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Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Proposed Rules seal has between 3,751 and 4,249 cycles, inclusive, since being reconfigured, remove the part from service within 250 cycles after July 5, 2019 the effective date of AD 2019
1205, before accumulating 4,275 cycles since being reconfigured, within 1,500 cycles since the last FPI of the rotating air HPT front seal, or before further flight after the effective date of this AD, whichever occurs later, and replace with a part eligible for installation.
iii For all remaining CFM CFM565C
model turbofan engines, remove the rotating air HPT front seal from service before accumulating 4,000 cycles since being reconfigured, or within 50 cycles after the effective date of this AD, whichever occurs later.
3 For CFM565B or CFM567B model turbofan engines with an affected rotating air HPT front seal that has been operated in a CFM565C model turbofan engine since being reconfigured, remove the rotating air HPT front seal from service using the cycle limits in paragraph g2 of this AD.

information on the availability of this material at the FAA, call 781 2387759.

h Definition For the purpose of this AD, reconfigured occurs when a rotating air HPT front seal has been removed from the original HPT disk and re-assembled to a different HPT disk.

AGENCY:

i Installation Prohibition After the effective date of this AD, do not assemble any rotating air HPT front seal with greater than 0 cycles since new, having a S/
N listed in paragraph c of this AD onto a HPT disk unless it is the same S/N HPT disk on which it has previously been assembled.
j Alternative Methods of Compliance AMOCs 1 The Manager, ECO 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 certification office, send it to the attention of the person identified in Related Information. You may email your request to: ANE-AD-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 1 For more information about this AD, contact Christopher McGuire, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387120; fax: 781 2387199; email:
Chris.McGuire@faa.gov.
2 For service information identified in this AD, 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 referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For
VerDate Sep<11>2014

17:08 Mar 22, 2021

Jkt 253001

Issued on March 12, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202105600 Filed 32221; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20200881; Project Identifier 2018CE024AD
RIN 2120AA64

Airworthiness Directives; Piper Aircraft, Inc. Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
The FAA proposes to supersede Airworthiness Directive AD
790103, which applies to certain Piper Aircraft, Inc. Piper Model PA
36285 airplanes, and AD 832003, which applies to Piper Models PA36
285, PA36300, and PA36375
airplanes. AD 790103 requires repetitive inspections of the spar carry through assembly until it is replaced with a different part numbered spar carry through assembly. AD 832003
establishes life limits for the wing spar structural components. Since the FAA
issued AD 790103 and AD 832003, the FAA identified inspection and life limit requirements that were inadvertently omitted from those ADs.
This proposed AD would retain the requirements in AD 790103 and AD
832003 and require the spar carry through assembly inspection from AD
790103 for additional airplanes and add life limits for certain wing structural components previously omitted from AD 832003 for certain serial numbered airplanes. 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 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, M
SUMMARY:

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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 service information identified in this NPRM, contact Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, FL 32960;
phone: 772 5674361; website: https
www.piper.com. You may view this service information at the 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 3294148.
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20200881; 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 NPRM, any comments received, and other information. The street address for Docket Operations is listed above.
Dan McCully, Aviation Safety Engineer, FAA, Atlanta ACO Branch, 1701
Columbia Avenue, College Park, GA
30337; phone: 404 4745548; fax: 404
4745606; email: william.mccully@
faa.gov.

FOR FURTHER INFORMATION CONTACT:

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 the ADDRESSES section. Include Docket No. FAA20200881; Project Identifier 2018CE024AD. 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 amend the 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.

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