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 


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Federal Register / Vol. 86, No. 148 / Thursday, August 5, 2021 / Rules and Regulations 42699 

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: 

Barbara Caufield, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 

District Avenue, Burlington, MA 01803; 

phone: (781) 238–7146; fax: (781) 238– 

7199; email: barbara.caufield@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all P&WC PW210A and 

PW210S model turboshaft engines. The 

NPRM published in the Federal 

Register on February 26, 2021 (86 FR 

11651). The NPRM was prompted by a 

report from the manufacturer that the 

ADTS may under-count the number of 

cycles accrued by the impeller and the 

HPC rotor. The impeller and HPC rotor 

are both life-limited components and 

exceeding their published life limits 

could result in the failure of these 

components. In the NPRM, the FAA 

proposed to require the use of the 

manual 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. 

Transport Canada Civil Aviation 

(Transport Canada), which is the 

aviation authority for Canada, has 

issued Transport Canada AD CF–2020– 

13, dated April 28, 2020 (referred to 

after this as ‘‘the MCAI’’), to address the 

unsafe condition on these products. The 

MCAI states: 

The engine manufacturer has discovered 

that the Automated Damage Tracking System 

(ADTS) may under-count the number of 

cycles accrued by the impeller and the High 

Pressure (HP) compressor rotor. The impeller 

and HP compressor rotor are both life limited 

components and exceeding their published 

life limits could result in the failure of these 

components. 

Failure of the impeller or HP compressor 

rotor could result in the uncontained release 

of the impeller or the HP compressor rotor, 

and subsequently could result in damage to 

the engine, damage to the helicopter, and loss 

of control of the helicopter. 

This [Transport Canada] AD mandates the 

use of the Manual Low Cycle Fatigue (LCF) 

Counting method to ensure that the impeller 

and HP compressor rotor do not exceed their 

published life limits. 

You may obtain further information 

by examining the MCAI in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2020–0103. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

one commenter. The individual 

commenter supported the NPRM 

without change. 

Clarification That Reporting Is Not 

Required 

The FAA added paragraph (i) to this 

AD to clarify that the reporting specified 

in P&WC Alert Service Bulletin (ASB) 

No. PW210–72–A57142, Revision No. 1, 

dated March 26, 2020, and P&WC ASB 

No. PW210–72–A57143, Revision No. 1, 

dated March 26, 2020, is not required by 

this AD. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comments received, and 

determined that air safety requires 

adopting the AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. Except for minor editorial 

changes, and any other changes 

described previously, this AD is 

adopted as proposed in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Pratt & Whitney 

Canada Corp. Alert Service Bulletin 

(ASB) No. PW210–72–A57142, Revision 

No. 1, dated March 26, 2020 (ASB No. 

PW210–72–A57142); and Pratt & 

Whitney Canada Corp. ASB No. 

PW210–72–A57143, Revision No. 1, 

dated March 26, 2020 (ASB No. PW210– 

72–A57143). ASB No. PW210–72– 

A57142 specifies procedures for 

calculating the correct, current LCF 

cycle count for the impeller and HPC 

rotor on PW210A model turboshaft 

engines. ASB No. PW210–72–A57143 

specifies procedures for calculating the 

correct, current LCF cycle count for the 

impeller and HPC rotor installed on 

PW210S model turboshaft engines. 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 ADDRESSES. 

Other Related Service Information 

The FAA reviewed Pratt & Whitney 

Canada Corp. Task 00–00–00–860–801 

and Task 00–00–00–860–803 of Pratt & 

Whitney Canada Corp. Engine 

Maintenance Manual (EMM), Manual 

Part No. 30L2392, Airworthiness 

Limitations Section (ALS), both at 

Revision 13, dated September 28, 2020. 

Pratt & Whitney Canada Corp. Task 

00–00–00–860–801 of Pratt & Whitney 

Canada Corp. EMM, Manual Part No. 

30L2392, identifies the LCF life limits 

for the impeller and HPC rotor. Pratt & 

Whitney Canada Corp. Task 00–00–00– 

860–803 of Pratt & Whitney Canada 

Corp. EMM, Manual Part No. 30L2392, 

describes procedures for manually 

calculating the correct, current LCF 

cycle count for the impeller and HPC 

rotor and provides the formula for 

manually calculating the accumulated 

total cycles for the impeller and HPC 

rotor. 

