Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes, 60606-60609 [2023-18690]
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60606
Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Proposed Rules
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–1805; Project
Identifier AD–2023–00019–T]
RIN 2120–AA64
Airworthiness Directives; Gulfstream
Aerospace Corporation Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to
supersede Airworthiness Directive (AD)
2020–23–04, which applies to certain
Gulfstream Aerospace Corporation
Model GVII–G500 and GVII–G600
airplanes. AD 2020–23–04 requires
revising the existing airplane flight
manual (AFM) and airplane
maintenance manual (AMM) to include
information pertaining to the fuel boost
pump. Since the FAA issued AD 2020–
23–04, an inspection for a missing or
misplaced impeller shaft key of suspect
fuel boost pumps has been developed
that would terminate the actions of AD
2020–23–04. This proposed AD would
retain the requirements of AD 2020–23–
04 and require inspecting affected fuel
boost pumps for proper installation of
the impeller shaft key, marking affected
fuel boost pumps that pass that
inspection, and replacing fuel boost
pumps that fail. This proposed AD
would also limit installation of affected
fuel boost pumps. The FAA is proposing
this AD to address the unsafe condition
on these products.
DATES: The FAA must receive comments
on this proposed AD by October 20,
2023.
SUMMARY:
You may send comments,
using the procedures found in 14 CFR
11.43 and 11.45, by any of the following
methods:
• Federal eRulemaking Portal: Go to
regulations.gov. Follow the instructions
for submitting comments.
• Fax: 202–493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2023–1805; or in person at
Docket Operations between 9 a.m. and
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ADDRESSES:
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5 p.m., Monday through Friday, except
Federal holidays. The AD docket
contains this NPRM, any comments
received, and other information. The
street address for Docket Operations is
listed above.
Material Incorporated by Reference:
• For service information identified
in this NPRM, contact Gulfstream
Aerospace Corporation, Technical
Publications Dept., P.O. Box 2206,
Savannah, GA 31402–2206; telephone
800–810–4853; email pubs@
gulfstream.com; website
gulfstream.com/en/customer-support.
• 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 206–231–3195. It is also available
on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2023–
1805.
FOR FURTHER INFORMATION CONTACT:
Jared Meyer, Aviation Safety Engineer,
FAA, 1701 Columbia Avenue, College
Park, GA 30337; phone: 404–474–5534;
email: 9-ASO-ATLACO-ADs@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written relevant data, views, or
arguments about this proposal. Send
your comments to an address listed
under ADDRESSES. Include ‘‘Docket No.
FAA–2023–1805; Project Identifier AD–
2023–00019–T’’ at the beginning of your
comments. The most helpful comments
reference a specific portion of the
proposal, explain the reason for any
recommended change, and include
supporting data. The FAA will consider
all comments received by the closing
date and may amend the proposal
because of those comments.
Except for Confidential Business
Information (CBI) as described in the
following paragraph, and other
information as described in 14 CFR
11.35, the FAA will post all comments
received, without change, to
regulations.gov, including any personal
information you provide. The agency
will also post a report summarizing each
substantive verbal contact received
about this proposed AD.
Confidential Business Information
CBI is commercial or financial
information that is both customarily and
actually treated as private by its owner.
Under the Freedom of Information Act
(FOIA) (5 U.S.C. 552), CBI is exempt
from public disclosure. If your
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comments responsive to this NPRM
contain commercial or financial
information that is customarily treated
as private, that you actually treat as
private, and that is relevant or
responsive to this NPRM, it is important
that you clearly designate the submitted
comments as CBI. Please mark each
page of your submission containing CBI
as ‘‘PROPIN.’’ The FAA will treat such
marked submissions as confidential
under the FOIA, and they will not be
placed in the public docket of this
NPRM. Submissions containing CBI
should be sent to Jared Meyer, Aviation
Safety Engineer, FAA, 1701 Columbia
Avenue, College Park, GA 30337; phone:
404–474–5534; email: 9-ASO-ATLACOADs@faa.gov. Any commentary that the
FAA receives that is not specifically
designated as CBI will be placed in the
public docket for this rulemaking.
Background
The FAA issued AD 2020–23–04,
Amendment 39–21320 (85 FR 71232,
November 9, 2020) (AD 2020–23–04),
for certain Gulfstream Aerospace
Corporation Model GVII–G500 and
GVII–G600 airplanes. AD 2020–23–04
was prompted by a report of
misassembled impellers on the shaft of
the fuel boost pump during production.
AD 2020–23–04 requires revising the
existing AFM and AMM to include
information pertaining to the fuel boost
pump. The agency issued AD 2020–23–
04 to prevent the ignition of flammable
vapors in the fuel tank as a result of
frictional heating or sparks caused by a
dislodged impeller shaft key inside the
fuel boost pump, which, if the pump
were to run dry, could result in a fuel
tank fire or fuel tank explosion.
