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Federal Register / Vol. 86, No. 138 / Thursday, July 22, 2021 / Rules and Regulations
procedures the Administrator finds necessary for safety in air commerce.
This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.
Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government.
For the reasons discussed above, I
certify that this AD:
1 Is not a significant regulatory action under Executive Order 12866, 2 Will not affect intrastate aviation in Alaska, and 3 Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

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

20211503 Gulfstream Aerospace Corporation: Amendment 3921650;
Docket No. FAA20210156; Project Identifier AD202001594T.

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a Effective Date This airworthiness directive AD is effective August 26, 2021.
b Affected ADs None.
c Applicability This AD applies to Gulfstream Aerospace Corporation Model GVIIG500 airplanes, serial numbers 72001 through 72085, certificated in any category.

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d Subject Joint Aircraft System Component JASC
Code 5753, Trailing Edge Flaps.
e Unsafe Condition This AD results from flap yoke fittings with design features that cause decreased fatigue life. The FAA is issuing this AD to prevent failure of the flap yoke fitting. The unsafe condition, if not addressed, could result in failure of the flap yoke fitting during flap transition, which could cause the flaps to stop moving. This, combined with additional failures in the flap actuator force limiter or flap yoke actuator disconnect, could result in asymmetric flap positions leading to a loss of airplane control.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 Within 24 months after the effective date of this AD or within 500 flight cycles after the effective date of this AD, whichever occurs first, replace each flap yoke fitting assembly by following Sections III.A.2
through III.D of the Modification Instructions in Gulfstream GVIIG500 Aircraft Service Change No. 032, Initial Issue, dated November 20, 2020.
2 Within 24 months after the effective date of this AD, revise the existing Airworthiness Limitations section of the Instructions for Continued Airworthiness or aircraft inspection program for your airplane by establishing a life limit of 20,000 flight cycles for each flap yoke fitting part number 72P5755095A001, 72P5755096A001, 72P5755097A001, and 72P5755098A001.
Note 1 to paragraph g2: Section 051010 of Gulfstream Aerospace GVII
G500 Aircraft Maintenance Manual Document Number GACACGVIIG500
AMM0001, Revision 7, dated December 15, 2020, contains the life limit in paragraph g2 of this AD.
h Alternative Methods of Compliance AMOCs 1 The Manager, Atlanta 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 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.
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.
3 For service information that contains steps that are labeled as Required for Compliance RC, the following provisions apply.
i The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. An AMOC is required for any deviations to RC steps, including substeps and identified figures.

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ii Steps not labeled as RC may be deviated from using accepted methods in accordance with the operators maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition.
i Related Information For more information about this AD, contact Jeffrey Johnson, Aviation Safety Engineer, Atlanta ACO Branch, FAA, 1701
Columbia Ave., College Park, GA 30337;
phone: 404 4745554; fax: 404 4745606;
email: jeffrey.d.johnson@faa.gov.
j 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.
i Gulfstream GVIIG500 Aircraft Service Change No. 032, Initial Issue, dated November 20, 2020.
ii Reserved 3 For Gulfstream Aerospace Corporation service information identified in this AD, contact Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, GA 31402; phone: 800 8104853;
email: pubs@gulfstream.com; website:
https www.gulfstream.com/en/customersupport/.
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: fedreg.legal@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on July 15, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202115473 Filed 72121; 8:45 am BILLING CODE 491013P

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