10784 Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–600, –700, –700C, –800, –900, 

and –900ER series airplanes, certificated in 

any category, line numbers 1 through 1934 

inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 28, Fuel. 

(e) Unsafe Condition 

This AD was prompted by a report that 

sealant was not applied to the side of body 

(SOB) slot inside of a pressurized boundary, 

which could lead to inconsistent application 

of the required secondary fuel barrier sealant 

(vapor barrier). The FAA is issuing this AD 

to address possible ignition of flammable 

fluid vapors, fire, or explosion, or fuel vapor 

inhalation by passengers and crew. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) SOB Slot Inspection and Related 

Investigative and Corrective Actions 

Within 9 months after the effective date of 

this AD: Do a general visual inspection for 

insufficient sealant in the SOB slot, and do 

all applicable related investigative and 

corrective actions, in accordance with Boeing 

Multi Operator Message MOM–MOM–20– 

0049–01B(R4), dated September 28, 2020. Do 

all related investigative and corrective 

actions before further flight, except as 

provided in paragraph (h) of this AD. 

(h) Deferred Repair 

Repair of insufficient sealant as required by 

paragraph (g) of this AD may be deferred for 

10 days provided there is no fuel present in 

the center tank as specified in the procedures 

in item 28–02A of the operator’s existing 

FAA-approved minimum equipment list, and 

there is no fuel contamination in the air 

distribution mix bay (ADMB). 

(i) Reporting Provisions 

Although the service information 

referenced in Boeing Multi Operator Message 

MOM–MOM–20–0049–01B(R4), dated 

September 28, 2020, specifies to report 

inspection findings, this AD does not require 

any report. 

(j) Credit for Previous Actions 

This paragraph provides credit for the 

actions specified in paragraphs (g), (h), and 

(i) of this AD, if those actions were performed 

before the effective date of this AD using the 

service information identified in paragraph 

(j)(1), (2), or (3) of this AD. 

(1) Boeing Multi Operator Message MOM– 

MOM–20–0049–01B(R1), dated January 29, 

2020. 

(2) Boeing Multi Operator Message MOM– 

MOM–20–0049–01B(R2), dated August 4, 

2020. 

(3) Boeing Multi Operator Message MOM– 

MOM–20–0049–01B(R3), dated September 

23, 2020. 

(k) 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 (l)(1) of 

this AD. Information may be emailed to: 9- 

ANM-Seattle-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. 

(l) Related Information 

(1) For more information about this AD, 

contact James Laubaugh, Aerospace Engineer, 

Propulsion Section, FAA, Seattle ACO 

Branch, 2200 South 216th St., Des Moines, 

WA 98198; phone and fax: 206–231–3622; 

email: james.laubaugh@faa.gov. 

(2) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (m)(3) and (4) of this AD. 

(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 the AD specifies otherwise. 

(i) Boeing Multi Operator Message MOM– 

MOM–20–0049–01B(R4), dated September 

28, 2020. 

(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; 

telephone 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. 2021–03592 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–2020–0467; Product 

Identifier 2020–NM–056–AD; Amendment 

39–21399; AD 2021–02–16] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all The 

Boeing Company Model 717–200 

airplanes. This AD was prompted by a 

report that during takeoff, both the 

captain’s and first officer’s airspeed 

indications froze at 80 knots. This AD 

requires modifying the air data heat 

(ADH) system to display the proper 

airspeed indications, testing, and any 

applicable corrective actions. 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 

Boeing Commercial Airplanes, 

Attention: Contractual & Data Services 

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

110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; internet 

https://www.myboeingfleet.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–2020–0467. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https:// 

Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 10785 

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0467; 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: Eric 

Igama, Aerospace Engineer, Systems 

and Equipment Section, FAA, Los 

Angeles ACO Branch, 3960 Paramount 

Boulevard, Lakewood, CA 90712–4137; 

phone: 562–627–5388; fax: 562–627– 

5210; email: roderick.igama@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all The Boeing Company Model 

717–200 airplanes. The NPRM 

published in the Federal Register on 

June 19, 2020 (85 FR 37031). The NPRM 

was prompted by a report that during 

takeoff, both the captain’s and first 

officer’s airspeed indications froze at 80 

knots. The NPRM proposed to require 

modifying the ADH system to display 

the proper airspeed indications, testing, 

and any applicable corrective actions. 

The FAA is issuing this AD to address 

pitot tubes blocked by ice, which could 

affect the airspeed indication provided 

to the flightcrew through the ADH 

system and result in loss of aircraft 

controllability. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comments received on the NPRM 

and the FAA’s response to each 

comment. 

Support for the NPRM 

Three commenters, The Air Line 

Pilots Association, International 

(ALPA), Boeing, and Patrick 

Imperatrice, indicated support for the 

NPRM. 

