Airworthiness Directives; Safran Aerosystems (Formerly AVOX Systems Inc.; Scott Aviation) Oxygen Cylinder and Valve Assemblies, and Oxygen Valve Assemblies, 84267-84272 [2024-24370]
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Issued on September 13, 2024.
Peter A. White,
Deputy Director, Integrated Certificate
Management Division, Aircraft Certification
Service.
[FR Doc. 2024–24369 Filed 10–21–24; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2024–0759; Project
Identifier AD–2023–01040–T; Amendment
39–22857; AD 2024–19–15]
RIN 2120–AA64
Airworthiness Directives; Safran
Aerosystems (Formerly AVOX Systems
Inc.; Scott Aviation) Oxygen Cylinder
and Valve Assemblies, and Oxygen
Valve Assemblies
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2023–13–
11, which applied to certain AVOX
Systems Inc. (formerly Scott Aviation)
oxygen cylinder and valve assemblies,
and oxygen valve assemblies, installed
on but not limited to various transport
airplanes. AD 2023–13–11 required
inspecting the oxygen valve assemblies,
and oxygen cylinder and valve
assemblies, to determine the serial
number of the valve, cylinder, and
entire assembly; inspecting certain
assemblies and parts for correct spacing
of the gap between the bottom of the
packing retainer and top of the valve
body on the assemblies, and replacing
assemblies having unacceptable gaps.
AD 2023–13–11 also limited the
installation of affected parts and
required reporting inspection results
and returning certain assemblies to the
manufacturer. This AD was prompted
by the determination that additional
assemblies and parts are subject to the
unsafe condition. This AD requires the
actions specified in AD 2023–13–11 and
expands the list of affected assemblies
and parts. The FAA is issuing this AD
to address the unsafe condition on these
products.
DATES: This AD is effective November
26, 2024.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of November 26, 2024.
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SUMMARY:
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The Director of the Federal Register
approved the incorporation by reference
of certain other publications listed in
this AD as of September 5, 2023 (88 FR
50011, August 1, 2023).
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2024–0759; 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, any comments
received, and other information. The
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.
Material Incorporated by Reference:
• For AVOX and Safran Aerosystems
material identified in this AD, contact
AVOX Systems Inc., 225 Erie Street,
Lancaster, NY 14086; telephone 716–
683–5100; website
safranaerosystems.com.
• 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 206–231–3195.
It is also available at regulations.gov
under Docket No. FAA–2024–0759.
FOR FURTHER INFORMATION CONTACT:
Gabriel Kim, Aviation Safety Engineer,
FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516–
228–7300; email 9-avs-nyaco-cos@
faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2023–13–11,
Amendment 39–22496 (88 FR 50011,
August 1, 2023) (AD 2023–13–11). AD
2023–13–11 applied to certain AVOX
Systems Inc. (formerly Scott Aviation)
oxygen cylinder and valve assemblies,
and oxygen valve assemblies, installed
on but not limited to various transport
airplanes. AD 2023–13–11 was
prompted by reports of cylinder and
valve assemblies having oxygen leakage
from the valve assembly vent hole,
caused by the absence of a guide that
maintains appropriate spacing between
certain parts, and by a determination
that additional assemblies and parts are
affected by the unsafe condition
addressed by AD 2022–04–09,
Amendment 39–21951 (87 FR 10958,
February 28, 2022) (AD 2022–04–09)
(which was superseded by AD 2023–13–
11).
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84267
The NPRM published in the Federal
Register on March 25, 2024 (89 FR
20558). The NPRM was prompted by a
report that the manufacturer identified
additional assemblies and parts subject
to the unsafe condition. In the NPRM,
the FAA proposed to continue to require
the actions specified in AD 2023–13–11
and require similar actions for those
additional assemblies and parts. The
FAA is issuing this AD to address
oxygen leakage from the cylinder and
valve assemblies, which could result in
decreased or insufficient oxygen supply
during a depressurization event; and
heating or flow friction, which could
cause an ignition event in the valve
assembly.
