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Federal Register / Vol. 86, No. 36 / Thursday, February 25, 2021 / Rules and Regulations 6 Where paragraph 1 of EASA AD 2020
0086 refers to a compliance time of within 25 flight hours or during the next scheduled 50 FH inspection, whichever occurs later . . . , for the initial replacement, this AD
requires completion within 25 hours time-inservice after the effective date of this AD.
i Alternative Methods of Compliance AMOCs
BILLING CODE 491013P

Federal Aviation Administration 14 CFR Part 39

For more information about this AD, contact Daniel Moore, Aviation Safety Engineer, Denver ACO Branch, Compliance &
Airworthiness Division, FAA, 26805 E 68th Ave., Denver, CO 80249; telephone 303342
1095; email daniel.e.moore@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. 552a 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 20200086, dated April 14, 2020.
ii Reserved 3 For EASA AD 20200086, contact the EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221 8999
000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this EASA AD on the EASA website at https
ad.easa.europa.eu.
4 You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 8172225110. This material may be found in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20200983.
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.

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Airworthiness Directives; Bell Textron Canada Limited Type Certificate Previously Held by Bell Helicopter Textron Canada Limited Helicopters Federal Aviation Administration FAA, Department of Transportation DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Bell Textron Canada Limited type certificate previously held by Bell Helicopter Textron Canada Limited Model 429 helicopters. This AD was prompted by the introduction of a new life limit for the centrifugal force bearing CFB. This AD requires determining the accumulated retirement index number RIN and removing each affected CFB from service before it accumulates 8,000 total RIN. The FAA
is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective April 1, 2021.
For service information identified in this final rule, contact Bell Textron Canada Limited, 12,800 Rue de lAvenir, Mirabel, Quebec J7J 1R4;
telephone 4504372862 or 800363
8023; fax 4504330272; 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 6N321, Fort Worth, TX
76177. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 8172225110.

ADDRESSES:

Examining the AD Docket You may examine the AD docket on the internet at https
www.regulations.gov by searching for
PO 00000

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and locating Docket No. FAA2020
0860; 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 street address for Docket Operations is U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Matt Fuller, AD Program Manager, Continued Operational Safety Branch, Airworthiness Products Section, General Aviation and Rotorcraft Unit, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817222
5110; email matthew.fuller@faa.gov.

FOR FURTHER INFORMATION CONTACT:

Docket No. FAA20200860; Product Identifier 2019SW005AD; Amendment 3921416; AD 20210313

SUMMARY:

j Related Information
16:18 Feb 24, 2021

FR Doc. 202103662 Filed 22421; 8:45 am
DEPARTMENT OF TRANSPORTATION

1 The Manager, Strategic Policy Rotorcraft Section, 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 Strategic Policy Rotorcraft Section, send it to: Manager, Strategic Policy Rotorcraft Section, FAA, 10101 Hillwood Pkwy., Fort Worth, TX
76177; telephone 8172225110. Information may be emailed to: 9-ASW-FTW-AMOCRequests@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.

VerDate Sep<11>2014

Issued on January 21, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.

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SUPPLEMENTARY INFORMATION:

Discussion Transport Canada Civil Aviation TCCA, which is the aviation authority for Canada, issued Transport Canada AD
CF201903, dated January 31, 2019
referred to after this as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for certain Bell Helicopter Textron Canada Limited now Bell Textron Canada Limited Model 429
helicopters. TCCA advises that an airworthiness limitations schedule document introduces a new life limit for CFB part number P/N 429310003
103, a component that was not previously included. Failure to observe the CFB life limit could result in excessive vibration and loss of control of the helicopter. You may examine the MCAI in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20200860.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Bell Helicopter Textron Canada Limited now Bell Textron Canada Limited Model 429 helicopters.
The NPRM published in the Federal Register on October 1, 2020 85 FR
61879. The NPRM was prompted by the introduction of a new life limit for the CFB. The NPRM proposed to require determining the accumulated RIN and removing each affected CFB from service before it accumulates 8,000 total RIN. The FAA is issuing this AD to address a CFB remaining in service beyond its fatigue life. Failure to observe the CFB life limit could result in excessive vibration and loss of control of the helicopter. See the MCAI
for additional background information.

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