Request To Withdraw the NPRM 

Hawaiian Airlines stated that existing 

crew procedures would produce the 

same result as the actions specified in 

the proposed AD and asserted that the 

proposed actions should remain 

optional. The commenter explained that 

with these existing crew procedures, 

operators should not be subjected to the 

requirements specified in the proposed 

AD. The commenter asserted that 

operators with strong crew cultures, 

processes, and procedures would 

mitigate the unsafe condition addressed 

by the NPRM without unnecessary and 

costly modification to the airplane. The 

commenter provided text from its 

existing crew procedures with 

recommended changes and asked that 

these procedures be considered as 

alternatives to the actions described in 

Boeing Alert Service Bulletin 717– 

30A0009, dated March 31, 2020 (which 

was identified as the appropriate source 

of service information for completing 

the actions specified in the NPRM). The 

FAA infers that the commenter is 

requesting that the NPRM be 

withdrawn. 

The FAA disagrees with the 

commenter’s request. The FAA has 

determined that the crew procedures 

identified by the commenter do not 

adequately address the unsafe condition 

associated with the ADH system. The 

FAA’s determination was based on a 

report from Boeing that three operators 

reported that the ADH is not operating 

correctly. The FAA notes that this AD 

requires modifying the ADH system to 

display the proper airspeed indications 

and testing to address the unsafe 

condition, while the commenter’s 

proposal involves only procedural 

changes in lieu of a modification. 

However, operators may apply for an 

alternative method of compliance 

(AMOC) under the provisions of 

paragraph (i) of this AD, provided they 

can show that their proposed crew/ 

operational procedures would 

adequately address the unsafe 

condition. The FAA has determined that 

it is necessary to proceed with issuing 

the final rule as proposed and has not 

changed this AD regarding this issue. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 

final rule as proposed, except for 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. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Boeing Alert 

Service Bulletin 717–30A0009, dated 

March 31, 2020. This service 

information describes procedures for 

modifying the ADH system by installing 

new wires between the station (STA) 

110 relay panel and the left radio rack, 

and doing tests and applicable 

corrective actions until the tests are 

passed. 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. 

Other Relevant Rulemaking 

Group 1 airplanes identified in Boeing 

Alert Service Bulletin 717–30A0009, 

dated March 31, 2020, are identified as 

airplanes with a concurrent 

requirement: Boeing Alert Service 

Bulletin 717–30A0003. AD 2007–13–01, 

Amendment 39–15105 (72 FR 33852, 

June 20, 2007) (AD 2007–13–01) 

requires accomplishing the actions 

specified in Boeing Alert Service 

Bulletin 717–30A0003, Revision 2, 

dated November 28, 2006. AD 2007–13– 

01 requires operators to accomplish the 

actions (changing the wiring for the air 

data sensor heating system) within 24 

months after July 25, 2007 (the effective 

date of AD 2007–13–01). The FAA 

issued that AD to address the display of 

suspect or erratic airspeed indications 

during heavy rain conditions, which 

could reduce the ability of the 

flightcrew to maintain the safe flight 

and landing of the airplane. Since AD 

2007–13–01 already requires the 

concurrent service information, the FAA 

has not included Boeing Alert Service 

Bulletin 717–30A0003, Revision 2, 

dated November 28, 2006, as a 

concurrent requirement in this AD. 

Costs of Compliance 

The FAA estimates that this AD 

affects 113 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

10786 Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Modification * ................................................... 12 work-hours × $85 per hour = $1,020 ........ $4,863 $5,883 $664,779 

* The modification costs include the costs for testing. The FAA has received no definitive data on the costs of the corrective actions necessary 

to pass the testing. 

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. 

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: 

2021–02–16 The Boeing Company: 

Amendment 39–21399; Docket No. 

FAA–2020–0467; Product Identifier 

2020–NM–056–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 30, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all The Boeing 

Company Model 717–200 airplanes, 

certificated in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 30, Ice and rain protection. 

(e) Unsafe Condition 

This AD was prompted by a report that 

during takeoff, both the captain’s and first 

officer’s airspeed indicators froze at 80 knots. 

The FAA is issuing this AD to address pitot 

tubes blocked by ice, which could affect the 

airspeed indication provided to the 

flightcrew through the air data heat (ADH) 

system and result in loss of aircraft 

controllability. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraph (h) of this 

AD: At the applicable times specified in 

paragraph 1.E., ‘‘Compliance,’’ of Boeing 

Alert Service Bulletin 717–30A0009, dated 

March 31, 2020, do all applicable actions 

identified as ‘‘RC’’ (required for compliance) 

in, and in accordance with, the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 717–30A0009, dated March 

31, 2020. 

