Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes, 30398-30399 [2021-11813]

Download as PDF 30398 Federal Register / Vol. 86, No. 108 / Tuesday, June 8, 2021 / Proposed Rules any cracking is detected during any inspection, repair before further flight using a method approved by the Manager, International Validation Branch, FAA. For a repair method to be approved by the Manager, International Validation Branch, as required by this paragraph, the Manager’s approval letter must specifically refer to this AD. (5) Where the service information referred to in EASA AD 2021–0099 specifies to perform a visual inspection for cracking on the ‘‘RH side of spar (a)’’ and ‘‘if you are not sure’’ remove the rear and the tail rotor gear box (TGB) fairings to perform a detailed inspection and do a dye-penetrant inspection, those actions are required by this AD if any crack indication (e.g., paint chips, dents, or swelling) is found during any inspection done without removing the rear and the TGB fairings. (6) Where the service information referred to in EASA AD 2021–0099 specifies to perform a visual check for cracks in the ‘‘spars (a) of the top and bottom fins’’ and ‘‘if you are not sure’’ do a dye-penetrant inspection, the dye-penetrant inspection is required by this AD if any crack indication (e.g., paint chips, dents, or swelling) is found during any visual check (inspection). (7) Where the service information referred to in EASA AD 2021–0099 specifies to check the integrity of the two thrust pad attachment screws for damage, for this AD, damage includes loosening, deformation, and nicks. (i) Special Flight Permit Special flight permits, as described in 14 CFR 21.197 and 21.199, are prohibited. jbell on DSKJLSW7X2PROD with PROPOSALS (j) 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 (k)(2) 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. (k) Related Information (1) For EASA AD 2021–0099, contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this EASA AD on the EASA website at https:// ad.easa.europa.eu. You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222–5110. This material may be found in the AD docket on the internet at https://www.regulations.gov VerDate Sep<11>2014 16:16 Jun 07, 2021 Jkt 253001 by searching for and locating Docket No. FAA–2021–0453. (2) For more information about this AD, contact Kathleen Arrigotti, Program Manager, Large Aircraft Section, International Validation Branch, Compliance & Airworthiness Division, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax (206) 231–3218; email kathleen.arrigotti@faa.gov. Issued on June 2, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–11965 Filed 6–7–21; 8:45 am] any comments received, and other information. The street address for Docket Operations is U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Myles Jalalian, Aviation Safety Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: (404) 474–5572; fax: (404) 474–5606; email: myles.jalalian@ faa.gov. SUPPLEMENTARY INFORMATION: BILLING CODE 4910–13–P Background DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [FAA Docket No. FAA–2020–0994; Project Identifier AD–2020–00687–T] RIN 2120–AA64 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 GVII–G600 airplanes. The NPRM was prompted by a report that a failure mode in the data concentration network (DCN) software causes the pitch attitude value to freeze on the primary flight display (PFD) for up to 20 seconds. The NPRM proposed to require updating the DCN and flight deck master operating system (MOS) software. 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. DATES: As of June 8, 2021, the proposed rule, which published in the Federal Register on February 23, 2021 (86 FR 10875), is withdrawn. ADDRESSES: SUMMARY: Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2020–0994; 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, the regulatory evaluation, PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 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 GVII–G600 airplanes. The NPRM published in the Federal Register on February 23, 2021 (86 FR 10875). The NPRM was prompted by a report of a failure mode in the DCN software that causes pitch attitude value to freeze on the PFD for up to 20 seconds, which results in temporarily incorrect pitch indications. The effect is evident only if the pitch of the airplane changes during the 20 second reset window. After 20 seconds, the system returns to normal. The standby flight display and heads up display are unaffected by this failure mode and continue to display the correct pitch attitude. However, there is not an alert or annunciation that informs the flight crew of a stale (frozen) pitch display or potentially misleading flight information. The NPRM proposed to require installing the MOS software update part number EB60001034–0106, updating the DCN software level to version 10.10.12 in support of the MOS software update, and operationally checking the installations. Incorrect pitch indications could result in the loss of control of the airplane during certain phases of flight during instrument meteorological conditions. Actions Since the NPRM Was Issued After issuance of the NPRM, the FAA received a comment from Gulfstream recommending the FAA withdraw the NPRM based on full fleet compliance. All Gulfstream Model GVII–G600 airplanes have corrected the unsafe condition by complying with the proposed software update. The FAA has determined that the unsafe condition has been removed from the fleet. In addition, since Gulfstream controls the software, it is unlikely the unsafe condition will be re-introduced. E:\FR\FM\08JNP1.SGM 08JNP1 Federal Register / Vol. 86, No. 108 / Tuesday, June 8, 2021 / Proposed Rules Based on the above information, the FAA has determined that AD action is not warranted and the proposal should be withdrawn. Withdrawal of the NPRM constitutes only such action and does not preclude the FAA from further rulemaking on this issue, nor does it commit the FAA to any course of action in the future. Regulatory Findings Since this action only withdraws an NPRM, it is neither a proposed AD nor a final rule. This action, therefore, is not covered under Executive Order 12866 or the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Withdrawal Accordingly, the notice of proposed rulemaking, which published in the Federal Register on February 23, 2021 (86 FR 10875), is withdrawn. Issued on May 28, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–11813 Filed 6–7–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2021–0418; Airspace Docket No. 21–ACE–12] Authority for This Rulemaking RIN 2120–AA66 Proposed Amendment of Class E Airspace; New Madrid, MO Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: This action proposes to amend Class E airspace extending upward from 700 feet above the surface at County Memorial Airport, New Madrid, MO. The FAA is proposing this action as a result of an airspace review caused by the decommissioning of the Malden Very High Frequency Omnidirectional Range collocated with Tactical Air Navigation (VORTAC) navigation aid as part of the VOR Minimum Operational Network (MON) Program. Controlled airspace is necessary for the safety and management of instrument flight rules (IFR) operations in the area. jbell on DSKJLSW7X2PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 16:16 Jun 07, 2021 Jkt 253001 Comments must be received on or before July 23, 2021. ADDRESSES: Send comments on this proposal to: The U.S. Department of Transportation, Docket Operations, 1200 New Jersey Avenue SE, West Building Ground Floor, Room W12–140, Washington, DC 20590–0001; Telephone: (800) 647–5527, or (202) 366–9826. You must identify the Docket No. FAA–2021–0418; Airspace Docket No. 21–ACE–12, at the beginning of your comments. You may also submit comments through the internet at https://www.regulations.gov. FAA Order 7400.11E Airspace Designations and Reporting Points, and subsequent amendments can be viewed online at https://www.faa.gov/air_ traffic/publications/. For further information, you can contact the Airspace Policy Group, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591; Telephone: (202) 267–8783. The Order is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of FAA Order 7400.11E at NARA, email fedreg.legal@nara.gov or go to https:// www.archives.gov/federal-register/cfr/ ibr-locations.html. FOR FURTHER INFORMATION CONTACT: John Fornito, Operations Support Group, Eastern Service Center, Federal Aviation Administration, 1701 Columbia Avenue, College Park, GA 30337; Telephone (404) 305–6364. SUPPLEMENTARY INFORMATION: DATES: The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. Subtitle I, Section 106 describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the agency’s authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority, as it amends Class E airspace in New Madrid, MO, to support IFR operations in the area. Comments Invited Interested persons are invited to comment on this proposed rulemaking by submitting such written data, views, or arguments, as they may desire. Comments that provide the factual basis PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 30399 supporting the views and suggestions presented are particularly helpful in developing reasoned regulatory decisions on the proposal. Comments are specifically invited on the overall regulatory, aeronautical, economic, environmental, and energy-related aspects of the proposal. Communications should identify both docket numbers (Docket No. FAA– 2021–0418 and Airspace Docket No. 21– ACE–12) and be submitted in triplicate to DOT Docket Operations (see ADDRESSES section for the address and phone number). You may also submit comments through the internet at https://www.regulations.gov. Persons wishing the FAA to acknowledge receipt of their comments on this action must submit with those comments a self-addressed stamped postcard on which the following statement is made: ‘‘Comments to FAA Docket No. FAA–2021–0418; Airspace Docket No. 21–ACE–12.’’ The postcard will be date/time stamped and returned to the commenter. All communications received before the specified closing date for comments will be considered before taking action on the proposed rule. The proposal contained in this document may be changed in light of the comments received. All comments submitted will be available for examination in the public docket both before and after the comment closing date. A report summarizing each substantive public contact with FAA personnel concerned with this rulemaking will be filed in the docket. Availability of NPRMs An electronic copy of this document may be downloaded through the internet at https://www.regulations.gov. Recently published rulemaking documents can also be accessed through the FAA’s web page at https:// www.faa.gov/air_traffic/publications/ airspace_amendments/. You may review the public docket containing the proposal, any comments received and any final disposition in person in the Dockets Office (see the ADDRESSES section for address and phone number) between 9:00 a.m. and 5:00 p.m., Monday through Friday, except federal holidays. An informal docket may also be examined between 8:00 a.m. and 4:30 p.m., Monday through Friday, except federal holidays at the office of the Eastern Service Center, Federal Aviation Administration, Room 350, 1701 Columbia Avenue, College Park, GA 30337. E:\FR\FM\08JNP1.SGM 08JNP1

