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Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Proposed Rules
the requirements in paragraph e1 of this AD have been completed.
f Alternative Methods of Compliance AMOCs 1 The Manager, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Daniel E. Moore, Aviation Safety Engineer, Denver, ACO
Branch, Compliance & Airworthiness Division, FAA, 26805 East 68th Ave., Denver, CO 80249; telephone 3033421086; email 9Denver-Aircraft-Cert@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.
g Additional Information The subject of this AD is addressed in Transport Canada AD No. CF2020212R1, dated August 19, 2020. You may view the Transport Canada AD on the internet at https www.regulations.gov in the AD
Docket.
h Subject Joint Aircraft Service Component JASC
Code: 2560, Emergency Equipment.
Issued on January 5, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202104200 Filed 32221; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Examining the AD Docket
14 CFR Part 39
Docket No. FAA20190597; Project Identifier 2019NE05AD
RIN 2120AA64

Airworthiness Directives; CFM
International, S.A. Turbofan Engines Federal Aviation Administration FAA, DOT.
ACTION: Supplemental notice of proposed rulemaking SNPRM.
AGENCY:

The FAA is revising a notice of proposed rulemaking NPRM that applied to certain CFM International, S.A. CFM CFM565B, CFM565C, and CFM567B model turbofan engines with a certain rotating air high-pressure turbine HPT front seal. This action revises the NPRM by requiring CFM56
5B or CFM567B model turbofan engines with an installed reconfigured rotating air HPT front seal, which was previously installed and operated in a CFM565C model turbofan engine, to
SUMMARY:

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17:08 Mar 22, 2021

follow the removal requirements for the CFM565C model turbofan engine. The FAA is proposing this airworthiness directive AD to address the unsafe condition on these products. Since these actions would impose an additional burden over those in the NPRM the agency is requesting comments on this SNPRM.
DATES: The FAA must receive comments on this SNPRM by May 7, 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: 202 4932251.
Mail: U.S. Department of Transportation, Docket Operations, M30, 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 service information identified in this SNPRM, contact CFM International, S.A., Aviation Operations Center, 1
Neumann Way, M/D Room 285, Cincinnati, OH 45125; phone: 877
4323272; email: aviation.fleetsupport@
ge.com. 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 2387759.

Jkt 253001

You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20190597; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the NPRM, this SNPRM, any comments received, and other information. The street address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT:
Christopher McGuire, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803;
phone: 781 2387120; fax: 781 238
7199; email: Chris.McGuire@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include Docket No.

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FAA20190597; Project Identifier 2019NE05AD at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may again revise this proposal because of those comments.
Except for Confidential Business Information CBI as described in the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to https
www.regulations.gov, including any personal information you provide. The agency will also post a report summarizing each substantive verbal contact received about this proposed AD.
Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner.
Under the Freedom of Information Act FOIA 5 U.S.C. 552, CBI is exempt from public disclosure. If your comments responsive to this SNPRM
contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this SNPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as PROPIN. The FAA
will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this SNPRM. Submissions containing CBI should be sent to Christopher McGuire, Aviation Safety Engineer, ECO
Branch, FAA, 1200 District Avenue, Burlington, MA 01803. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Background The FAA issued an NPRM to amend 14 CFR part 39 to supersede AD 2019
1205, Amendment 3919660 84 FR
28717, June 20, 2019, AD 201912
05. AD 20191205 applies to all CFM
CFM565B, CFM565C, and CFM567B
model turbofan engines with a certain rotating air HPT front seal. The NPRM
published in the Federal Register on October 23, 2019 84 FR 56709. The NPRM was prompted by cracks found in the rotating air HPT front seal. In the NPRM, the FAA proposed to require replacement of the affected rotating air
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