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Federal Register / Vol. 86, No. 139 / Friday, July 23, 2021 / Proposed Rules accordance with the Accomplishment Instructions, Part II, steps 4. through 12., of BASB 4291950, Revision B.
i Terminating Action Replacement of a bellcrank assembly with a new part never installed on a helicopter or has accumulated zero hours TIS is terminating action for the requirements of this AD for that helicopter only.

Issued on July 15, 2021.
Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202115534 Filed 72221; 8:45 am BILLING CODE 491013P

k 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 International Validation Branch, send it to the attention of the person identified in paragraph l1 of this AD.
Information may be emailed to: 9-AVS-AIR730-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.

khammond on DSKJM1Z7X2PROD with PROPOSALS

l Related Information 1 For more information about this AD, contact Andrea Jimenez, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY 11590;
telephone 516 2287330; email andrea.jimenez@faa.gov.
2 For service information identified in this AD, contact Bell Textron Canada Limited, 12,800 Rue de lAvenir, Mirabel, Quebec J7J 1R4, Canada; telephone 1450
4372862 or 18003638023; fax 1450
4330272; email productsupport@
bellflight.com; or at https
www.bellflight.com/support/contact-support.
You may view this referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101
Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 222
5110.
3 The subject of this AD is addressed in Transport Canada AD CF202011, dated April 16, 2020. You may view the Transport Canada AD on the internet at https
www.regulations.gov in Docket No. FAA
20210575.

VerDate Sep<11>2014

16:27 Jul 22, 2021

Jkt 253001

FOR FURTHER INFORMATION CONTACT:

Jared Meyer, Aviation Safety Engineer, Atlanta ACO Branch, FAA, 1701
Columbia Avenue, College Park, GA
30337; phone: 404 4745534; fax: 404
4745605; email: jared.meyer@faa.gov.
SUPPLEMENTARY INFORMATION:

DEPARTMENT OF TRANSPORTATION

j Credit for Previous Actions This paragraph provides credit for actions required by paragraph g of this AD, if those actions were performed before the effective date of this AD using the service information identified in paragraph j1 or 2 of this AD.
1 Bell Alert Service Bulletin 4291950, dated November 27, 2019.
2 Bell Alert Service Bulletin 4291950, Revision A, dated December 2, 2019.

38949

Background
As of July 23, 2021, the proposed rule, which published in the Federal Register on July 28, 2020 85 FR 45345, is withdrawn.
ADDRESSES:

The FAA issued an NPRM that proposed to amend 14 CFR part 39 by adding an AD that would apply to certain serial-numbered Gulfstream Model GVIIG500 airplanes. The NPRM
published in the Federal Register on July 28, 2020 85 FR 45345. The NPRM
was prompted by a report of the affected airplanes exhibiting a disparity between the fuel quantities displayed on the overhead panel touch screens and the fuel quantities displayed on the touch screen controllers. An investigation revealed two known failure conditions that the Model GVIIG500 FQMS does not properly detect and report to the crew. These failure conditions are fuel quantity probe drift and an FQMS overcurrent condition, which could result in erroneous and misleading fuel quantity indications and could also result in erroneous and misleading fuel imbalance indications. These conditions could cause a false annunciation of a fuel imbalance, a failure to annunciate an actual fuel imbalance, and a condition where the actual fuel quantity is less than or greater than the indicated fuel quantity. The FQMS software logic does not properly detect or compensate for these failure conditions. This condition, if not corrected, could result in fuel starvation during flight, performance impacts of the airplane having more fuel than indicated, and a roll moment due to a fuel imbalance.
The NPRM proposed to require incorporating operating limitations into the AFM until the fuel quantity signal conditioner FQMS software is updated to version 10003421300119.03.

Examining the AD Docket
Actions Since the NPRM Was Issued
You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20200713; 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 AD action, any comments received, and other information. The street 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.

After issuance of the NPRM, the FAA
determined that all Gulfstream Model GVIIG500 airplanes are in compliance with the proposed software update, and the unsafe condition has been removed from the fleet. In addition, since Gulfstream controls the software, it is unlikely the unsafe condition will be reintroduced.
Based on the above information, the FAA has determined that AD action is not warranted and the proposal should be withdrawn.

Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20200713; Product Identifier 2019CE061AD
RIN 2120AA64

Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Proposed rule; withdrawal.
AGENCY:

The FAA is withdrawing a notice of proposed rulemaking NPRM
that proposed to adopt a new airworthiness directive AD for certain Gulfstream Aerospace Corporation Gulfstream Model GVIIG500
airplanes. The NPRM was prompted by a report of a fuel quantity disparity between the overhead panel touch screens and the touch screen controllers. The NPRM proposed to require incorporating operating limitations into the airplane flight manual AFM until the fuel quantity management system FQMS software is updated. Since issuance of the NPRM, the FAA has determined that there is not an unsafe condition because all affected airplanes have updated software. Accordingly, the NPRM is withdrawn.

SUMMARY:

DATES:

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