Actions Since AD 2020–23–04 Was
Issued
The preamble to AD 2020–23–04
specifies that the FAA considers the
requirements ‘‘interim action’’ and that
the manufacturer is developing a
modification that will address the
unsafe condition. That AD explains that
the FAA might consider further
rulemaking if a modification is
developed, approved, and available. The
manufacturer now has developed
inspection instructions for fuel boost
pumps to determine correct installation
of the impeller shaft key, including
replacement or re-identification, as
applicable, that will terminate the
requirement to update the AFM and
AMM, and the FAA has determined that
further rulemaking is indeed necessary;
this proposed AD follows from that
determination.
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Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Proposed Rules
FAA’s Determination
The FAA is issuing this NPRM after
determining that the unsafe condition
described previously is likely to exist or
develop on other products of the same
type design.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Gulfstream GVII–
G500 Customer Bulletin No. 069 and
Gulfstream GVII–G600 Customer
Bulletin No. 037, both Revision A, both
dated February 2, 2023, which describe
procedures for inspecting affected fuel
boost pumps for proper installation of
the impeller shaft key, marking affected
fuel boost pumps that pass that
inspection, and replacing fuel boost
pumps that fail. These documents are
distinct since they apply to different
airplane models.
This proposed AD would also require
the following Gulfstream service
information, which the Director of the
Federal Register approved for
incorporation on November 24, 2020 (85
FR 71232).
• GVII–G500 Maintenance Manual
12–13–01 Defueling Procedure-Defuel,
dated August 31, 2020.
• GVII–G500 Maintenance Manual
28–26–04 Fuel Boost Pump-Prime,
dated August 31, 2020.
• Gulfstream Aerospace GVII–G500
Airplane Flight Manual Supplement No.
GVII–G500 (Issue 1)–2020–05, dated
September 8, 2020.
• Gulfstream Aerospace GVII–G500
Airplane Flight Manual Supplement No.
GVII–G500–2020–06, dated September
8, 2020.
• GVII–G600 Maintenance Manual
28–26–05 Fuel Boost Pump CanisterRemoval/Installation, dated August 31,
2020.
• GVII–G600 Maintenance Manual
12–13–01 Defueling Procedure-Defuel,
dated August 31, 2020.
• GVII–G600 Maintenance Manual
28–26–04 Fuel Boost Pump-Prime,
dated August 31, 2020.
• GVII–G600 Maintenance Manual
28–26–04 Fuel Boost Pump-Removal/
Installation, dated August 31, 2020.
• Gulfstream Aerospace GVII–G600
Airplane Flight Manual Supplement No.
GVII–G600–2020–06 dated September 8,
2020.
This service information is reasonably
available because the interested parties
have access to it through their normal
course of business or by the means
identified in the ADDRESSES section.
Proposed AD Requirements in This
NPRM
This proposed AD would retain all
requirements of AD 2020–23–04. This
60607
proposed AD would also require
accomplishing the actions identified as
‘‘RC’’ (required for compliance) in the
Accomplishment Instructions of
Gulfstream GVII–G500 Customer
Bulletin No. 069 and Gulfstream GVII–
G600 Customer Bulletin No. 037, both
Revision A, both dated February 2,
2023, already described, except as
discussed under ‘‘Differences Between
the Service Information and this
Proposed AD.’’ This proposed AD
would also limit the installation of
affected parts.
Difference Between Service Information
and This Proposed AD
For this AD, step III.D. of Gulfstream
GVII–G500 Customer Bulletin No. 069,
Revision A, dated February 2, 2023, and
Gulfstream GVII–G600 Customer
Bulletin No. 037, Revision A, dated
February 2, 2023, as applicable, is also
RC.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 89
airplanes of U.S. registry. The FAA
estimates the following costs to comply
with this proposed AD:
ESTIMATED COSTS
Cost per
product
Labor cost
Incorporate information into AMM and AFM (retained actions from AD 2020–23–04).
Impeller shaft key inspection (new proposed action).
2 work-hours × $85 per hour = $170 .................
$0
$170
$15,130
36 work-hours × $85 per hour = $3,060 ............
0
3,060
272,340
The FAA estimates the following
costs to do any necessary part marking
and fuel boost pump replacements that
Parts cost
Cost on U.S.
operators
Action
would be required based on the results
of the proposed inspection for proper
installation. The FAA has no way of
determining the number of aircraft that
might need these actions:
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ON-CONDITION COSTS
Action
Labor cost
Part marking ......................................................................
Fuel pump replacement (per fuel boost pump) ................
0.5 work-hour × $85 per hour = $42.50 ..........................
10 work-hours × $85 per hour = $850 .............................
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, some or all
of the costs of this proposed AD may be
covered under warranty, thereby
reducing the cost impact on affected
operators.
