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Federal Register / Vol. 86, No. 119 / Thursday, June 24, 2021 / Rules and Regulations 39.13

Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20211011 The Boeing Company:
Amendment 3921544; Docket No.
FAA20210026 Project Identifier AD
202001164T.
a Effective Date This airworthiness directive AD is effective July 29, 2021.
b Affected ADs None.
c Applicability 1 This AD applies to all The Boeing Company Model 737100, 200, 200C, 300, 400, and 500 series airplanes, certificated in any category.
2 Installation of Supplemental Type Certificate STC ST01219SE does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST01219SE is installed, a change in product alternative method of compliance AMOC approval request is not necessary to comply with the requirements of 14 CFR
39.17.
d Subject Air Transport Association ATA of America Code 57, Wings.
e Unsafe Condition This AD was prompted by a report indicating that a crack was found on the splice angle flange that is attached to the station STA 540 bulkhead in the area between stringer 21 to stringer 22. The FAA
is issuing this AD to address any cracking in the splice angle, which could result in the inability of a principal structural element to sustain limit load and could adversely affect the structural integrity of the airplane; in addition, such cracking could lead to adjoining parts cracking and a potential fuel leak and consequent fire.

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f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 For airplanes identified as Group 1 in Boeing Alert Requirements Bulletin 737
57A1347 RB, dated July 29, 2020: Within 120
days after the effective date of this AD, inspect the airplane and do all applicable oncondition actions using a method approved in accordance with the procedures specified in paragraph i of this AD.
2 For airplanes identified as Group 2 in Boeing Alert Requirements Bulletin 737
57A1347 RB, dated July 29, 2020: Except as specified by paragraph h of this AD, at the applicable times specified in the Compliance paragraph of Boeing Alert Requirements Bulletin 73757A1347 RB, dated July 29, 2020, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 73757A1347 RB, dated July 29, 2020.

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Note 1 to paragraph g: Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 73757A1347, dated July 29, 2020, which is referred to in Boeing Alert Requirements Bulletin 73757A1347 RB, dated July 29, 2020.
h Exceptions to Service Information Specifications 1 Where Boeing Alert Requirements Bulletin 73757A1347 RB, dated July 29, 2020, uses the phrase the original issue date of Requirements Bulletin 73757A1347 RB, this AD requires using the effective date of this AD.
2 Where Boeing Alert Requirements Bulletin 73757A1347 RB, dated July 29, 2020, specifies contacting Boeing for repair instructions: This AD requires doing the repair using a method approved in accordance with the procedures specified in paragraph i of this AD.
i 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 paragraph j1 of this AD. Information may be emailed to: 9ANM-LAACO-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.
j Related Information 1 For more information about this AD, contact Wayne Ha, Aerospace Engineer, Airframe Section, FAA, Los Angeles ACO
Branch, 3960 Paramount Boulevard, Lakewood, CA 907124137; phone: 562627
5238; fax: 5626275210; email: Wayne.Ha@
faa.gov.
2 Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs k3 and 4 of this AD.
k Material Incorporated by Reference 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 the AD specifies otherwise.

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i Boeing Alert Requirements Bulletin 73757A1347 RB, dated July 29, 2020.
ii Reserved 3 For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services C&DS, 2600 Westminster Blvd., MC 110SK57, Seal Beach, CA 907405600;
telephone 5627971717; internet https
www.myboeingfleet.com.
4 You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on April 30, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202113122 Filed 62321; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210254; Project Identifier MCAI202000481R; Amendment 3921595; AD 20211208
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Deutschland GmbH AHD
Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for all Airbus Helicopters Deutschland GmbH
AHD Model MBBBK 117 D2
helicopters. This AD was prompted by reports of chafing marks on the wiring harness behind the middle side panels in the area of the front passenger PAX
panels. This AD requires inspecting, modifying, and rerouting the wiring harness, as specified in a European Union Aviation Safety Agency EASA
AD, which is incorporated by reference.
The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective July 29, 2021.
The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD
as of July 29, 2021.
SUMMARY:

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