This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

36241 

Vol. 86, No. 129 

Friday, July 9, 2021 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0498; Project 

Identifier 2019–SW–072–AD] 

RIN 2120–AA64 

Airworthiness Directives; He ́licopte`res 

Guimbal Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

He ́licopte`res Guimbal Model Cabri G2 

helicopters with any metal bushing 

installed on the main rotor (M/R) 

swashplate guide bellcrank. This 

proposed AD was prompted by a report 

of cracks discovered on the M/R scissor 

link during scheduled maintenance on 

several helicopters. This proposed AD 

would require removing all metal 

bushings from service, visually 

inspecting the lug bore area and 

depending on the inspection results, 

removing certain parts from service and 

installing certain part-numbered plastic 

bushings. This proposed AD would also 

prohibit installing any metal bushing on 

any helicopter. The FAA is proposing 

this AD to address the unsafe condition 

on these products. 

DATES: The FAA must receive comments 

on this proposed AD by August 23, 

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 between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. 

For service information identified in 

this NPRM, contact He ́licopte`res 

Guimbal, Basile Ginel, 1070, rue du 

Lieutenant Parayre, Ae ́rodrome d’Aixen-Provence, 13290 Les Milles, France; 

telephone 33–04–42–39–10–88; email 

basile.ginel@guimbal.com; web https://

www.guimbal.com. 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–2021–0498; 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 

NPRM, 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: 

Andrea Jimenez, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance 

& Airworthiness Division, FAA, 1600 

Stewart Ave., Mail Stop: Room 410, 

Westbury, NY 11590; telephone (516) 

228–7330; email andrea.jimenez@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2021–0498; Project Identifier 

2019–SW–072–AD’’ at the beginning of 

your comments. The most helpful 

comments reference a specific portion of 

the proposal, 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 proposal 

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 NPRM. 

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 NPRM 

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 NPRM, 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 

NPRM. Submissions containing CBI 

should be sent to Andrea Jimenez, 

Aerospace Engineer, COS Program 

Management Section, Operational 

Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 

Stewart Ave., Westbury, NY 11590; 

telephone (516) 228–7330; email 

andrea.jimenez@faa.gov. Any 

commentary that the FAA receives 

which is not specifically designated as 

CBI will be placed in the public docket 

for this rulemaking. 

Background 

EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA AD 2019–0185, 

dated July 30, 2019 (EASA AD 2019– 

0185), to correct an unsafe condition for 

He ́licopte`res Guimbal Model Cabri G2 

helicopters. EASA advises that during 

scheduled maintenance on several 

helicopters, cracks were found on the 

M/R scissor link due to corrosion. EASA 

states this corrosion was caused by 

stress induced by the mounting of the 

metal bushing inside the lug hole. EASA 

further states metal bushings are also 

installed on the M/R swashplate guide 

bellcrank, where similar cracking may 

occur. This condition, if not addressed, 


jbell on DSKJLSW7X2PROD with PROPOSALS
36242 Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 

could result in failure of the M/R 

swashplate guide bellcrank and reduced 

control of the helicopter. Accordingly, 

EASA AD 2019–0185 requires replacing 

any part-numbered metal bushing with 

plastic bushing part number (P/N) 

HG22–1001. EASA AD 2019–0185 also 

prohibits installing any part-numbered 

metal bushing on the M/R swashplate 

guide bellcrank other than P/N HG22– 

1001 on any helicopter. 

FAA’s Determination 

These helicopters have been approved 

by EASA and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the 

European Union, EASA has notified the 

FAA about the unsafe condition 

described in its AD. The FAA is 

proposing 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 designs. 

Related Service Information 

The FAA reviewed Guimbal Service 

Bulletin SB 17–003, Revision D, dated 

August 27, 2019 (SB 17–003 Rev D). 

This service information specifies 

disconnecting the bellcrank installed on 

the swashplate guide by removing the 

bolts that connect the bellcrank to the 

swashplate guide, removing any existing 

bushings, and visually inspecting the 

lug bore area for corrosion or cracks. 

This service information also specifies if 

there is any corrosion or cracks, 

reporting the information to HG 

support, installing the new plastic 

bushings, reinstalling the bellcrank, 

applying a specified torque, and 

installing cotter pins. 

Other Related Service Information 

The FAA also reviewed Guimbal 

Service Bulletin SB 17–003, Revision C, 

dated July 12, 2019 (SB 17–003 Rev C). 

SB 17–003 Rev C specifies the same 

procedures as SB 17–003 Rev D, except 

SB 17–003 Rev D updates the reference 

to EASA AD 2019–0185. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require, 

within 50 hours time-in-service or 2 

months, whichever occurs first after the 

effective date of this AD, disconnecting 

the bellcrank from the swashplate guide, 

removing each bolt and using a certain 

tool, removing certain parts from 

service. This proposed AD would also 

require visually inspecting the lug bore 

area for corrosion and cracks and 

depending on the inspection results, 

removing certain parts from service, or 

repairing the area using an FAAapproved method, installing certain 

part-numbered plastic bushings, coating 

the area with a compound, reinstalling 

certain parts, applying a specified 

torque, and installing cotter pins. 