(h) Exception to Service Information 

Specifications 

Where Boeing Alert Service Bulletin 717– 

30A0009, dated March 31, 2020, uses the 

phrase ‘‘the original issue date of this service 

bulletin,’’ this AD requires using ‘‘the 

effective date of this AD.’’ 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Los Angeles 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-ANMLAACO-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, Los Angeles 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. 

(4) For service information that contains 

steps that are labeled as Required for 

Compliance (RC), the provisions of 

paragraphs (i)(4)(i) and (ii) of this AD apply. 

(i) The steps labeled as RC, including 

substeps under an RC step and any figures 

identified in an RC step, must be done to 

comply with the AD. If a step or substep is 

labeled ‘‘RC Exempt,’’ then the RC 

requirement is removed from that step or 

substep. An AMOC is required for any 

deviations to RC steps, including substeps 

and identified figures. 

(ii) Steps not labeled as RC may be 

deviated from using accepted methods in 

accordance with the operator’s maintenance 

or inspection program without obtaining 

approval of an AMOC, provided the RC steps, 

including substeps and identified figures, can 

still be done as specified, and the airplane 

can be put back in an airworthy condition. 

(j) Related Information 

For more information about this AD, 

contact Eric Igama, Aerospace Engineer, 

Systems and Equipment Section, FAA, Los 

Angeles ACO Branch, 3960 Paramount 

Boulevard, Lakewood, CA 90712–4137; 

phone: 562–627–5388; fax: 562–627–5210; 

email: roderick.igama@faa.gov. 

Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 10787 

(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 Service Bulletin 717– 

30A0009, dated March 31, 2020. 

(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; 

telephone 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. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–03591 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–2020–0673; Product 

Identifier 2020–NM–076–AD; Amendment 

39–21395; AD 2021–02–12] 

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 all 

Airbus SAS Model A330–200 series 

airplanes, Model A330–200 Freighter 

series airplanes, Model A330–300 series 

airplanes, Model A330–900 series 

airplanes, Model A340–200 series 

airplanes, Model A340–300 series 

airplanes, Model A340–500 series 

airplanes, Model A340–600 series 

airplanes, Model A380–800 series 

airplanes; and Model A350–941 and 

–1041 airplanes. This AD was prompted 

by a report of a quality issue with a 

certain repair method of damagethrough honeycomb core cargo linings 

by speed patches applied to both sides. 

This AD requires repair of each affected 

part, or replacement with a serviceable 

part, 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 a certain publication listed in this AD 

as of March 30, 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 

IBR material on the EASA website at 

https://ad.easa.europa.eu. 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– 

0673. 

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– 

0673; 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: Dan 

Rodina, Aerospace Engineer, Large 

Aircraft Section, International 

Validation Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

phone and fax: 206–231–3225; email: 

dan.rodina@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2020–100R1, dated November 4, 2020 

(EASA AD 2020–100R1) (also referred to 

as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for all Airbus SAS Model A330–200 

series airplanes, Model A330–200 

Freighter series airplanes, Model A330– 

300 series airplanes, Model A330–900 

series airplanes, Model A340–200 series 

airplanes, Model A340–300 series 

airplanes, Model A340–500 series 

airplanes, Model A340–600 series 

airplanes, Model A380–800 series 

airplanes; and Model A350–941 and 

–1041 airplanes. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all Airbus SAS Model A330– 

200 series airplanes, Model A330–200 

Freighter series airplanes, Model A330– 

300 series airplanes, Model A330–900 

series airplanes, Model A340–200 series 

airplanes, Model A340–300 series 

airplanes, Model A340–500 series 

airplanes, Model A340–600 series 

airplanes, Model A380–800 series 

airplanes; and Model A350–941 and 

–1041 airplanes. The NPRM published 

in the Federal Register on July 28, 2020 

(85 FR 45350). The NPRM was 

prompted by a report of a quality issue 

with a certain repair method of damagethrough honeycomb core cargo linings 

by speed patches applied to both sides. 

The NPRM proposed to require a 

detailed inspection of each affected part 

and, depending on findings, repair of 

each affected part, or replacement with 

a serviceable part, as specified in an 

EASA AD. 

The FAA is issuing this AD to address 

reduced ability of repaired linings to 

contain smoke or fire, resulting in an 

increased risk of an uncontained fire in 

the cargo compartment and consequent 

structural damage to the airplane. See 

the MCAI for additional background 

information. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comments received on the NPRM 

and the FAA’s response to each 

comment. 

Requests To Reference Revised EASA 

AD 

American Airlines and Delta Airlines 

(DAL) requested that the FAA revise the 

proposed AD to reference EASA AD 

2020–100R1. DAL pointed out that there 

are several instances where the 

requirements in EASA AD 2020–0100 

are unclear, contradictory to the source