Interim Action 

The FAA considers this AD to be an 

interim action. If final action is later 

identified, the FAA might consider 

additional rulemaking. 

Costs of Compliance 

The FAA estimates that this AD 

affects 66 engines installed on 

helicopters of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Manually calculate LCF cycles ....................... 1 work-hour × $85 per hour = $85 ................. $0 $85 $5,610 

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 


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42700 Federal Register / Vol. 86, No. 148 / Thursday, August 5, 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 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: 

2021–15–12 Pratt & Whitney Canada Corp.: 

Amendment 39–21659; Docket No. 

FAA–2020–0103; Project Identifier 

MCAI–2020–00604–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective September 9, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pratt & Whitney Canada 

Corp. (P&WC) PW210A and PW210S model 

turboshaft engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

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, which could result in the failure of 

these components. The FAA is issuing this 

AD to prevent failure of the impeller and the 

HPC rotor. The unsafe condition, if not 

addressed, could result in the uncontained 

release of the impeller or the HPC rotor, 

damage to the engine, damage to the 

helicopter, and loss of control of the 

helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Before exceeding 7,000 starts or 14,000 

flight cycles since new on the affected 

engine, or prior to removal of the engine from 

the aircraft for the purpose of sending the 

engine to a repair or overhaul facility, 

whichever occurs first after the effective date 

of this AD: 

(1) Use the manual low-cycle fatigue (LCF) 

counting method to determine the 

accumulated LCF cycles for the impeller and 

the HPC rotor using paragraph 3.A., 

Accomplishment Instructions, of P&WC Alert 

Service Bulletin (ASB) No. PW210–72– 

A57142, Revision No. 1, dated March 26, 

2020, or P&WC ASB No. PW210–72–A57143, 

Revision No. 1, dated March 26, 2020, as 

applicable for the engine model. 

(2) After performing the actions required 

by paragraph (g)(1) of this AD, use the 

manual LCF counting method specified in 

paragraph (g)(1) of this AD to count 

subsequent LCF cycles on the impeller and 

HPC rotor. Do not use the ADTS to count 

subsequent LCF cycles on the impeller or the 

HPC rotor. 

(h) Definition 

For the purpose of this AD, a ‘‘start’’ is an 

engine start followed by one or more flights. 

(i) No Reporting Requirement 

The reporting requirement specified in the 

Accomplishment Instructions, paragraph 

3.A.4., of P&WC ASB No. PW210–72– 

A57142, Revision No. 1, dated March 26, 

2020, and paragraph 3.A.4., of P&WC ASB 

No. PW210–72–A57143, Revision No. 1, 

dated March 26, 2020, is not required by this 

AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, ECO 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 ECO Branch, send it to 

the attention of the person identified in 

Related Information. 

(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. 

(k) Related Information 

(1) For more information about this AD, 

contact Barbara Caufield, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: (781) 

238–7146; fax: (781) 238–7199; email: 

barbara.caufield@faa.gov. 

(2) Refer to Transport Canada Civil 

Aviation (TCCA) AD CF–2020–13, dated 

April 28, 2020, for more information. You 

may examine the TCCA AD in the AD docket 

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

for and locating Docket No. FAA–2020–0103. 

(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) Pratt & Whitney Canada Corp. (P&WC) 

Alert Service Bulletin (ASB) No. PW210–72– 

A57142, Revision No. 1, dated March 26, 

2020. 

(ii) P&WC ASB No. PW210–72–A57143, 

Revision No. 1, dated March 26, 2020. 

(3) For P&WC service information 

identified in this AD, contact Pratt & Whitney 

Canada Corp., 1000 Marie-Victorin, 

Longueuil, Quebec, J4G 1A1 Canada; phone: 

(800) 268–8000. 

(4) You may view this service information 

at 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. 

(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/ 

ibr-locations.html. 

Issued on July 15, 2021. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–16544 Filed 8–4–21; 8:45 am] 

BILLING CODE 4910–13–P 


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