Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 10753 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of 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: 

2021–02–15 The Boeing Company: 

Amendment 39–21398; Docket No. 

FAA–2020–0211; Product Identifier 

2020–NM–006–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 30, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 747–100, 747–100B, 747–100B SUD, 

747–200B, 747–200C, 747–200F, 747–300, 

747–400, 747–400D, 747–400F, and 747SR 

series airplanes, certificated in any category, 

as identified in Boeing Alert Requirements 

Bulletin 747–57A2367 RB, dated November 

15, 2019. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57, Wings. 

(e) Unsafe Condition 

This AD was prompted by reports of 

inboard foreflap departures from the 

airplane. The FAA is issuing this AD to 

address departures of the inboard foreflap 

assembly from the airplane, which could 

result in damage to the airplane and 

adversely affect the airplane’s continued safe 

flight and landing. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified by paragraph (h) of this 

AD: At the applicable times specified in the 

‘‘Compliance’’ paragraph of Boeing Alert 

Requirements Bulletin 747–57A2367 RB, 

dated November 15, 2019, do all applicable 

actions identified in, and in accordance with, 

the Accomplishment Instructions of Boeing 

Alert Requirements Bulletin 747–57A2367 

RB, dated November 15, 2019. 

Note 1 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can be found in Boeing Alert Service 

Bulletin 747–57A2367, dated November 15, 

2019, which is referred to in Boeing Alert 

Requirements Bulletin 747–57A2367 RB, 

dated November 15, 2019. 

(h) Exceptions to Service Information 

Specifications 

Where Boeing Alert Requirements Bulletin 

747–57A2367 RB, dated November 15, 2019, 

uses the phrase ‘‘the original issue date of 

Requirements Bulletin 747–57A2367 RB,’’ 

this AD requires using ‘‘the effective date of 

this AD.’’ 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle ACO 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 

certification office, send it to the attention of 

the person identified in paragraph (j) of this 

AD. Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@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. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by The Boeing Company 

Organization Designation Authorization 

(ODA) that has been authorized by the 

Manager, Seattle ACO Branch, FAA, to make 

those findings. To be approved, the repair 

method, modification deviation, or alteration 

deviation must meet the certification basis of 

the airplane, and the approval must 

specifically refer to this AD. 

(j) Related Information 

For more information about this AD, 

contact Eric Lin, Aerospace Engineer, 

Airframe Section, FAA, Seattle ACO Branch, 

2200 South 216th St., Des Moines, WA 

98198; phone and fax: 206–231–3523; email: 

eric.lin@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 the AD specifies otherwise. 

(i) Boeing Alert Requirements Bulletin 

747–57A2367 RB, dated November 15, 2019. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

phone: 562–797–1717; internet: https://

www.myboeingfleet.com. 

(4) 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. 

(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 fedreg.legal@nara.gov, or go to: https:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on January 14, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–03593 Filed 2–22–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0691; Product 

Identifier 2020–NM–064–AD; Amendment 

39–21377; AD 2021–01–01] 

RIN 2120–AA64 

Airworthiness Directives; MHI RJ 

Aviation ULC (Type Certificate 

Previously Held by Bombardier, Inc.) 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

MHI RJ Aviation ULC Model CL–600– 

2B19 (Regional Jet Series 100 & 440) 

airplanes. This AD was prompted by 

evidence that a revised structural life 

limit of some components of the nose 

landing gear (NLG) and/or main landing 

gear (MLG) was not implemented during 

repair. This AD requires verifying that 

the affected components are installed on 

the airplane, revising the structural life 

limits in the existing structural 

deviation inspection requirements 

(SDIR) airplane document, and 

replacing affected components if 

necessary. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

DATES: This AD is effective March 30, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 30, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact MHI 

10754 Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 

RJ Aviation ULC, 12655 Henri-Fabre 

Blvd., Mirabel, Que ́bec J7N 1E1, 

Canada; Widebody Customer Response 

Center North America toll-free 

telephone +1–844–272–2720 or directdial telephone +1–514–855–8500; fax 

+1–514–855–8501; email thd.crj@

mhirj.com; internet https://mhirj.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. It is also available on the internet 

at https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–0691. 

