30766 Federal Register / Vol. 86, No. 110 / Thursday, June 10, 2021 / Rules and Regulations 

(PC–24 AMM) Report 02378, Issue 005, 

Revision 19, dated May 26, 2020. 

(ii) Horizontal stabilizer primary trim 

system secondary power source—Operation 

test, AMM data module PC24–A–E27–40– 

0000–01A–320A–A, dated September 25, 

2019, from PC–24 AMM Report 02378, Issue 

005, Revision 19, dated May 26, 2020. 

(3) For Pilatus Aircraft Ltd. service 

information identified in this AD, contact 

Pilatus Aircraft Ltd., Customer Support 

General Aviation, CH–6371 Stans, 

Switzerland; phone: +41 848 24 7 365; email: 

techsupport.ch@pilatus-aircraft.com; 

website: https://www.pilatus-aircraft.com. 

(4) You may view this service information 

at FAA, Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, MO 64106. For information on 

the availability of this material at the FAA, 

call (816) 329–4148. 

(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 May 7, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–12045 Filed 6–9–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1175; Product 

Identifier 2018–SW–071–AD; Amendment 

39–21563; AD 2021–11–01] 

RIN 2120–AA64 

Airworthiness Directives; Bell Textron 

Canada Limited Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2013–20– 

13 for certain Bell Helicopter Textron 

Canada Limited (now Bell Textron 

Canada Limited) (Bell) Model 206B and 

206L helicopters. AD 2013–20–13 

required installing a placard beneath the 

engine power dual tachometer and 

revising the Operating Limitations 

section of the existing Rotorcraft Flight 

Manual (RFM) for your helicopter. This 

AD was prompted by the engine 

manufacturer expanding the RPM (N2) 

steady-state operation avoidance range 

limits. This AD retains certain 

requirements of AD 2013–20–13, and 

requires revising certain sections of the 

existing RFM for your helicopter and 

installing or replacing a placard. The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective July 15, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of July 15, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact Bell 

Textron Canada Limited, 12,800 Rue de 

l’Avenir, Mirabel, Quebec J7J1R4; 

telephone (450) 437–2862 or (800) 363– 

8023; fax (450) 433–0272; or at https:// 

www.bellcustomer.com. You may view 

this service information at the FAA, 

Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood 

Pkwy., Room 6N–321, Fort Worth, TX 

76177. For information on the 

availability of this material at the FAA, 

call (817) 222–5110. Service information 

that is incorporated by reference is also 

available on the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

1175. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1175; 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 Transport Canada AD, any 

comments received, and other 

information. The street 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: 

Michael Hughlett, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, International Validation 

Branch, FAA, 10101 Hillwood Pkwy., 

Fort Worth, TX 76177; telephone (817) 

222–5889; email Michael.Hughlett@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2013–20–13, 

Amendment 39–17619 (78 FR 66252, 

November 5, 2013), (AD 2013–20–13). 

AD 2013–20–13 applied to Bell Model 

206B helicopters, serial number (S/N) 

004 through 4675, including helicopters 

converted from Model 206A; and Bell 

Model 206L helicopters, S/N 45001 

through 45153, and 46601 through 

46617. The NPRM published in the 

Federal Register on March 11, 2021 (86 

FR 13828). The NPRM proposed to 

require, within 25 hours time-in-service 

(TIS), revising the Operating Limitations 

and the Normal Procedures sections of 

the existing RFM for your helicopter 

and installing or replacing a placard. 

The NPRM was prompted by a 

determination from the manufacturers 

that the steady-state operation 

avoidance range limits needed to be 

expanded, amendments to the RFM 

needed to be incorporated, and a new 

placard (decal) needed to be installed. 