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Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. 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.
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Parts cost
$10
106,706
Cost per
product
$52.50
107,556
The FAA is issuing this rulemaking
under the authority described in
Subtitle VII, Part A, Subpart III, Section
44701, General requirements. Under
that section, Congress charges the FAA
with promoting safe flight of civil
aircraft in air commerce by prescribing
regulations for practices, methods, and
procedures the Administrator finds
necessary for safety in air commerce.
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Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Proposed Rules
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
The FAA has determined that this
proposed AD would not have federalism
implications under Executive Order
13132. This proposed AD would 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 the proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Would not affect intrastate
aviation in Alaska, and
(3) Would 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 Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
(AD) 2020–23–04, Amendment 39–
21320 (85 FR 71232, November 9, 2020),
and
■ b. Adding the following new AD:
■
■
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Gulfstream Aerospace Corporation: Docket
No. FAA–2023–1805; Project Identifier
AD–2023–00019–T.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) action by
October 20, 2023.
(b) Affected ADs
This AD replaces AD 2020–23–04,
Amendment 39–21320 (85 FR 71232,
November 9, 2020) (AD 2020–23–04).
(c) Applicability
This AD applies to the Gulfstream
Aerospace Corporation airplanes, certificated
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in any category, identified in paragraphs
(c)(1) and (2) of this AD.
(1) Model GVII–G500 airplanes, serial
numbers (S/Ns) 72001 and subsequent.
(2) Model GVII–G600 airplanes, S/Ns
73001 and subsequent.
(d) Subject
Air Transport Association (ATA) of
America Code 2822, Fuel Boost Pump.
(e) Unsafe Condition
This AD was prompted by a report of
misassembled impellers onto the shaft of the
fuel boost pump during production. The FAA
is issuing this AD to prevent the ignition of
flammable vapors in the fuel tank as a result
of frictional heating or sparks caused by a
missing, misplaced, or dislodged impeller
shaft key inside the fuel boost pump. The
unsafe condition, if not addressed, could
result in a potential source of ignition in the
fuel tank and consequent fire or explosion.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Retained Manual Updates, With No
Changes
This paragraph restates the requirements of
paragraph (g) of AD 2020–23–04, with no
changes. For Model GVII–G500 airplane S/Ns
72001 and 72007 through 72062 inclusive;
and Model GVII–G600 airplane S/Ns 73002,
73004, 73006 through 73040 inclusive,
73042, and 73043: Within 14 days after
November 24, 2020 (the effective date of AD
2020–23–04), do the actions in paragraphs
(g)(1) through (3) of this AD, as applicable.
(1) Revise your existing airplane
maintenance manual (AMM) by replacing the
procedures listed in paragraphs (g)(1)(i)
through (vi) of this AD, as applicable for your
model airplane.
(i) GVII–G500 Maintenance Manual 12–13–
01 Defueling Procedure-Defuel, dated August
31, 2020;
(ii) GVII–G500 Maintenance Manual 28–
26–04 Fuel Boost Pump-Prime, dated August
31, 2020;
(iii) GVII–G600 Maintenance Manual 12–
13–01 Defueling Procedure-Defuel, dated
August 31, 2020;
(iv) GVII–G600 Maintenance Manual 28–
26–04 Fuel Boost Pump-Prime, dated August
31, 2020;
(v) GVII–G600 Maintenance Manual 28–
26–04 Fuel Boost Pump-Removal/
Installation, dated August 31, 2020; and
(vi) GVII–G600 Maintenance Manual 28–
26–05 Fuel Boost Pump Canister-Removal/
Installation, dated August 31, 2020.
(2) Revise your existing airplane flight
manual (AFM) by including in the AFM the
airplane flight manual supplement (AFMS)
listed in paragraph (g)(2)(i), (ii), or (iii) of this
AD that is applicable to your model airplane.
Using a later AFM revision with information
identical to that contained in the AFMS
specified for your airplane is acceptable for
compliance with the requirement of this
paragraph.
(i) Gulfstream Aerospace GVII–G500
Airplane Flight Manual Supplement No.
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GVII–G500 (Issue 1)–2020–05, dated
September 8, 2020;
(ii) Gulfstream Aerospace GVII–G500
Airplane Flight Manual Supplement No.
GVII–G500–2020–06, dated September 8,
2020; or
(iii) Gulfstream Aerospace GVII–G600
Airplane Flight Manual Supplement No.
GVII–G600–2020–06, dated September 8,
2020.
(3) The action required by paragraph (g)(2)
of this AD may be performed by the owner/
operator (pilot) holding at least a private pilot
certificate and must be entered into the
aircraft records showing compliance with
this AD in accordance with 14 CFR 43.9(a)(1)
through (4), and 14 CFR 91.417(a)(2)(v). The
record must be maintained as required by 14
CFR 91.417, 121.380, or 135.439.
