42696 Federal Register / Vol. 86, No. 148 / Thursday, August 5, 2021 / Rules and Regulations 

changes to procedures or tests identified as 

RC require approval of an AMOC. 

(j) Related Information 

For more information about this AD, 

contact Kathleen Arrigotti, Aerospace 

Engineer, Large Aircraft Section, 

International Validation Branch, FAA, 2200 

South 216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3218; email 

kathleen.arrigotti@faa.gov. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

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

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2021–0004, dated January 6, 

2021. 

(ii) [Reserved] 

(3) For EASA AD 2021–0004, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

000; email ADs@easa.europa.eu; internet 

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

EASA AD on the EASA website at https://

ad.easa.europa.eu. 

(4) You may view this 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. This material may be found 

in the AD docket on the internet at https:// 

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0343. 

(5) You may view this material that is 

incorporated by reference at the National 

Archives and Records Administration 

(NARA). For information on the availability 

of this material at NARA, email fedreg.legal@

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

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

Issued on July 14, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–16560 Filed 8–4–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0019; Project 

Identifier MCAI–2020–01388–T; Amendment 

39–21649; AD 2021–15–02] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

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 

Airbus Canada Limited Partnership 

Model BD–500–1A10 and BD–500– 

1A11 airplanes. This AD was prompted 

by reports of deficiencies in the primary 

flight control computer (PFCC) software 

and the remote electronics unit (REU) 

software. This AD requires installation 

of a software update to correct 

deficiencies in the PFCC and REU 

software, as specified in a Transport 

Canada Civil Aviation (TCCA) 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 September 9, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of September 9, 2021. 

ADDRESSES: For TCCA material 

incorporated by reference (IBR) in this 

AD, contact TCCA, Transport Canada 

National Aircraft Certification, 159 

Cleopatra Drive, Nepean, Ontario K1A 

0N5, Canada; telephone 888–663–3639; 

email AD-CN@tc.gc.ca; internet https:// 

tc.canada.ca/en/aviation. 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–2021– 

0019. 

For the Airbus Canada material 

identified in this AD that is not 

incorporated by reference, 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. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0019; 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: 

Thomas Niczky, Aerospace Engineer, 

Avionics and Electrical Systems 

Section, FAA, New York ACO Branch, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7347; fax 516–794–5531; email 9- 

avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

TCCA, which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2020–36, dated October 8, 2020 (TCCA 

AD CF–2020–36) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or the MCAI), to correct an 

unsafe condition for certain Airbus 

Canada Limited Partnership Model BD– 

500–1A10 and BD–500–1A11 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 Canada Limited 

Partnership Model BD–500–1A10 and 

BD–500–1A11 airplanes. The NPRM 

published in the Federal Register on 

February 24, 2021 (86 FR 11178). The 

NPRM was prompted by reports of 

deficiencies in the PFCC and REU 

software. The NPRM proposed to 

require installation of a software update 

to correct deficiencies in the PFCC and 

REU software, as specified in TCCA AD 

CF–2020–36. 

The FAA is issuing this AD to address 

software deficiencies that, if not 

corrected, could impact flight control 

functions, which could prevent 

continued safe flight and landing. 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 


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Federal Register / Vol. 86, No. 148 / Thursday, August 5, 2021 / Rules and Regulations 42697 

comment. Air Line Pilots Association, 

International (ALPA) expressed support 

for the NPRM. 

Request To Clarify Software 

Installation Requirements 

Delta Air Lines (Delta) requested that 

paragraphs (h)(3) and (4) be added to the 

proposed AD to clarify that it is 

acceptable to use a different method of 

upgrading the REU and PFCC with the 

specified software, using Airbus Canada 

Service Bulletin (SB) BD500–270013, 

Issue 001, dated July 17, 2020, only as 

a reference. Delta explained that it has 

a different policy for installing PFCC 

software that requires the use of a 

Portable Maintenance Access Terminal 

(PMAT), model PMAT2000, instead of a 

USB device. 

The FAA partially agrees with the 

proposed changes. The FAA agrees to 

clarify that the PMAT method is 

permitted, but the FAA will not require 

the use of a specific model of PMAT. 

Also, using the service information as a 

reference must be specified in a note 

rather than in the paragraph itself. 

Therefore, a single paragraph (h)(3) has 

been added to this AD to provide this 

clarification, and a note has been added 

regarding the use of Airbus Canada 

Service Bulletin (SB) BD500–270013, 

Issue 001, dated July 17, 2020, as a 

reference. 

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 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 

TCCA AD CF–2020–36 describes 

procedures for installing updated PFCC 

and REU software; this installation 

includes prerequisites (installing certain 

database versions and software) that 

must be met prior to the installation. 

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 38 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 18 work-hours × $85 per hour = Up to $1,530 ........... Up to $21,100 * ..................... Up to $22,630 ....................... Up to $859,940. 

* Cost if operators elect to have manufacturer load software in REUs. 

