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Federal Register / Vol. 86, No. 46 / Thursday, March 11, 2021 / Proposed Rules
1 Bell Model 206B, serial number S/N
004 through 4690 inclusive, including helicopters converted from Model 206A; and Note 1 to paragraph a1: Helicopters with a 206B3 designation are Model 206B
helicopters.
2 Bell Model 206L, S/N 45001 through 45153 inclusive, and 46601 through 46617
inclusive.
b 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.
c Affected ADs This AD supersedes AD 20132013, Amendment 3917619 78 FR 66252, November 5, 2013.

g Alternative Methods of Compliance AMOCs
d Comments Due Date The FAA must receive comments by April 26, 2021.

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e Compliance You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
f Required Actions Within 25 hours time-in-service:
1 For Bell Model 206B helicopters:
i Revise the existing Rotorcraft Flight Manual RFM for your helicopter by inserting Section 1, Operating Limitations, page 12A, of Bell Model 206B RFM BHT
206BFM1, Revision B54, dated May 30, 2018 BHT206BFM1 or Section 1, Limitations, page 15, of Bell Model 206B3
RFM BHT206B3FM1, Revision 17, dated May 30, 2018 BHT206B3FM1, as applicable to your helicopter. Inserting a different document with Steady-state operation information identical to page 1
2A of BHT206BFM1 or page 15 of BHT
206B3FM1, 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 28 of BHT206BFM1 or Section 2, Normal Procedures, page 210 of BHT206B3FM1, as applicable to your helicopter. Inserting a different document with Continuous Operation information identical to page 28 of BHT206BFM1 or page 210 of BHT206B3FM1, as applicable to your helicopter, is acceptable for compliance with the requirements of this paragraph.
iii Remove placard part number P/N
230075213121, if installed.
iv Install placard P/N 230075213129
or placard P/N 230075213131 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 14B, of Bell Model 206L
RFM BHT206LFM1, Revision 31, dated May 30, 2018 BHT206LFM1. Inserting a different document with Steady-state operation information identical to page 1

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4B of BHT206LFM1 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 210 of BHT206LFM1.
Inserting a different document with Continuous Operation information identical to page 210 of BHT206LFM1 is acceptable for compliance with the requirements of this paragraph.
iii Remove placard P/N 230075213
123, if installed.
iv Install placard P/N 230075213129
or placard P/N 230075213131 on the instrument panel below the dual tachometer.

1 The Manager, International Validation Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Michael Hughlett, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 8172225889; email 9-AVS-AIR-730AMOC@faa.gov.
2 For operations conducted under a 14
CFR part 119 operating certificate or under 14 CFR part 91, subpart K, the FAA suggests that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office before operating any aircraft complying with this AD through an AMOC.
h Additional Information 1 Bell Alert Service Bulletin ASB 206
07115, Revision D, and ASB 206L07146, Revision C, each dated July 9, 2018, which are not incorporated by reference, contain additional information about the subject of this AD. For a copy of this service information, contact Bell Textron Canada Limited, 12,800 Rue de lAvenir, Mirabel, Quebec J7J 1R4; telephone 4504372862 or 8003638023; 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 6N
321, Fort Worth, TX 76177.
2 The subject of this AD is addressed in Transport Canada AD No. CF201823, dated August 22, 2018. You may view the Transport Canada AD on the internet in the AD Docket at https www.regulations.gov.
i Subject Joint Aircraft Service Component JASC
Code: 7250, Turbine Section.
Issued on January 27, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202105093 Filed 31021; 8:45 am BILLING CODE 491013P

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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20201171; Product Identifier 2017SW124AD
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Deutschland GmbH
Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for all Airbus Helicopters Deutschland GmbH
Model MBBBK 117 C2 and Model MBBBK 117 D2 helicopters. This proposed AD was prompted by a determination that a life limit for the adapter forward FWD of the outboard load system, repetitive inspections of other components of that system, and for certain helicopters, a modification of the outboard load system, are necessary to address the unsafe condition. This proposed AD would require a modification of the outboard load system for certain helicopters, repetitive inspections of the outboard load system and its components for any defect including cracking, damage, corrosion, and incorrect installation and applicable corrective actions, and implementation of a new life limit for the FWD adapter, as specified in a European Aviation Safety Agency EASA AD, which is proposed for incorporation by reference IBR. The FAA is proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by April 26, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 2024932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays.
For material that is proposed for IBR
in this AD, contact the EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000;
SUMMARY:

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