(h) New Requirements
For Model GVII–G500 airplane S/Ns 72001
and 72007 through 72062 inclusive; and
Model GVII–G600 airplane S/Ns 73002,
73004, 73006 through 73040 inclusive,
73042, and 73043: Except as specified in
paragraph (i) of this AD, within 24 months
after the effective date of this AD, do all
actions specified in paragraph III.D. and all
applicable actions identified as ‘‘RC’’
(required for compliance) in, and in
accordance with, the Accomplishment
Instructions of Gulfstream GVII–G500
Customer Bulletin No. 069 or GVIII–G600
Customer Bulletin No. 037, both Revision A,
dated February 2, 2023, as applicable.
Note 1 to paragraph (h): The serial number
on the aft exterior of the pump is not the
pump serial number.
Note 2 to paragraph (h): Guidance on
pump removal and installation procedures
can be found in GVII–G500 Aircraft
Maintenance Manual, Revision 12, and GVII–
G600 Aircraft Maintenance Manual, Revision
8, both dated August 15, 2022.
(i) Service Information Exception
Where Gulfstream GVII–G500 Customer
Bulletin No. 069 and GVIII–G600 Customer
Bulletin No. 037, both Revision A, dated
February 2, 2023, specify to return any pump
for repair, this AD requires replacing the
pump before further flight in accordance
with the requirements of paragraph (h) of this
AD.
(j) Terminating Action for Paragraph (g) of
This AD
The requirements of paragraph (g) of this
AD are terminated if all applicable actions
required by paragraph (h) of this AD have
been accomplished.
(k) Parts Installation Limitation
As of the effective date of the AD, no
person may install on any airplane a fuel
boost pump having a part and serial number
specified in Table 1 of Gulfstream GVII–G500
Customer Bulletin No. 069 or Gulfstream
GVII–G600 Customer Bulletin No. 037, both
Revision A, both dated February 2, 2023, as
applicable, unless that pump is marked with
the letter ‘‘C’’ to the right of the ‘‘INSP’’
legend on the pump data area.
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Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Proposed Rules
(l) Credit for Previous Actions
This paragraph provides credit for the
actions specified in paragraph (h) of this AD,
if those actions were performed before the
effective date of this AD using the service
information identified in paragraphs (l)(1)
and (2) of this AD, as applicable. This service
information is not incorporated by reference
in this AD.
(1) Gulfstream GVII–G500 Customer
Bulletin No. 069, dated October 19, 2022.
(2) Gulfstream GVII–G600 Customer
Bulletin No. 037, dated October 19, 2022.
(m) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, East Certification 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 (n)(1) of
this AD.
(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) AMOCs approved for AD 2020–23–04
are approved as AMOCs for the
corresponding provisions of this AD.
(4) For service information that contains
steps that are labeled as Required for
Compliance (RC), the provisions of
paragraphs (m)(4)(i) and (ii) of this AD 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.
(ii) Steps not labeled as RC may be
deviated from using accepted methods in
accordance with the operator’s 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.
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(n) Related Information
(1) For more information about this AD,
contact Jared Meyer, Aviation Safety
Engineer, FAA, 1701 Columbia Avenue,
College Park, GA 30337; phone: 404–474–
5534; email: 9-ASO-ATLACO-ADs@faa.gov.
(2) Service information identified in this
AD that is not incorporated by reference is
available at the addresses specified in
paragraphs (o)(5) and (6) of this AD.
(o) 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. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless this AD specifies otherwise.
(3) The following service information was
approved for IBR on [DATE 35 DAYS AFTER
PUBLICATION OF THE FINAL RULE].
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(i) Gulfstream GVII–G500 Customer
Bulletin No. 069, Revision A, dated February
2, 2023.
(ii) Gulfstream GVII–G600 Customer
Bulletin No. 037, Revision A, dated February
2, 2023.
(4) The following service information was
approved for IBR on November 9, 2020 (85
FR 71232).
(i) Gulfstream Aerospace GVII–G500
Airplane Flight Manual Supplement No.
GVII–G500 (Issue 1)–2020–05, dated
September 8, 2020.
(ii) Gulfstream Aerospace GVII–G500
Airplane Flight Manual Supplement No.
GVII–G500–2020–06, dated September 8,
2020.
(iii) Gulfstream Aerospace GVII–G600
Airplane Flight Manual Supplement No.
GVII–G600–2020–06 dated September 8,
2020.
(iv) GVII–G500 Maintenance Manual 12–
13–01 Defueling Procedure-Defuel, dated
August 31, 2020
(v) GVII–G500 Maintenance Manual 28–
26–04 Fuel Boost Pump-Prime, dated August
31, 2020.
(vi) GVII–G600 Maintenance Manual 12–
13–01 Defueling Procedure-Defuel, dated
August 31, 2020.
