11108 Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Rules and Regulations 

Structural Inspection Document D6–48040–1, 

Volume II, Temporary Revision 11–1001, 

dated February 2020. 

(2) At the applicable time specified in 

paragraph (g)(2)(i) or (ii) of this AD, perform 

initial inspections to detect cracks in the SSIs 

identified in Boeing 727 Supplemental 

Structural Inspection Document D6–48040–1, 

Volume I, Temporary Revision 08–1001, 

dated February 2020; and Boeing 727 

Supplemental Structural Inspection 

Document D6–48040–1, Volume II, 

Temporary Revision 11–1001, dated February 

2020. 

(i) For Model 727–100C and 727–200F 

series airplanes: Inspect prior to the 

accumulation of 46,000 total flight cycles, or 

within 12 months after the effective date of 

this AD, whichever occurs later. 

(ii) For all airplanes except for those 

airplanes identified in paragraph (g)(2)(i) of 

this AD: Inspect prior to the accumulation of 

55,000 total flight cycles, or within 3,000 

flight cycles measured from the date 12 

months after the effective date of this AD, 

whichever occurs later. 

(3) At the intervals specified in in Boeing 

727 Supplemental Structural Inspection 

Document D6–48040–1, Volume I, 

Temporary Revision 08–1001, dated February 

2020; and Boeing 727 Supplemental 

Structural Inspection Document D6–48040–1, 

Volume II, Temporary Revision 11–1001, 

dated February 2020, as applicable, repeat 

the inspections required by paragraph (g)(2) 

of this AD. 

(4) If any cracked structure is found during 

any inspections required by paragraph (g) of 

this AD, repair before further flight using an 

FAA-approved method or using a method 

approved in accordance with the procedures 

specified in paragraph (j) of this AD. Within 

12 months after repair, incorporate a revision 

into the maintenance or inspection program, 

as applicable, to include a damage-tolerancebased alternative inspection program for the 

repaired structure. Thereafter, inspect the 

affected structure in accordance with the 

alternative program. The inspection method 

and compliance times (i.e., threshold and 

repetitive intervals) of the alternative 

program must be approved in accordance 

with the procedures specified in paragraph (j) 

of this AD. 

(h) No Alternative Actions or Intervals 

After the existing maintenance or 

inspection program has been revised as 

required by paragraph (g)(1) of this AD, no 

alternative actions (e.g., inspections) or 

intervals may be used unless the actions or 

intervals are approved as an alternative 

method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (j) of this AD. 

(i) Terminating Action for Certain 

Inspections Required by AD 98–11–03 R1 

Accomplishing the revision required by 

paragraph (g)(1) of this AD and the initial 

inspections identified in Boeing 727 

Supplemental Structural Inspection 

Document D6–48040–1, Volume I, 

Temporary Revision 08–1001, dated February 

2020; and Boeing 727 Supplemental 

Structural Inspection Document D6–48040–1, 

Volume II, Temporary Revision 11–1001, 

dated February 2020, as required by 

paragraph (g)(2) of this AD, terminate the 

corresponding SSI inspections specified in 

Boeing Document No. D6–48040–1, Volumes 

1 and 2, ‘‘Supplemental Structural Inspection 

Document’’ (SSID), Revision H, dated June 

1994, as required by AD 98–11–03 R1. 

(j) 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 (k) 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) AMOCs approved previously for AD 

98–11–03 R1 are approved as AMOCs for the 

corresponding provisions of this AD for the 

SSIs identified in Boeing 727 Supplemental 

Structural Inspection Document D6–48040–1, 

Volume I, Temporary Revision 08–1001, 

dated February 2020; and Boeing 727 

Supplemental Structural Inspection 

Document D6–48040–1, Volume II, 

Temporary Revision 11–1001, dated February 

2020. 

(k) Related Information 

For more information about this AD, 

contact Mohit Garg, Aerospace Engineer, 

Airframe Section, FAA, Los Angeles ACO 

Branch, 3960 Paramount Boulevard, 

Lakewood, CA 90712–4137; phone: 562–627– 

5264; fax: 562–627–5210; email: mohit.garg@

faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

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

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Boeing 727 Supplemental Structural 

Inspection Document D6–48040–1, Volume I, 

Temporary Revision 08–1001, dated February 

2020. 

(ii) Boeing 727 Supplemental Structural 

Inspection Document D6–48040–1, Volume 

II, Temporary Revision 11–1001, dated 

February 2020. 

(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 28, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–03598 Filed 2–23–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0859; Product 

Identifier 2020–NM–084–AD; Amendment 

39–21413; AD 2021–03–10] 

RIN 2120–AA64 

Airworthiness Directives; 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 

Bombardier, Inc., Model BD–100–1A10 

airplanes. This AD was prompted by 

reports of failure of a certain fire 

detection and extinguishing (FIREX) 

control unit. This AD requires replacing 

FIREX control units having a certain 

part number. The FAA is issuing this 

AD to address the unsafe condition on 

these products. 

