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Federal Register / Vol. 86, No. 171 / Wednesday, September 8, 2021 / Rules and Regulations 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 k 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.
k Related Information
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Docket No. FAA20210377; Project Identifier MCAI202100380R; Amendment 3921674; AD 20211612
RIN 2120AA64

Airworthiness Directives; Bell Textron Canada Limited Helicopters
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210377; 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
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Hal Jensen, Aerospace Engineer, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 950
LEnfant Plaza N SW, Washington, DC
20024; telephone 202 2679167; email hal.jensen@faa.gov.

FOR FURTHER INFORMATION CONTACT:

Background
The FAA is adopting a new airworthiness directive AD for certain Bell Textron Canada Limited Model 505
helicopters. This AD was prompted by three occurrences of metallic debris in the engine oil lubrication system causing the 12 volts direct current VDC reference voltage to be shorted to ground and loss of important flight information to the pilot. This AD
requires replacing a certain partnumbered relay panel assembly. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective October 13, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain document listed in this AD
as of October 13, 2021.
ADDRESSES: For service information identified in this final rule, contact Bell Textron Canada Limited, 12,800 Rue de lAvenir, Mirabel, Quebec J7J1R4, Canada; telephone 450 4372862 or 800 3638023; fax 450 4330272;
email productsupport@bellflight.com; or at https www.bellflight.com/support/
contact-support. You may view the referenced 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 817 2225110. It is also available at https www.regulations.gov by searching for and locating Docket No.
FAA20210377.

PO 00000

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.

SUPPLEMENTARY INFORMATION:

SUMMARY:

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 Aviation Safety Agency EASA AD 20180006, dated January 10, 2018.
ii Reserved 3 For EASA AD 20180006, 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 817 2225110.
This material may be found in the AD docket at https www.regulations.gov by searching for and locating Docket No. FAA20210383.
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.

BILLING CODE 491013P

14 CFR Part 39

Federal Aviation Administration FAA, DOT.
ACTION: Final rule.

l Material Incorporated by Reference
FR Doc. 202119249 Filed 9721; 8:45 am
Federal Aviation Administration
AGENCY:

For more information about this AD, contact Kristi Bradley, Program Manager, COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177;
telephone 817 2225110; email kristin.bradley@faa.gov.

Issued on July 26, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.

DEPARTMENT OF TRANSPORTATION

50237

The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to Bell Textron Canada Limited Model 505 helicopters, with serial numbers 65011 through 65023
inclusive, 65025 through 65028
inclusive, 65030 through 65032
inclusive, 65034, and 65036 with relay panel assembly part number P/N SLS
075002107 installed. The NPRM
published in the Federal Register on May 25, 2021 86 FR 28038. In the NPRM, the FAA proposed to require replacing relay panel assembly part number P/N SLS075002107 with relay panel assembly P/N SLS075
002109. The NPRM also proposed to prohibit installing relay panel assembly P/N SLS075002107 on any helicopter. The NPRM was prompted by Canadian AD CF201736, dated December 15, 2017 Canadian AD CF
201736, issued by Transport Canada, which is the aviation authority for Canada, to correct an unsafe condition for Bell Helicopter Textron Canada Limited BHTCL now Bell Textron Canada Limited Model 505 helicopters serial numbers 65011 through 65023, 65025 through 65028, 65030 through 65032, 65034, and 65036. Transport Canada advises of three occurrences of metallic debris in the engine oil lubrication system of the Model 505
helicopter causing the Garmin Engine Airframe GEA 12 VDC reference voltage to be shorted to ground. This short to ground results in loss of display of important flight information including the main rotor rotations per minute Nr, fuel quantity, and transmission oil pressure and temperature, and the generator voltage and ammeter parameters are marked invalid with a red X on the primary flight display PFD and the multifunction display MFD. This condition, if not addressed, could result in loss of caution, advisory, and system performance indications for multiple helicopter systems, particularly when
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