(vii) GVII–G600 Maintenance Manual 28–
26–04 Fuel Boost Pump-Prime, dated August
31, 2020.
(viii) GVII–G600 Maintenance Manual 28–
26–04 Fuel Boost Pump-Removal/
Installation, dated August 31, 2020; and
(ix) GVII–G600 Maintenance Manual 28–
26–05 Fuel Boost Pump Canister-Removal/
Installation, dated August 31, 2020.
(5) For service information identified in
this AD, contact Gulfstream Aerospace
Corporation, Technical Publications Dept.,
P.O. Box 2206, Savannah, GA 31402–2206;
telephone 800–810–4853; email pubs@
gulfstream.com; website gulfstream.com/en/
customer-support.
(6) 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
206–231–3195.
(7) 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:
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on August 24, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–18690 Filed 9–1–23; 8:45 am]
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60609
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Parts 260, 261, 262, 263, 264,
265, 266, 267, 268 and 270
[EPA–HQ–OLEM–2023–0320; FRL: 10001–
02–OLEM]
RIN 2050–AH29
Used Drum Management and
Reconditioning; Extension of
Comment Period
Environmental Protection
Agency.
ACTION: Advance notice of proposed
rulemaking; extension of comment
period.
AGENCY:
The U.S. Environmental
Protection Agency (the EPA) is
extending the comment period for the
Advance Notice of Proposed
Rulemaking (ANPRM), ‘‘Used Drum
Management and Reconditioning’’. The
EPA published this ANRPM in the
Federal Register on August 11, 2023,
and the public comment period was
scheduled to end on September 25,
2023. However, the EPA has received
several requests for additional time to
develop and submit comments on the
ANPRM. In response to the requests for
additional time, the EPA is extending
the comment period through November
22, 2023.
DATES: The comment period for the
ANPRM published August 11, 2023, at
88 FR 54537, is extended. Comments
must be received on or before November
22, 2023.
ADDRESSES:
Comments. You may send comments
on the ANPRM, identified by Docket ID
No. EPA–HQ–OLEM–2023–0320, by any
of the following methods:
• Federal eRulemaking Portal:
https://www.regulations.gov/ (our
preferred method). Follow the online
instructions for submitting comments.
• Mail: U.S. Environmental
Protection Agency, EPA Docket Center,
Office of Resource Conservation and
Recovery Docket, Mail Code 28221T,
1200 Pennsylvania Avenue NW,
Washington, DC 20460.
• Hand Delivery or Courier: EPA
Docket Center, WJC West Building,
Room 3334, 1301 Constitution Avenue
NW, Washington, DC 20004. The Docket
Center’s hours of operations are 8:30
a.m.–4:30 p.m., Monday–Friday (except
Federal Holidays).
Instructions: All submissions received
must include the Docket ID No. for this
rulemaking. Comments received may be
posted without change to https://
www.regulations.gov, including any
SUMMARY:
E:\FR\FM\05SEP1.SGM
05SEP1
]]>Agencies
[Federal Register Volume 88, Number 170 (Tuesday, September 5, 2023)]
[Proposed Rules]
[Pages 60606-60609]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-18690]
[[Page 60606]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-1805; Project Identifier AD-2023-00019-T]
RIN 2120-AA64
Airworthiness Directives; Gulfstream Aerospace Corporation
Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2020-23-04, which applies to certain Gulfstream Aerospace Corporation
Model GVII-G500 and GVII-G600 airplanes. AD 2020-23-04 requires
revising the existing airplane flight manual (AFM) and airplane
maintenance manual (AMM) to include information pertaining to the fuel
boost pump. Since the FAA issued AD 2020-23-04, an inspection for a
missing or misplaced impeller shaft key of suspect fuel boost pumps has
been developed that would terminate the actions of AD 2020-23-04. This
proposed AD would retain the requirements of AD 2020-23-04 and require
inspecting affected fuel boost pumps for proper installation of the
impeller shaft key, marking affected fuel boost pumps that pass that
inspection, and replacing fuel boost pumps that fail. This proposed AD
would also limit installation of affected fuel boost pumps. The FAA is
proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by October 20,
2023.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to regulations.gov. Follow
the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-1805; 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 NPRM, any comments received, and other
information. The street address for Docket Operations is listed above.
Material Incorporated by Reference:
For service information identified in this NPRM, contact
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O.
Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; email
[email protected]; website gulfstream.com/en/customer-support.
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 206-231-3195. It is also available on the
internet at https://www.regulations.gov by searching for and locating
Docket No. FAA-2023-1805.
FOR FURTHER INFORMATION CONTACT: Jared Meyer, Aviation Safety Engineer,
FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: 404-474-5534;
email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2023-1805; Project Identifier
AD-2023-00019-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
the proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
regulations.gov, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this proposed AD.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to Jared
Meyer, Aviation Safety Engineer, FAA, 1701 Columbia Avenue, College
Park, GA 30337; phone: 404-474-5534; email: [email protected].