DATES: This AD is effective March 31, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 31, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact 

Bombardier, Inc., 200 Coˆte Vertu Road 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Rules and Regulations 11109 

West, Dorval, Que ́bec H4S 2A3, Canada; 

North America toll-free telephone 1– 

866–538–1247 or direct-dial telephone 

1–514–855–2999; email ac.yul@

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. 

It is also available on the internet at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–0859. 

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– 

0859; 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: 

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: 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2020–12, dated April 17, 2020 (TCCA 

AD CF–2020–12) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or the MCAI), to correct an 

unsafe condition for certain Bombardier, 

Inc., Model BD–100–1A10 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– 

0859. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Bombardier, Inc., Model 

BD–100–1A10 airplanes. The NPRM 

published in the Federal Register on 

October 1, 2020 (85 FR 61881). The 

NPRM was prompted by reports of 

failure of a certain FIREX control unit. 

The NPRM proposed to require 

replacing FIREX control units having a 

certain part number. The FAA is issuing 

this AD to address the failure of a FIREX 

control unit, which could result in the 

loss of the ability to detect a fire. See the 

MCAI for additional background 

information. 

Comment 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comment received on the NPRM and 

the FAA’s response to that comment. 

Request To Allow Records Review 

NetJets requested that paragraph (i) of 

the proposed AD be revised to allow 

operators to review airplane 

maintenance records to determine the 

part number of the FIREX control unit 

installed on an airplane. The commenter 

stated that for the airplane having serial 

number (S/N) 20662 the logbook 

delivery document specifies that the –3 

FIREX control unit is installed. The 

commenter explained that there is not a 

signoff sheet for Bombardier Service 

Bulletin 350–26–001, but that the 

serialized parts list clearly indicates that 

the –3 FIREX control unit is installed. 

The FAA disagrees with the 

commenter’s request because this AD 

does not mandate the method an 

operator must use to determine what 

FIREX control unit part number is 

installed on an airplane. As specified in 

paragraph (c) of this AD, this AD is only 

applicable to Bombardier, Inc., Model 

BD–100–1A10 airplanes fitted with 

FIREX control unit part number (P/N) 

474112–2. If an operator is able to 

confirm that FIREX control unit P/N 

474112–3 is installed on an airplane the 

requirements of this AD are not 

applicable to that airplane. This AD 

requires operators to remove FIREX P/ 

N 474112–2 and install P/N 474112–3. 

The FAA has not changed this AD in 

regard to this issue. 

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 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 

Bombardier has issued Service 

Bulletin 100–26–01, Revision 01, dated 

December 5, 2019; and Service Bulletin 

350–26–001, Revision 01, dated 

December 5, 2019. This service 

information describes procedures for 

replacing FIREX control units having P/ 

N 474112–2 with units having P/N 

474112–3. These documents are distinct 

since they apply to different airplane 

configurations. 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 223 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 

1 work-hour × $85 per hour = $85 .............................................................................................. $6,389 $6,474 $1,443,702 

According to the manufacturer, some 

or all of the costs of this AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

operators. The FAA does not control 

warranty coverage for affected operators. 

As a result, the FAA has included all 

known costs in the cost estimate. 

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 


khammond on DSKJM1Z7X2PROD with RULES
11110 Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Rules and Regulations 

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: 

2021–03–10 Bombardier, Inc.: Amendment 

39–21413; Docket No. FAA–2020–0859; 

Product Identifier 2020–NM–084–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 31, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

Model BD–100–1A10 airplanes, certificated 

in any category, serial numbers 20003 

through 20500 inclusive, and 20501 through 

20669 inclusive, fitted with fire detection 

and extinguishing (FIREX) control unit part 

number (P/N) 474112–2. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 26, Fire protection. 

(e) Reason 

This AD was prompted by reports of failure 

of a certain FIREX control unit. The FAA is 

issuing this AD to address failure of a FIREX 

control unit, which could result in the loss 

of the ability to detect a fire. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Replacement 

Within 24 months after the effective date 

of this AD: Replace any FIREX control unit 

having P/N 474112–2 with a unit having P/ 

N 474112–3, in accordance with paragraphs 

2.B.(1) and (3) of the Accomplishment 

Instructions of the applicable Bombardier 

service bulletin specified in paragraphs (g)(1) 

and (2) of this AD. 

(1) For airplanes having serial numbers 

20003 through 20500 inclusive: Bombardier 

Service Bulletin 100–26–01, Revision 01, 

dated December 5, 2019. 