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–2020– 

0691; 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: 

Andrea Jimenez, Aerospace Engineer, 

Airframe and Propulsion Section, FAA, 

New York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7330; fax 

516–794–5531; email 9-avs-nyaco-cos@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian AD 

CF–2020–09, dated April 7, 2020 (also 

referred to as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for certain MHI RJ Aviation ULC Model 

CL–600–2B19 (Regional Jet Series 100 & 

440) airplanes. You may examine the 

MCAI in the AD docket on the internet 

at https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–0691. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain MHI RJ Aviation ULC 

Model CL–600–2B19 (Regional Jet 

Series 100 & 440) airplanes. The NPRM 

published in the Federal Register on 

October 5, 2020 (85 FR 62626). The 

NPRM was prompted by evidence that 

a revised structural life limit of some 

components of the NLG and/or MLG 

was not implemented during repair. The 

NPRM proposed to require verifying 

that the affected components are 

installed on the airplane, revising the 

structural life limits in the existing SDIR 

airplane document, and replacing 

affected components if necessary. The 

FAA is issuing this AD to address 

structural life limits that are lower than 

the life limit published in the 

Maintenance Requirements Manual 

(MRM), Part 2. This condition, if not 

corrected, could lead to the collapse of 

the affected NLG and/or MLG, possibly 

resulting in airplane damage and injury 

to the occupants. See the MCAI for 

additional background information. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The FAA has considered 

the comment received. Air Line Pilots 

Association, International (ALPA) stated 

that it supports the NPRM. 

Additional Change Made to This AD 

This AD has been revised to provide 

the revised structural life limits in figure 

1 to paragraph (h) of this AD instead of 

referencing the individual repair 

engineering orders (REOs) in paragraph 

(h) of this AD. The REOs did not meet 

the Office of the Federal Register’s 

criteria for incorporation by reference. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comment received, and 

determined that air safety and the 

public interest require adopting this 

final rule with the changes described 

previously and minor editorial changes. 

The FAA has determined that these 

minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

The FAA also determined that these 

changes 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 

Bombardier has issued Service 

Bulletin 601R–32–112, dated November 

11, 2019. This service information 

describes procedures for verifying that 

affected components are installed on the 

airplane, revising the structural life 

limits in the existing SDIR airplane 

document, and replacing affected parts 

if necessary. This service information 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. 

Costs of Compliance 

The FAA estimates that this AD 

affects 456 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per product Cost on U.S. 

operators 

Up to 143 work-hours × $85 per hour = Up to $12,155 .................................... Up to $103,114 ...... Up to $115,269 ...... Up to $52,562,664. 

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 

Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 10755 

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. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of 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: 

2021–01–01 MHI RJ Aviation ULC (Type 

Certificate Previously Held by 

Bombardier, Inc.): Amendment 39– 

21377; Docket No. FAA–2020–0691; 

Product Identifier 2020–NM–064–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 30, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to MHI RJ Aviation ULC 

(type certificate previously held by 

Bombardier, Inc.) Model CL–600–2B19 

(Regional Jet Series 100 & 440) airplanes, 

certificated in any category, serial numbers 

7003 through 8999 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 32, Landing gear. 

(e) Reason 

This AD was prompted by evidence that a 

revised structural life limit of some 

components of the nose landing gear (NLG) 

and/or main landing gear (MLG) was not 

implemented during repair. The FAA is 

issuing this AD to address structural life 

limits that are lower than the life limits 

published in the Maintenance Requirements 

Manual (MRM), Part 2. This condition, if not 

corrected, could lead to the collapse of the 

affected NLG and/or MLG, possibly resulting 

in airplane damage and injury to the 

occupants. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Verification of Airplane or Technical 

Records 

Within 6 months from the effective date of 

this AD: Verify the airplane or technical 

records to determine if an NLG or MLG 

component listed in Table 1 or Table 2 of 

Bombardier Service Bulletin 601R–32–112, 

dated November 11, 2019, is installed on the 

airplane. If this verification determines that 

an affected component listed in Table 1 or 

Table 2 of Bombardier Service Bulletin 

601R–32–112, dated November 11, 2019, is 

installed on the airplane, perform the actions 

specified in paragraph (h) or (i) of this AD, 

as applicable. 

(h) Incorporation of the Structural Deviation 

Inspection Requirements (SDIR) Life Limit 

Into the Existing SDIR Airplane Document 

If the total flight cycles of the component 

is less than the revised SDIR life limit 

identified in figure 1 to paragraph (h) of this 

AD minus 2,000 flight cycles: Within 12 

months after completing the actions specified 

in paragraph (g) of this AD, incorporate the 

applicable revised life limit of the affected 

component into the existing SDIR airplane 

document as specified in figure 1 to 

paragraph (h) of this AD. 

BILLING CODE 4910–13–P 

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BILLING CODE 4910–13–C 

(i) Replacement of Repaired NLG and/or 

MLG Component 

If the total flight cycles of the component 

is equal to or more than the applicable 

revised SDIR life limit specified in figure 1 

to paragraph (h) of this AD minus 2,000 flight 

cycles: Within 12 months or 2,000 flight 

cycles, whichever occurs first, after 

completing the actions specified in paragraph 

(g) of this AD, replace the affected 

component with a serviceable component. 