Any commentary that the FAA receives that is not specifically
designated as CBI will be placed in the public docket for this
rulemaking.
Background
The FAA issued AD 2020-23-04, Amendment 39-21320 (85 FR 71232,
November 9, 2020) (AD 2020-23-04), for certain Gulfstream Aerospace
Corporation Model GVII-G500 and GVII-G600 airplanes. AD 2020-23-04 was
prompted by a report of misassembled impellers on the shaft of the fuel
boost pump during production. AD 2020-23-04 requires revising the
existing AFM and AMM to include information pertaining to the fuel
boost pump. The agency issued AD 2020-23-04 to prevent the ignition of
flammable vapors in the fuel tank as a result of frictional heating or
sparks caused by a dislodged impeller shaft key inside the fuel boost
pump, which, if the pump were to run dry, could result in a fuel tank
fire or fuel tank explosion.
Actions Since AD 2020-23-04 Was Issued
The preamble to AD 2020-23-04 specifies that the FAA considers the
requirements ``interim action'' and that the manufacturer is developing
a modification that will address the unsafe condition. That AD explains
that the FAA might consider further rulemaking if a modification is
developed, approved, and available. The manufacturer now has developed
inspection instructions for fuel boost pumps to determine correct
installation of the impeller shaft key, including replacement or re-
identification, as applicable, that will terminate the requirement to
update the AFM and AMM, and the FAA has determined that further
rulemaking is indeed necessary; this proposed AD follows from that
determination.
[[Page 60607]]
FAA's Determination
The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Gulfstream GVII-G500 Customer Bulletin No. 069 and
Gulfstream GVII-G600 Customer Bulletin No. 037, both Revision A, both
dated February 2, 2023, which describe procedures for inspecting
affected fuel boost pumps for proper installation of the impeller shaft
key, marking affected fuel boost pumps that pass that inspection, and
replacing fuel boost pumps that fail. These documents are distinct
since they apply to different airplane models.
This proposed AD would also require the following Gulfstream
service information, which the Director of the Federal Register
approved for incorporation on November 24, 2020 (85 FR 71232).
GVII-G500 Maintenance Manual 12-13-01 Defueling Procedure-
Defuel, dated August 31, 2020.
GVII-G500 Maintenance Manual 28-26-04 Fuel Boost Pump-
Prime, dated August 31, 2020.
Gulfstream Aerospace GVII-G500 Airplane Flight Manual
Supplement No. GVII-G500 (Issue 1)-2020-05, dated September 8, 2020.
Gulfstream Aerospace GVII-G500 Airplane Flight Manual
Supplement No. GVII-G500-2020-06, dated September 8, 2020.
GVII-G600 Maintenance Manual 28-26-05 Fuel Boost Pump
Canister-Removal/Installation, dated August 31, 2020.
GVII-G600 Maintenance Manual 12-13-01 Defueling Procedure-
Defuel, dated August 31, 2020.
GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-
Prime, dated August 31, 2020.
GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-
Removal/Installation, dated August 31, 2020.
Gulfstream Aerospace GVII-G600 Airplane Flight Manual
Supplement No. GVII-G600-2020-06 dated September 8, 2020.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Proposed AD Requirements in This NPRM
This proposed AD would retain all requirements of AD 2020-23-04.
This proposed AD would also require accomplishing the actions
identified as ``RC'' (required for compliance) in the Accomplishment
Instructions of Gulfstream GVII-G500 Customer Bulletin No. 069 and
Gulfstream GVII-G600 Customer Bulletin No. 037, both Revision A, both
dated February 2, 2023, already described, except as discussed under
``Differences Between the Service Information and this Proposed AD.''
This proposed AD would also limit the installation of affected parts.
Difference Between Service Information and This Proposed AD
For this AD, step III.D. of Gulfstream GVII-G500 Customer Bulletin
No. 069, Revision A, dated February 2, 2023, and Gulfstream GVII-G600
Customer Bulletin No. 037, Revision A, dated February 2, 2023, as
applicable, is also RC.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 89 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Incorporate information into AMM and AFM 2 work-hours x $85 per hour $0 $170 $15,130
(retained actions from AD 2020-23-04). = $170.
Impeller shaft key inspection (new 36 work-hours x $85 per 0 3,060 272,340
proposed action). hour = $3,060.
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary part
marking and fuel boost pump replacements that would be required based
on the results of the proposed inspection for proper installation. The
FAA has no way of determining the number of aircraft that might need
these actions:
On-Condition Costs
------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
------------------------------------------------------------------------
Part marking................. 0.5 work-hour x $10 $52.50
$85 per hour =
$42.50.