Differences Between This Proposed AD 

and the EASA AD 

EASA AD 2019–0185 applies to all 

Model Cabri G2 helicopters, whereas 

this proposed AD would only apply to 

Model Cabri G2 helicopters with any 

metal bushings installed and without 

HG modification 16–009. The service 

information required by the EASA AD 

requires contacting He ́licopte`res 

Guimbal for corrective actions when 

corrosion or cracks are found in the lug 

bore area whereas this AD requires 

removing the swashplate guide from 

service or repairing it using an FAAapproved method. 

Costs of Compliance 

The FAA estimates that this proposed 

AD would affect 32 helicopters of U.S. 

Registry. The FAA estimates that 

operators may incur the following costs 

in order to comply with this proposed 

AD. Labor costs are estimated at $85 per 

work-hour. 

Disconnecting the bellcrank, 

removing each metal bushing and 

visually inspecting for corrosion and 

cracks would take about 0.5 work-hours 

for an estimated cost of $43 per 

inspection cycle. 

Installing each plastic bushing, 

coating with compound, re-installing 

the bellcrank, and applying torque 

would take about 0.5 work-hours and 

parts would cost about $10 for an 

estimated cost of $53 per helicopter. 

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 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would 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 

this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 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: 

He ́licopte`res Guimbal: Docket No. FAA– 

2021–0498; Project Identifier 2019–SW– 

072–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by August 23, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to He ́licopte`res Guimbal 

(HG) Model Cabri G2 helicopters, certificated 

in any category, with any metal bushings 

installed on the main rotor (M/R) swashplate 

guide bellcrank and without plastic bushing 

part number HG22–1001 or HG modification 

16–009. 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Code: 6700, Rotorcraft Flight Control. 


jbell on DSKJLSW7X2PROD with PROPOSALS
Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 36243 

(e) Unsafe Condition 

This AD was prompted by a report of 

cracks on the M/R scissor link. The FAA is 

issuing this AD to replace the metal bushings 

installed on the M/R swashplate guide 

bellcrank with plastic bushings. The unsafe 

condition, if not addressed, could result in 

failure of the M/R swashplate guide bellcrank 

and reduced control of the helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) Within 50 hours time-in-service (TIS) or 

2 months, whichever occurs first after the 

effective date of this AD: 

(i) Disconnect the bellcrank from the 

swashplate guide by removing each bolt and, 

ensuring that the bellcrank remains attached 

to the flight control rod, remove each metal 

bushing from service using a bushing 

disassembly tool. 

(ii) Visually inspect the lug bore area for 

any corrosion and any cracks. If there is any 

corrosion or any cracks, before further flight, 

remove the swashplate guide from service or 

repair it using an FAA-approved method. If 

there is no corrosion and no cracks, install 

plastic bushing part number HG22–1001, 

coat plastic bushing with isolation 

compound, re-install the bellcrank, torque 

each bolt to 7.5 Nm–9 Nm (5.5 ft-lbs–6.6 ftlbs), and install cotter pins. 

(2) As of the effective date of this AD, do 

not install any metal bushing on any 

helicopter. 

(h) 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 (i)(1) 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. 

(i) 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., Westbury, NY 11590; telephone (516) 

228–7330; email andrea.jimenez@faa.gov. 

(2) Guimbal Service Bulletin SB 17–003, 

Revision C, dated July 12, 2019, which is not 

incorporated by reference, contains 

additional information about the subject of 

this AD. For service information identified in 

this AD, contact He ́licopte`res Guimbal, Basile 

Ginel, 1070, rue du Lieutenant Parayre, 

Ae ́rodrome d’Aix-en-Provence, 13290 Les 

Milles, France; telephone 33–04–42–39–10– 

88; email basile.ginel@guimbal.com; web 

https://www.guimbal.com. You may view 

this referenced 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. 

(3) The subject of this AD is addressed in 

European Union Aviation Safety Agency 

(EASA) AD 2019–0185, dated July 30, 2019. 

You may view the EASA AD on the internet 

at https://www.regulations.gov in Docket No. 

FAA–2021–0498. 

Issued on June 10, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–14495 Filed 7–8–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0560; Project 

Identifier MCAI–2021–00192–T] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Bombardier, Inc., Model BD– 

700–1A10 and BD–700–1A11 airplanes. 

This proposed AD was prompted by 

reports that the sliding bushings in the 

forward engine mount system were 

missing. This proposed AD would 

require an inspection (gap check) of the 

front and aft engine mounts to verify the 

proper installation of the sliding 

bushings, and repair if necessary. The 

FAA is proposing this AD to address the 

unsafe condition on these products. 

DATES: The FAA must receive comments 

on this proposed AD by August 23, 

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 NPRM, contact Bombardier, Inc., 

400 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; telephone 

514–855–5000; fax 514–855–7401; email 

thd.crj@aero.bombardier.com; internet 

https://www.bombardier.com. You may 

view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 

216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0560; 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 

NPRM, any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Siddeeq Bacchus, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7362; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2021–0560; Project Identifier 

MCAI–2021–00192–T’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, 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 the proposal 

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 NPRM. 


jbell on DSKJLSW7X2PROD with PROPOSALS