Transport Canada AD CF–2018–23, 

dated August 22, 2018 (AD CF–2018– 

23), issued by Transport Canada, which 

is the aviation authority for Canada, 

corrects an unsafe condition for Bell 

Model 206B series helicopters including 

those converted from Model 206A, S/Ns 

up to 4690, and model 206L series 

helicopters, S/Ns 45001 through 45153 

and 46601 through 46617. Transport 

Canada advises that Rolls Royce has 

expanded the RPM (N2) steady-state 

operation avoidance range limits due to 

several failures of the third stage turbine 

wheel. According to Transport Canada, 

Rolls Royce determined that detrimental 

vibrations could occur within a 

particular range of turbine speeds, 

which may be a contributing factor to 

these failures. Bell has also amended the 

RFMs and the engine starting 

procedures for RPM (N2) and provided 

a new decal (placard) to inform pilots to 

avoid steady-state operations at those 

engine turbine speeds. This condition, if 

not addressed, could result in turbine 

failure, engine power loss, and 

subsequent loss of control of the 

helicopter. 

Accordingly, Transport Canada AD 

CF–2018–23 requires incorporating the 

amended RFM power plant operating 

limitations and engine starting 

procedures for RPM (N2) steady-state 

operation and installing a new decal. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received no comments on 

the NPRM or on the determination of 

the costs. 

Conclusion 

These helicopters have been approved 

by the aviation authority of Canada and 

are approved for operation in the United 

States. Pursuant to the FAA’s bilateral 

agreement with Canada, Transport 

Canada, its technical representative, has 

notified the FAA of the unsafe condition 

described in its AD. The FAA reviewed 


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Federal Register / Vol. 86, No. 110 / Thursday, June 10, 2021 / Rules and Regulations 30767 

the relevant data and determined that 

air safety requires adopting this AD as 

proposed. Accordingly, the FAA is 

issuing this AD to address the unsafe 

condition on these helicopters. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed the following 

service information, which contains 

revised operating limitations and engine 

starting instructions: 

• Section 1, Operating Limitations, 

page 1–2A, of Bell Model 206B RFM 

BHT–206B–FM–1, Revision B–54, dated 

May 30, 2018 (BHT–206B–FM–1). 

• Section 2, Normal Procedures, page 

2–8 of BHT–206B–FM–1. 

• Section 1, Limitations, page 1–5, of 

Bell Model 206B3 RFM BHT–206B3– 

FM–1, Revision 17, dated May 30, 2018 

(BHT–206B3–FM–1). 

• Section 2, Normal Procedures, page 

2–10 of BHT–206B3–FM–1. 

• Section 1, Operating Limitations, 

page 1–4B, of Bell Model 206L RFM 

BHT–206L–FM–1, Revision 31, dated 

May 30, 2018 (BHT–206L–FM–1). 

• Section 2, Normal Procedures, page 

2–10 of BHT–206L–FM–1. 

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 Related Service Information 

The FAA reviewed Bell Alert Service 

Bulletin (ASB) 206–07–115, Revision D, 

for Model 206A and 206B helicopters, 

and ASB 206L–07–146, Revision C, for 

Model 206L helicopters, each dated July 

9, 2018. This service information 

contains procedures for installing a 

decal (placard) on the instrument panel 

below the Nr/N2 RPM dual tachometer 

indicator and inserting the RFM changes 

into the RFM. 

Differences Between This AD and the 

Transport Canada AD 

The Transport Canada AD requires 

compliance within 30 calendar days, 

while this AD requires compliance 

within 25 hours TIS. 

Costs of Compliance 

The FAA estimates that this AD 

affects 934 helicopters of U.S. Registry. 

Labor rates are estimated at $85 per 

work-hour. Based on these numbers, the 

FAA estimates the following costs to 

comply with this AD. 

Amending the existing RFM for your 

helicopter takes about 0.5 work-hour, 

for an estimated cost of $43 per 

helicopter and $40,162 for the U.S. fleet. 

Installing or replacing a placard takes 

about 0.2 work-hour and parts cost 

about $20, for a cost of $37 per 

helicopter. 

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. 

