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Federal Register / Vol. 86, No. 172 / Thursday, September 9, 2021 / Proposed Rules d Subject Air Transport Association ATA of America Code 57, Wings.
e Unsafe Condition This AD was prompted by reports of bolt rotation in the engine drag fitting joint and fastener heads and cracks found in the skin of the fastener holes, and the need to reduce the compliance time for certain groups. The FAA is issuing this AD to address cracking in the wing upper skin and forward drag fittings, which could lead to a compromised upper link and reduced structural integrity of the engine strut, and possible separation of a strut and engine from the airplane during flight.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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g New Required Actions Except as specified by paragraph h of this AD: At the applicable times specified in the Compliance paragraph of Boeing Alert Requirements Bulletin 75757A0073 RB, Revision 2, dated March 1, 2021, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 75757A0073 RB, Revision 2, dated March 1, 2021.
Note 1 to paragraph g: Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 75757A0073, Revision 2, dated March 1, 2021, which is referred to in Boeing Alert Requirements Bulletin 75757A0073
RB, Revision 2, dated March 1, 2021.
h Exceptions to Service Information Specifications 1 Where Boeing Alert Requirements Bulletin 75757A0073 RB, Revision 2, dated March 1, 2021 uses the phrase the Original Issue date of Requirements Bulletin 757
57A0073 RB, this AD requires using September 10, 2018 the effective date of AD
20181605, Amendment 3919345 83 FR
38250, August 6, 2018.
2 Where the Effectivity paragraph and the Condition and Compliance Time columns of the tables in the Compliance paragraph of Boeing Alert Requirements Bulletin 757
57A0073 RB, Revision 2, dated March 1, 2021, uses the phrase the Revision 1 date of Requirements Bulletin 75757A0073 RB date of this service bulletin, this AD requires using January 14, 2021 the effective date of AD 20202117.
3 Where the Effectivity paragraph and the Condition and Compliance Time columns of the tables in the Compliance paragraph of Boeing Alert Requirements Bulletin 757
57A0073 RB, Revision 2, dated March 1, 2021, uses the phrase the Revision 2 date of Requirements Bulletin 75757A0073 RB, this AD requires using the effective date of this AD.
4 Where Boeing Alert Requirements Bulletin 75757A0073 RB, Revision 2, dated March 1, 2021, specifies contacting Boeing for repair instructions: This AD requires doing the repair using a method approved in
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accordance with the procedures specified in paragraph j of this AD.

availability of this material at the FAA, call 2062313195.

i Credit for Previous Actions 1 This paragraph provides credit for the actions specified in paragraph g of this AD, except for the open-hole high frequency eddy current inspections at fastener locations 11
18, if those actions were performed before the effective date of this AD using Boeing Alert Requirements Bulletin 75757A0073 RB, dated July 14, 2017.
2 This paragraph provides credit for the actions specified in paragraph g of this AD, if those actions were performed before the effective date of this AD using Boeing Alert Requirements Bulletin 75757A0073 RB, Revision 1, dated August 1, 2019. This service information is not incorporated by reference in this AD.

Issued on August 12, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.

j Alternative Methods of Compliance AMOCs 1 The Manager, Los Angeles ACO 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 responsible Flight Standards 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.
Information may be emailed to: 9-ANMLAACO-AMOC-Requests@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
3 An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing Company Organization Designation Authorization ODA that has been authorized by the Manager, Los Angeles ACO Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD.
4 AMOCs approved for AD 20202117
are approved as AMOCs for the corresponding provisions of Boeing Alert Requirements Bulletin 75757A0073 RB, Revision 2, dated March 1, 2021, that are required by paragraph g of this AD.

FR Doc. 202119460 Filed 9821; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20201073; Project Identifier MCAI202001303A
RIN 2120AA64

Airworthiness Directives; Embraer S.A.
Type Certificate Previously Held by Empresa Brasileira de Aeronautica S.A. Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to supersede Airworthiness Directive AD
20201208, which applies to all Embraer S.A. Model EMB505
airplanes. AD 20201208 requires inspections of the mass-balance weights of the elevators, ailerons, and rudder flight control surfaces and their attachment parts, and corrective actions if necessary, and revising the airworthiness limitation section of the maintenance manual or instructions for continued airworthiness to incorporate new airworthiness limitations. Since AD
20201208 was issued, the FAA has determined that new applicable airplane serial numbers and new criteria for the replacement of affected parts must be required in order to address the unsafe condition. This proposed AD would retain the actions required by AD 2020
k Related Information 1208 and would require, for certain 1 For more information about this AD, airplanes, cleaning and weighing certain contact David Truong, Aerospace Engineer, mass-balances and installation or Airframe Section, FAA, Los Angeles ACO
replacement, as applicable; and for Branch, 3960 Paramount Boulevard, Lakewood, CA 907124137; phone: 562627 certain other mass-balances for certain 5224; fax: 5626275210; email:
airplanes, replacement of those massdavid.truong@faa.gov.
balances. The FAA is proposing this AD
2 For service information identified in to address the unsafe condition on these this AD, contact Boeing Commercial products.
Airplanes, Attention: Contractual & Data DATES
: The FAA must receive comments Services C&DS, 2600 Westminster Blvd., on this proposed AD by October 25, MC 110SK57, Seal Beach, CA 907405600;
telephone 5627971717; internet https
2021.

www.myboeingfleet.com. You may view this referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the
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SUMMARY:

You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:

ADDRESSES:

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