Agencies

[Federal Register Volume 86, Number 108 (Tuesday, June 8, 2021)]
[Proposed Rules]
[Pages 30398-30399]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-11813]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[FAA Docket No. FAA-2020-0994; Project Identifier AD-2020-00687-T]
RIN 2120-AA64


Airworthiness Directives; Gulfstream Aerospace Corporation 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Proposed rule; withdrawal.

-----------------------------------------------------------------------

SUMMARY: 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 GVII-G600 
airplanes. The NPRM was prompted by a report that a failure mode in the 
data concentration network (DCN) software causes the pitch attitude 
value to freeze on the primary flight display (PFD) for up to 20 
seconds. The NPRM proposed to require updating the DCN and flight deck 
master operating system (MOS) software. 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.

DATES:  As of June 8, 2021, the proposed rule, which published in the 
Federal Register on February 23, 2021 (86 FR 10875), is withdrawn.

ADDRESSES: 

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2020-0994; 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, the 
regulatory evaluation, any comments received, and other information. 
The street address for Docket Operations is U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Myles Jalalian, Aviation Safety 
Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, 
GA 30337; phone: (404) 474-5572; fax: (404) 474-5606; email: 
[email protected].

SUPPLEMENTARY INFORMATION:

Background

    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 GVII-G600 airplanes. The NPRM published in the Federal Register 
on February 23, 2021 (86 FR 10875). The NPRM was prompted by a report 
of a failure mode in the DCN software that causes pitch attitude value 
to freeze on the PFD for up to 20 seconds, which results in temporarily 
incorrect pitch indications.
    The effect is evident only if the pitch of the airplane changes 
during the 20 second reset window. After 20 seconds, the system returns 
to normal. The standby flight display and heads up display are 
unaffected by this failure mode and continue to display the correct 
pitch attitude. However, there is not an alert or annunciation that 
informs the flight crew of a stale (frozen) pitch display or 
potentially misleading flight information.
    The NPRM proposed to require installing the MOS software update 
part number EB60001034-0106, updating the DCN software level to version 
10.10.12 in support of the MOS software update, and operationally 
checking the installations. Incorrect pitch indications could result in 
the loss of control of the airplane during certain phases of flight 
during instrument meteorological conditions.

Actions Since the NPRM Was Issued

    After issuance of the NPRM, the FAA received a comment from 
Gulfstream recommending the FAA withdraw the NPRM based on full fleet 
compliance. All Gulfstream Model GVII-G600 airplanes have corrected the 
unsafe condition by complying with the proposed software update. The 
FAA has determined that the unsafe condition has been removed from the 
fleet. In addition, since Gulfstream controls the software, it is 
unlikely the unsafe condition will be re-introduced.

[[Page 30399]]

    Based on the above information, the FAA has determined that AD 
action is not warranted and the proposal should be withdrawn.
    Withdrawal of the NPRM constitutes only such action and does not 
preclude the FAA from further rulemaking on this issue, nor does it 
commit the FAA to any course of action in the future.

Regulatory Findings

    Since this action only withdraws an NPRM, it is neither a proposed 
AD nor a final rule. This action, therefore, is not covered under 
Executive Order 12866 or the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Withdrawal

    Accordingly, the notice of proposed rulemaking, which published in 
the Federal Register on February 23, 2021 (86 FR 10875), is withdrawn.

    Issued on May 28, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-11813 Filed 6-7-21; 8:45 am]
BILLING CODE 4910-13-P
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