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: 

■ a. Removing Airworthiness Directive 

(AD) 2013–20–13, Amendment 39– 

17619 (78 FR 66252, November 5, 2013); 

and 

■ b. Adding the following new AD: 

2021–11–01 Bell Textron Canada Limited: 

Amendment 39–21563; Docket No. 

FAA–2020–1175; Product Identifier 

2018–SW–071–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective July 15, 2021. 

(b) Affected ADs 

This AD replaces AD 2013–20–13, 

Amendment 39–17619 (78 FR 66252, 

November 5, 2013). 

(c) Applicability 

This AD applies to the following Bell 

Textron Canada Limited (Bell) helicopters, 

certificated in any category: 

(1) Bell Model 206B, serial number (S/N) 

004 through 4690 inclusive, including 

helicopters converted from Model 206A; and 

Note 1 to paragraph (c)(1): Helicopters 

with a 206B3 designation are Model 206B 

helicopters. 

(2) Bell Model 206L, S/N 45001 through 

45153 inclusive, and 46601 through 46617 

inclusive. 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Code: 7250, Turbine Section. 

(e) Unsafe Condition 

This AD defines the unsafe condition as a 

third stage turbine vibration. This condition 

could result in turbine failure, engine power 

loss, and subsequent loss of control of the 

helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within 25 hours time-in-service after the 

effective date of this AD: 

(1) For Bell Model 206B helicopters: 

(i) Revise the existing Rotorcraft Flight 

Manual (RFM) for your helicopter by 

inserting Section 1, Operating Limitations, 

page 1–2A, of Bell Model 206B RFM BHT– 

206B–FM–1, Revision B–54, dated May 30, 

2018 (BHT–206B–FM–1) or Section 1, 

Limitations, page 1–5, of Bell Model 206B3 

RFM BHT–206B3–FM–1, Revision 17, dated 

May 30, 2018 (BHT–206B3–FM–1), as 

applicable to your helicopter. Inserting a 

different document with ‘‘Steady-state 

operation’’ information identical to page 

1–2A of BHT–206B–FM–1 or page 1–5 of 

BHT–206B3–FM–1, as applicable to your 

helicopter, is acceptable for compliance with 

the requirements of this paragraph. 

(ii) Revise the existing RFM for your 

helicopter by inserting Section 2, Normal 

Procedures, page 2–8 of BHT–206B–FM–1 or 

Section 2, Normal Procedures, page 2–10 of 

BHT–206B3–FM–1, as applicable to your 

helicopter. Inserting a different document 

with ‘‘Continuous Operation’’ information 


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30768 Federal Register / Vol. 86, No. 110 / Thursday, June 10, 2021 / Rules and Regulations 

identical to page 2–8 of BHT–206B–FM–1 or 

page 2–10 of BHT–206B3–FM–1, as 

applicable to your helicopter, is acceptable 

for compliance with the requirements of this 

paragraph. 

(iii) Remove placard part number (P/N) 

230–075–213–121, if installed. 

(iv) Install placard P/N 230–075–213–129 

or placard P/N 230–075–213–131 on the 

instrument panel directly below the dual 

tachometer. 

(2) For Bell Model 206L helicopters: 

(i) Revise the existing RFM for your 

helicopter by inserting Section 1, Operating 

Limitations, page 1–4B, of Bell Model 206L 

RFM BHT–206L–FM–1, Revision 31, dated 

May 30, 2018 (BHT–206L–FM–1). Inserting a 

different document with ‘‘Steady-state 

operation’’ information identical to page 

1–4B of BHT–206L–FM–1 is acceptable for 

compliance with the requirements of this 

paragraph. 

(ii) Revise the existing RFM for your 

helicopter by inserting Section 2, Normal 

Procedures, page 2–10 of BHT–206L–FM–1. 

Inserting a different document with 

‘‘Continuous Operation’’ information 

identical to page 2–10 of BHT–206L–FM–1 is 

acceptable for compliance with the 

requirements of this paragraph. 

(iii) Remove placard P/N 230–075–213– 

123, if installed. 