Fuel pump replacement (per 10 work-hours x 106,706 107,556
fuel boost pump). $85 per hour =
$850.
------------------------------------------------------------------------
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this proposed AD may be covered under warranty, thereby reducing the
cost impact on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. 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.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701, General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce.
[[Page 60608]]
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
The FAA has determined that this proposed AD would not have
federalism implications under Executive Order 13132. This proposed AD
would 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 the proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would 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 Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by:
0
a. Removing Airworthiness Directive (AD) 2020-23-04, Amendment 39-21320
(85 FR 71232, November 9, 2020), and
0
b. Adding the following new AD:
Gulfstream Aerospace Corporation: Docket No. FAA-2023-1805; Project
Identifier AD-2023-00019-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) action by October 20, 2023.
(b) Affected ADs
This AD replaces AD 2020-23-04, Amendment 39-21320 (85 FR 71232,
November 9, 2020) (AD 2020-23-04).
(c) Applicability
This AD applies to the Gulfstream Aerospace Corporation
airplanes, certificated in any category, identified in paragraphs
(c)(1) and (2) of this AD.
(1) Model GVII-G500 airplanes, serial numbers (S/Ns) 72001 and
subsequent.
(2) Model GVII-G600 airplanes, S/Ns 73001 and subsequent.
(d) Subject
Air Transport Association (ATA) of America Code 2822, Fuel Boost
Pump.
(e) Unsafe Condition
This AD was prompted by a report of misassembled impellers onto
the shaft of the fuel boost pump during production. The FAA is
issuing this AD to prevent the ignition of flammable vapors in the
fuel tank as a result of frictional heating or sparks caused by a
missing, misplaced, or dislodged impeller shaft key inside the fuel
boost pump. The unsafe condition, if not addressed, could result in
a potential source of ignition in the fuel tank and consequent fire
or explosion.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Manual Updates, With No Changes
This paragraph restates the requirements of paragraph (g) of AD
2020-23-04, with no changes. For Model GVII-G500 airplane S/Ns 72001
and 72007 through 72062 inclusive; and Model GVII-G600 airplane S/Ns
73002, 73004, 73006 through 73040 inclusive, 73042, and 73043:
Within 14 days after November 24, 2020 (the effective date of AD
2020-23-04), do the actions in paragraphs (g)(1) through (3) of this
AD, as applicable.
(1) Revise your existing airplane maintenance manual (AMM) by
replacing the procedures listed in paragraphs (g)(1)(i) through (vi)
of this AD, as applicable for your model airplane.
(i) GVII-G500 Maintenance Manual 12-13-01 Defueling Procedure-
Defuel, dated August 31, 2020;
(ii) GVII-G500 Maintenance Manual 28-26-04 Fuel Boost Pump-
Prime, dated August 31, 2020;
(iii) GVII-G600 Maintenance Manual 12-13-01 Defueling Procedure-
Defuel, dated August 31, 2020;
(iv) GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-
Prime, dated August 31, 2020;
(v) GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-
Removal/Installation, dated August 31, 2020; and
(vi) GVII-G600 Maintenance Manual 28-26-05 Fuel Boost Pump
Canister-Removal/Installation, dated August 31, 2020.
(2) Revise your existing airplane flight manual (AFM) by
including in the AFM the airplane flight manual supplement (AFMS)
listed in paragraph (g)(2)(i), (ii), or (iii) of this AD that is
applicable to your model airplane. Using a later AFM revision with
information identical to that contained in the AFMS specified for
your airplane is acceptable for compliance with the requirement of
this paragraph.
(i) Gulfstream Aerospace GVII-G500 Airplane Flight Manual
Supplement No. GVII-G500 (Issue 1)-2020-05, dated September 8, 2020;
(ii) Gulfstream Aerospace GVII-G500 Airplane Flight Manual
Supplement No. GVII-G500-2020-06, dated September 8, 2020; or
(iii) Gulfstream Aerospace GVII-G600 Airplane Flight Manual
Supplement No. GVII-G600-2020-06, dated September 8, 2020.
(3) The action required by paragraph (g)(2) of this AD may be
performed by the owner/operator (pilot) holding at least a private
pilot certificate and must be entered into the aircraft records
showing compliance with this AD in accordance with 14 CFR 43.9(a)(1)
through (4), and 14 CFR 91.417(a)(2)(v). The record must be
maintained as required by 14 CFR 91.417, 121.380, or 135.439.
(h) New Requirements
For Model GVII-G500 airplane S/Ns 72001 and 72007 through 72062
inclusive; and Model GVII-G600 airplane S/Ns 73002, 73004, 73006
through 73040 inclusive, 73042, and 73043: Except as specified in
paragraph (i) of this AD, within 24 months after the effective date
of this AD, do all actions specified in paragraph III.D. and all
applicable actions identified as ``RC'' (required for compliance)
in, and in accordance with, the Accomplishment Instructions of
Gulfstream GVII-G500 Customer Bulletin No. 069 or GVIII-G600
Customer Bulletin No. 037, both Revision A, dated February 2, 2023,
as applicable.
