN 2120–AA64 

Airworthiness Directives; Leonardo 

S.p.a. (Type Certificates Previously 

Held by Agusta S.p.A. and 

AgustaWestland S.p.A.) Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for 

Leonardo S.p.a. (Type Certificate 

previously held by Agusta S.p.A.) 

Model AB139 and AW139 helicopters 

and Leonardo S.p.a. (Type Certificate 

previously held by AgustaWestland 

S.p.A.) Model AW189 helicopters. This 

AD was prompted by reports of missing 

lock wire and loose fasteners. This AD 

requires a one-time inspection of the 

main rotor (M/R) slip ring and 

depending on the outcome, removing 

the M/R slip ring from service, removing 

screws and washers from service, 


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