(iv) Install placard P/N 230–075–213–129 

or placard P/N 230–075–213–131 on the 

instrument panel below the dual tachometer. 

(h) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

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 International Validation 

Branch, send it to the attention of the person 

identified in paragraph (i)(1) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@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. 

(i) Related Information 

(1) For more information about this AD, 

contact Michael Hughlett, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, International Validation Branch, 

FAA, 10101 Hillwood Pkwy., Fort Worth, TX 

76177; telephone (817) 222–5889; email 

Michael.Hughlett@faa.gov. 

(2) Bell Alert Service Bulletin (ASB) 206– 

07–115, Revision D, for Model 206A and 

206B helicopters, and ASB 206L–07–146, 

Revision C, for Model 206L helicopters, each 

dated July 9, 2018, which are not 

incorporated by reference, contain additional 

information about the subject of this AD. 

This service information is available at the 

contact information specified in paragraphs 

(j)(3) and (4) of this AD. 

(3) The subject of this AD is addressed in 

Transport Canada AD CF–2018–23, dated 

August 22, 2018. You may view the 

Transport Canada AD on the internet at 

https://www.regulations.gov in Docket No. 

FAA–2020–1175. 

(j) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 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) Page 1–2A of Section 1, Operating 

Limitations, and page 2–8 of Section 2, 

Normal Procedures, of Bell Model 206B 

Rotorcraft Flight Manual (RFM) BHT–206B– 

FM–1, Revision B–54, dated May 30, 2018. 

(ii) Page 1–5 of Section 1, Limitations, and 

page 2–10 of Section 2, Normal Procedures, 

of Bell Model 206B3 RFM BHT–206B3–FM– 

1, Revision 17, dated May 30, 2018. 

(iii) Page 1–4B of Section 1, Operating 

Limitations, and page 2–10 of Section 2, 

Normal Procedures, of Bell Model 206L RFM 

BHT–206L–FM–1, Revision 31, dated May 

30, 2018. 

(3) For service information identified in 

this AD, contact Bell Textron Canada 

Limited, 12,800 Rue de l’Avenir, Mirabel, 

Quebec J7J1R4; telephone (450) 437–2862 or 

(800) 363–8023; fax (450) 433–0272; or at 

https://www.bellcustomer.com. 

(4) You may view this service information 

at the FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood Pkwy., 

Room 6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(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 May 12, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–12040 Filed 6–9–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1170; Project 

Identifier MCAI–2020–00720–R; Amendment 

39–21575; AD 2021–11–13] 

RIN 2120–AA64 

Airworthiness Directives; Bell Textron 

Canada Limited Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for Bell 

Textron Canada Limited (Bell) Model 

429 helicopters. This AD requires 

inspecting certain serial-numbered 

Emergency Flotation System (EFS) 

inflation hoses and depending on the 

results of those inspections, marking 

certain parts or removing certain parts 

from service. This AD was prompted by 

a report that a float compartment on an 

EFS did not inflate. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective July 15, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain document listed in this AD 

as of July 15, 2021. 

ADDRESSES: For Safran Aerosystems 

Services service information identified 

in this final rule, contact Bell Textron 

Canada Limited, 12,800 Rue de l’Avenir, 

Mirabel, Quebec J7J1R4; telephone 450– 

437–2862 or 800–363–8023; fax 450– 

433–0272; or at https://

www.bellcustomer.com. You may view 

the referenced service information at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood 

Pkwy., Room 6N–321, Fort Worth, TX 

76177. It is also available on the internet 

at https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1170. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1170; 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 Transport Canada AD, any 

service information that is incorporated 

by reference, any comments received, 

and other information. The street 

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: Matt 

Fuller, AD Program Manager, 

Operational Safety Branch, 

Airworthiness Products Section, 

General Aviation & Rotorcraft Unit, 

FAA, 10101 Hillwood Pkwy., Fort 

Worth, TX 76177; telephone 817–222– 

5110; email matthew.fuller@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 


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