(j) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install any component listed in 

Table 1 or Table 2 of Bombardier Service 

Bulletin 601R–32–112, dated November 11, 

2019, on any airplane without first 

incorporating the actions specified in 

paragraph (h) or (i) of this AD, as applicable. 

(k) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

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 Office, as appropriate. If 

sending information directly to the manager 

of the certification office, send it to ATTN: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO Branch, 1600 

Stewart Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7300; fax 516– 

794–5531. Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, New York ACO Branch, 

FAA; or Transport Canada Civil Aviation 

(TCCA); or MHI RJ Aviation ULC’s TCCA 

Design Approval Organization (DAO). If 

approved by the DAO, the approval must 

include the DAO-authorized signature. 


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(l) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

AD CF–2020–09, dated April 7, 2020, for 

related information. This MCAI may be 

found in the AD docket on the internet at 

https://www.regulations.gov by searching for 

and locating Docket No. FAA–2020–0691. 

(2) For more information about this AD, 

contact Andrea Jimenez, Aerospace Engineer, 

Airframe and Propulsion Section, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7330; fax 516–794–5531; email 9- 

avs-nyaco-cos@faa.gov. 

(m) 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) Bombardier Service Bulletin 601R–32– 

112, dated November 11, 2019. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact MHI RJ Aviation ULC, 12655 

Henri-Fabre Blvd., Mirabel, Que ́bec, J7N 1E1 

Canada; Widebody Customer Response 

Center North America toll-free telephone +1– 

844–272–2720 or direct-dial telephone +1– 

514–855–8500; fax +1–514–855–8501; email 

thd.crj@mhirj.com; internet https://

mhirj.com. 

(4) 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. 

(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 fedreg.legal@nara.gov, or go to: https:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on December 28, 2020. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–03565 Filed 2–22–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0674; Product 

Identifier 2020–NM–070–AD; Amendment 

39–21382; AD 2021–01–06] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Airbus SAS Model A330–200 and 

A330–300 series airplanes, and all 

Model A340–200 and A340–300 series 

airplanes. This AD was prompted by 

reports of hydraulic system failure due 

to fatigue failure of the screws attaching 

the manual valve to the ground service 

manifold (GSM). This AD requires, for 

certain GSMs, repetitive replacement of 

the hydraulic system GSM manual valve 

attachment screws having certain part 

numbers; and, for certain other GSMs 

with certain screws installed, 

replacement of those screws, 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 March 30, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 30, 2021. 

ADDRESSES: For EASA material 

incorporated by reference (IBR) in this 

AD, contact the EASA, KonradAdenauer-Ufer 3, 50668 Cologne, 

Germany; telephone +49 221 8999 000; 

email ADs@easa.europa.eu; internet 

www.easa.europa.eu. You may find this 

IBR material on the EASA website at 

https://ad.easa.europa.eu. For Airbus 

material incorporated by reference in 

this AD, contact Airbus SAS, 

Airworthiness Office—EAL, Rond-Point 

Emile Dewoitine No: 2, 31700 Blagnac 

Cedex, France; telephone +33 5 61 93 36 

96; fax +33 5 61 93 45 80; email 

airworthiness.A330-A340@airbus.com; 

internet http://www.airbus.com. You 

may view this IBR material 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. 

It is also available in the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0674. 

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–2020– 

0674; 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: 

Vladimir Ulyanov, Aerospace Engineer, 

Large Aircraft Section, International 

Validation Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3229; email 

vladimir.ulyanov@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2020–0093, dated April 24, 2020 (EASA 

AD 2020–0093) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or ‘‘the MCAI’’), to correct 

an unsafe condition for certain Airbus 

SAS Model A330–200 and A330–300 

series airplanes, and all Model A340– 

200 and A340–300 series airplanes. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Airbus SAS Model 

A330–200 and A330–300 series 

airplanes, and all Model A340–200 and 

A340–300 series airplanes. The NPRM 

published in the Federal Register on 

July 31, 2020 (85 FR 46012). The NPRM 

was prompted by reports of hydraulic 

system failure due to fatigue failure of 

the screws attaching the manual valve to 

the GSM. The NPRM proposed to 

require, for certain GSMs, repetitive 

replacement of the hydraulic system 

GSM manual valve attachment screws 

having certain part numbers; and, for 

certain other GSMs with certain screws 

installed, replacement of those screws, 

as specified in an EASA AD. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comments received on the NPRM