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Federal Register / Vol. 86, No. 172 / Thursday, September 9, 2021 / Rules and Regulations h Alternative Methods of Compliance AMOCs 1 The Manager, International Validation 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 or email: 9AVS-AIR-730-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.
i Related Information 1 For more information about this AD, contact Penelope Trease, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 26805 E 68th Avenue, Denver, CO
80249; phone: 303 3421094; email:
penelope.trease@faa.gov.
2 Refer to European Aviation Safety Agency EASA AD 20180153, dated July 19, 2018, for more information. You may examine the EASA AD in the AD docket at https www.regulations.gov by searching for and locating it in Docket No. FAA2021
0502.

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j Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference 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.
i Britten-Norman Service Bulletin Number SB 363, Issue 3, dated May 23, 2018.
ii Britten-Norman Service Bulletin Number SB 364, Issue 3, dated May 23, 2018.
3 For service information identified in this AD, contact Britten-Norman Aircraft Limited, Commodore House, Mountbatten Business Centre, Millbrook Road East, Southampton SO15 1HY, United Kingdom;
phone: + 44 20 3371 4000; fax: + 44 20 3371
4001; email: info@bnaircraft.com; website:
https britten-norman.com/approvalstechnical-publications/.
4 You may view this service information at 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.
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: fr.inspection@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.

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Issued on August 17, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202119302 Filed 9821; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210459; Project Identifier MCAI202100129T; Amendment 3921697; AD 20211714
RIN 2120AA64

Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Gulfstream Aerospace LP Model Gulfstream G280 airplanes. This AD was prompted by a report that during fullscale fatigue testing, a crack was found in the area of the attachment of the wing rib 0 to the front spar. This AD requires non-destructive testing on the forward front spar vertical stiffener and rib 0
for any cracking, installation of a doubler to the forward front spar and rib 0 attachment, and repair if necessary, as specified in a Civil Aviation Authority of Israel CAAI 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 October 14, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of October 14, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact the CAAI, P.O. Box 1101, Golan Street, Airport City, 70100, Israel; telephone 97239774665; fax 97239774592;
email aip@mot.gov.il. You may find this IBR material on the CAAI website at https www.caa.gov.il. You may view this material 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. It is also available in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0459.
SUMMARY:

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Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210459; 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 final rule, the mandatory continuing airworthiness information MCAI, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Tom Rodriguez, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198;
telephone and fax 2062313226; email Tom.Rodriguez@faa.gov.

FOR FURTHER INFORMATION CONTACT:

Airworthiness Directives; Gulfstream Aerospace LP Airplanes
PO 00000

50451

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SUPPLEMENTARY INFORMATION:

Background The CAAI, which is the aviation authority for Israel, has issued CAAI AD
I5720200601, dated January 27, 2021 CAAI AD I5720200601 also referred to as the MCAI, to correct an unsafe condition for certain Gulfstream Aerospace LP Model Gulfstream G280
airplanes.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Gulfstream Aerospace LP Model Gulfstream G280 airplanes.
The NPRM published in the Federal Register on June 10, 2021 86 FR 30819.
The NPRM was prompted by a report that during full-scale fatigue testing, a crack was found in the area of the attachment of the wing rib 0 to the front spar. The NPRM proposed to require non-destructive testing on the forward front spar vertical stiffener and rib 0
for any cracking, installation of a doubler to the forward front spar and rib 0 attachment, and repair if necessary, as specified in CAAI AD I
5720200601.
The FAA is issuing this AD to address any cracking at the area of the wing rib 0 to the front spar, which could affect the structural integrity of the wing. See the MCAI for additional background information.
Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the cost to the public.

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