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 

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: 

2021–15–02 Airbus Canada Limited 

Partnership (Type Certificate Previously 

Held by C Series Aircraft Limited 

Partnership (CSALP); Bombardier, Inc.): 

Amendment 39–21649; Docket No. 

FAA–2021–0019; Project Identifier 

MCAI–2020–01388–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective September 9, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus Canada Limited 

Partnership Model BD–500–1A10 and BD– 

500–1A11 airplanes, certificated in any 

category, as identified in Transport Canada 

Civil Aviation (TCCA) AD CF–2020–36, 

dated October 8, 2020 (TCCA AD CF–2020– 

36). 


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42698 Federal Register / Vol. 86, No. 148 / Thursday, August 5, 2021 / Rules and Regulations 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27, Flight control system. 

(e) Reason 

This AD was prompted by reports of 

deficiencies in the primary flight control 

computer (PFCC) software and remote 

electronics unit (REU) software. The FAA is 

issuing this AD to address software 

deficiencies that, if not corrected, could 

impact flight control functions, which could 

prevent continued safe flight and landing. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, TCCA AD CF–2020–36. The 

prerequisites specified in the service 

information referenced in TCCA AD CF– 

2020–36 must be met prior to accomplishing 

the required actions. 

(h) Exception and Clarification of TCCA AD 

CF–2020–36 

(1) Where TCCA AD CF–2020–36 refers to 

its effective date, this AD requires using the 

effective date of this AD. 

(2) The compliance time for the actions 

required by paragraph (g) of this AD is the 

earliest of the times specified in paragraphs 

(h)(2)(i) through (iii) of this AD. 

(i) Prior to the accumulation of 12,000 total 

flight hours. 

(ii) Within 56 months after the effective 

date of this AD. 

(iii) Within 9,350 flight hours after the 

effective date of this AD. 

(3) Where TCCA AD CF–2020–36 specifies 

installing software updates on the PFCCs 

using a USB-type device, this AD also allows 

the use of a portable maintenance access 

terminal (PMAT)-type device. 

Note 1 to paragraph (h)(3): When using a 

PMAT-type device, guidance for upgrading 

the software can be found in Airbus Canada 

Service Bulletin (SB) BD500–270013, Issue 

001, dated July 17, 2020. 

(i) 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 

responsible Flight Standards 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)(1) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. Before using any 

approved AMOC, notify your appropriate 

principal inspector, or lacking a principal 

inspector, the manager of the responsible 

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 TCCA; or Airbus Canada’s TCCA 

Design Approval Organization (DAO). If 

approved by the DAO, the approval must 

include the DAO-authorized signature. 

(j) Related Information 

(1) For more information about this AD, 

contact Thomas Niczky, Aerospace Engineer, 

Avionics and Electrical Systems Section, 

FAA, New York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 11590; 

telephone 516–228–7347; fax 516–794–5531; 

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

(2) For Airbus Canada service information 

identified in this AD, which is not 

incorporated by reference, 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. This Airbus 

Canada service information is available also 

at the address specified in paragraph (k)(4) of 

this AD. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

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

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) Transport Canada Civil Aviation (TCCA) 

AD CF–2020–36, dated October 8, 2020. 

(ii) [Reserved] 

(3) For TCCA AD CF–2020–36, contact 

Transport Canada National Aircraft 

Certification, 159 Cleopatra Drive, Nepean, 

Ontario K1A 0N5, Canada; telephone 888– 

663–3639; email AD-CN@tc.gc.ca; internet 

https://tc.canada.ca/en/aviation. 

(4) You may view this 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. This material may be found 

in the AD docket on the internet at https:// 

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0019. 

(5) You may view this material that is 

incorporated by reference at the National 

Archives and Records Administration 

(NARA). For information on the availability 

of this material at NARA, email 

fr.inspection@nara.gov, or go to: https://

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

Issued on July 8, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–16563 Filed 8–4–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0103; Project 

Identifier MCAI–2020–00604–E; Amendment 

39–21659; AD 2021–15–12] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Canada Corp. Turboshaft 

Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all Pratt 

& Whitney Canada Corp. (P&WC) 

PW210A and PW210S model turboshaft 

engines. This AD was prompted by a 

report from the manufacturer that the 

Automated Damage Tracking System 

(ADTS) may under-count the number of 

cycles accrued by the impeller and the 

high-pressure compressor (HPC) rotor. 

This AD requires use of the manual lowcycle fatigue (LCF) counting method in 

place of the ADTS counting method to 

determine the number of cycles accrued 

by the impeller and HPC rotor. The FAA 

is issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective September 9, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of September 9, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact Pratt 

& Whitney Canada Corp., 1000 MarieVictorin, Longueuil, Quebec, J4G 1A1 

Canada; phone: (800) 268–8000. You 

may view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (781) 238– 

7759. It is also available at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0103. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–0103; 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, the mandatory continuing 

airworthiness information (MCAI), any 

comments received, and other 


khammond on DSKJM1Z7X2PROD with RULES