Note 1 to paragraph (h): The serial number on the aft exterior
of the pump is not the pump serial number.
Note 2 to paragraph (h): Guidance on pump removal and
installation procedures can be found in GVII-G500 Aircraft
Maintenance Manual, Revision 12, and GVII-G600 Aircraft Maintenance
Manual, Revision 8, both dated August 15, 2022.
(i) Service Information Exception
Where Gulfstream GVII-G500 Customer Bulletin No. 069 and GVIII-
G600 Customer Bulletin No. 037, both Revision A, dated February 2,
2023, specify to return any pump for repair, this AD requires
replacing the pump before further flight in accordance with the
requirements of paragraph (h) of this AD.
(j) Terminating Action for Paragraph (g) of This AD
The requirements of paragraph (g) of this AD are terminated if
all applicable actions required by paragraph (h) of this AD have
been accomplished.
(k) Parts Installation Limitation
As of the effective date of the AD, no person may install on any
airplane a fuel boost pump having a part and serial number specified
in Table 1 of Gulfstream GVII-G500 Customer Bulletin No. 069 or
Gulfstream GVII-G600 Customer Bulletin No. 037, both Revision A,
both dated February 2, 2023, as applicable, unless that pump is
marked with the letter ``C'' to the right of the ``INSP'' legend on
the pump data area.
[[Page 60609]]
(l) Credit for Previous Actions
This paragraph provides credit for the actions specified in
paragraph (h) of this AD, if those actions were performed before the
effective date of this AD using the service information identified
in paragraphs (l)(1) and (2) of this AD, as applicable. This service
information is not incorporated by reference in this AD.
(1) Gulfstream GVII-G500 Customer Bulletin No. 069, dated
October 19, 2022.
(2) Gulfstream GVII-G600 Customer Bulletin No. 037, dated
October 19, 2022.
(m) Alternative Methods of Compliance (AMOCs)
(1) The Manager, East Certification 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 (n)(1) of this AD.
(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) AMOCs approved for AD 2020-23-04 are approved as AMOCs for
the corresponding provisions of this AD.
(4) For service information that contains steps that are labeled
as Required for Compliance (RC), the provisions of paragraphs
(m)(4)(i) and (ii) of this AD 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.
(ii) Steps not labeled as RC may be deviated from using accepted
methods in accordance with the operator's 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.
(n) Related Information
(1) For more information about this AD, contact Jared Meyer,
Aviation Safety Engineer, FAA, 1701 Columbia Avenue, College Park,
GA 30337; phone: 404-474-5534; email: [email protected].
(2) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (o)(5) and (6) of this AD.
(o) 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. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(3) The following service information was approved for IBR on
[DATE 35 DAYS AFTER PUBLICATION OF THE FINAL RULE].
(i) Gulfstream GVII-G500 Customer Bulletin No. 069, Revision A,
dated February 2, 2023.
(ii) Gulfstream GVII-G600 Customer Bulletin No. 037, Revision A,
dated February 2, 2023.
(4) The following service information was approved for IBR on
November 9, 2020 (85 FR 71232).
(i) Gulfstream Aerospace GVII-G500 Airplane Flight Manual
Supplement No. GVII-G500 (Issue 1)-2020-05, dated September 8, 2020.
(ii) Gulfstream Aerospace GVII-G500 Airplane Flight Manual
Supplement No. GVII-G500-2020-06, dated September 8, 2020.
(iii) Gulfstream Aerospace GVII-G600 Airplane Flight Manual
Supplement No. GVII-G600-2020-06 dated September 8, 2020.
(iv) GVII-G500 Maintenance Manual 12-13-01 Defueling Procedure-
Defuel, dated August 31, 2020
(v) GVII-G500 Maintenance Manual 28-26-04 Fuel Boost Pump-Prime,
dated August 31, 2020.
(vi) GVII-G600 Maintenance Manual 12-13-01 Defueling Procedure-
Defuel, dated August 31, 2020.
(vii) GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-
Prime, dated August 31, 2020.
(viii) GVII-G600 Maintenance Manual 28-26-04 Fuel Boost Pump-
Removal/Installation, dated August 31, 2020; and
(ix) GVII-G600 Maintenance Manual 28-26-05 Fuel Boost Pump
Canister-Removal/Installation, dated August 31, 2020.
(5) For service information identified in this AD, contact
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O.
Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; email
[email protected]; website gulfstream.com/en/customer-support.
(6) 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 206-231-3195.
(7) 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 [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on August 24, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-18690 Filed 9-1-23; 8:45 am]
BILLING CODE 4910-13-P