(2) For airplanes having serial numbers 

20501 through 20669 inclusive: Bombardier 

Service Bulletin 350–26–001, Revision 01, 

dated December 5, 2019. 

(h) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install a FIREX control unit 

having P/N 474112–2 on any airplane. 

(i) Credit for Previous Actions 

This paragraph provides credit for the 

actions required by paragraph (g) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 100–26–01, dated December 

20, 2016; or Bombardier Service Bulletin 

350–26–001, dated December 20, 2016, as 

applicable. 

(j) 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 District 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 district office/certificate 

holding district 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 Bombardier Inc.’s TCCA Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(k) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2020–12, dated May 1, 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–2020–0859. 

(2) For more information about this AD, 

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. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

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

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) Bombardier Service Bulletin 100–26–01, 

Revision 01, dated December 5, 2019. 

(ii) Bombardier Service Bulletin 350–26– 

001, Revision 01, dated December 5, 2019. 

(3) For service information identified in 

this AD, contact Bombardier, Inc., 200 Coˆte 

Vertu Road West, Dorval, Que ́bec H4S 2A3, 

Canada; North America toll-free telephone 1– 

866–538–1247 or direct-dial telephone 1– 

514–855–2999; email ac.yul@

aero.bombardier.com; internet https://

www.bombardier.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. 

(6) 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. 

(7) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Rules and Regulations 11111 

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 28, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–03600 Filed 2–23–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0977; Project 

Identifier MCAI–2020–01106–T; Amendment 

39–21415; AD 2021–03–12] 

RIN 2120–AA64 

Airworthiness Directives; Dassault 

Aviation Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2019–03– 

27, which applied to all Dassault 

Aviation Model Falcon 10 airplanes. AD 

2019–03–27 required repetitive detailed 

inspections of certain wing anti-ice 

outboard flexible hoses, and 

replacement of certain wing anti-ice 

outboard flexible hoses. This AD 

continues to require the actions in AD 

2019–03–27, and also adds a new life 

limit for the improved wing anti-ice 

flexible hose; as specified in a European 

Union Aviation Safety Agency (EASA) 

AD, which is incorporated by reference. 

This AD was prompted by a report 

indicating that certain wing anti-ice 

outboard flexible hoses were found 

damaged, likely resulting from the 

installation process, and the 

development of an improved wing antiice flexible hose. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective March 31, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 31, 2021. 

ADDRESSES: For material incorporated 

by reference (IBR) in this AD, contact 

the EASA, Konrad-Adenauer-Ufer 3, 

50668 Cologne, Germany; phone: +49 

221 8999 000; email: ADs@

easa.europa.eu; internet: 

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

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– 

0977. 

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– 

0977; 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: Tom 

Rodriguez, Aerospace Engineer, Large 

Aircraft Section, International 

Validation Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

phone and fax: 206–231–3226; email: 

tom.rodriguez@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2020–0127, dated June 4, 2020 (EASA 

AD 2020–0127) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or the MCAI), to correct an 

unsafe condition for all Dassault 

Aviation Model Falcon 10 airplanes. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2019–03–27, 

Amendment 39–19579 (84 FR 7801, 

March 5, 2019) (AD 2019–03–27). AD 

2019–03–27 applied to all Dassault 

Aviation Model Falcon 10 airplanes. 

The NPRM published in the Federal 

Register on November 2, 2020 (85 FR 

69269). The NPRM was prompted by a 

report indicating that certain wing antiice outboard flexible hoses were found 

damaged, likely resulting from the 

installation process, and the 

development of an improved wing antiice flexible hose. The NPRM proposed 

to continue to require the actions in AD 

2019–03–27, as specified in an EASA 

AD. The NPRM also proposed to require 

adding a new life limit for the improved 

wing anti-ice flexible hose, as specified 

in EASA AD 2020–0127. 

The FAA is issuing this AD to address 

damaged wing anti-ice outboard flexible 

hoses, which could lead to a loss of 

performance of the wing anti-ice 

protection system that is not 

annunciated to the pilot, and could 

result in reduced control of 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 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 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 

EASA AD 2020–0127 describes 

procedures for repetitive detailed 

inspections of certain wing anti-ice 

outboard flexible hoses, replacement of 

certain wing anti-ice outboard flexible 

hoses, a new life limit for certain wing 

anti-ice outboard flexible hoses, and 

optional terminating actions for the 

repetitive inspections (replacement of 

all damaged affected wing anti-ice 

outboard flexible hoses or 

accomplishing and passing an 

inspection on an affected wing anti-ice 

outboard flexible hose after it has 

accumulated 100 flight cycles since 

installation on an airplane). 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. 

Costs of Compliance 

The FAA estimates that this AD 

affects 54 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 


khammond on DSKJM1Z7X2PROD with RULES