Discussion of Final Airworthiness
Directive
Comments
The FAA received comments from
four commenters, including Alaska
Airlines (Alaska), American Airlines,
Cathay Pacific Airways, Delta Air Lines
(Delta), and SIAEC (SIA Engineering
Company). The following presents the
comments received on the NPRM and
the FAA’s response to each comment.
Request To Reference Later Revisions
of Material Identified as Credit
Alaska requested adding the required
revisions of the material (identified in
paragraphs (l)(1) through (3) of the
proposed AD) to the group of material
identified as acceptable material in
paragraph (p)(3) of the proposed AD for
actions accomplished before the
effective date of this AD.
The FAA disagrees with the request to
revise paragraph (p)(3) of this AD. A
global alternative method of compliance
(AMOC) letter, 753–23–00200, was
issued for AD 2023–13–11 that
identified the required material in
paragraphs (l)(1) through (3) of this AD
as an acceptable AMOC.
Accomplishment of the required
material before the effective date of this
AD to comply with the requirements of
this AD is addressed by paragraph (f) of
this AD. Paragraph (f) of this AD allows
for the use of the required material
before the effective date of this AD. No
change to the AD has been made in this
regard.
Request for Clarification on Acceptable
Material for Credit Conclusion
SIAEC asked if credit can be granted
for the actions specified in paragraphs
(h) and (i) of the proposed AD if
Revision 03 of the material was used.
The FAA agrees to clarify. Paragraphs
(h) and (i) of this AD still reference
Revision 03 of the material as the
primary means of compliance for those
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parts identified in Appendices 1 or 2 of
the referenced material. Paragraph (p) of
this AD references the other revision
levels that are acceptable for credit if
they were used before certain effective
dates. Paragraph (f) of this AD allows for
the use of the required material before
the effective date of this AD. No change
to this AD is necessary in this regard.
Request To Require Actions for All
Serial Numbers Instead of List of
Affected Serial Numbers
American Airlines requested revising
the applicability of the proposed AD to
apply to all serial numbers of the
affected part numbers, instead of adding
groups of additional serial numbers in
superseding ADs. Alaska requested
revising the requirements for the serial
number inspection, in particular, the
ones in Appendix 3 of the required
material referenced in paragraph (l) of
the proposed AD. Alaska explained that
the reading and recording of the serial
numbers in three different places on the
bottle leads to numerous discrepancies
by personnel, which then leads to
additional time spent trying to review
all the numbers and identify the affected
airplanes, possibly leading to affected
bottles remaining on the airplane longer
before being removed. Alaska suggested
that a check for the manufacturer date,
and then if a bottle has an affected
manufacture date, an inspection to
determine if the valve has a blue dot,
would be sufficient to determine if an
affected bottle is installed on the
airplane. Alaska also suggested that
once an affected bottle is found, the
operator could then choose to
accomplish the gap check and record
the required serial numbers, or assume
all affected bottles are suspect, and then
send any suspected bottle back to the
vendor instead of doing a gap check and
subsequent serial number recordkeeping.
The FAA does not agree to expand the
applicability. Revising the applicability
to refer to the date of manufacture
instead of the serial numbers that must
be inspected would increase the burden
on some operators. However, operators
choosing to inspect all the serial
numbers of a part number may apply for
an AMOC using the procedures
specified in paragraph (q) of this AD. No
changes to this AD have been made in
this regard.
Request for Additional Compliance
Time for Replacing Affected Parts
Alaska requested a revision to extend
the compliance time to at least 90 days
due to the large increase in number of
affected bottles and potential effect on
the limited supply of spare bottles.
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Alaska reasoned that a compliance time
of 90 days would help repair vendors
turn around the repair of faulty bottles
in a timely manner. Although Alaska
did not specify what action or paragraph
the referenced compliance time would
be for, the FAA infers that Alaska is
referencing the replacement compliance
time specified in paragraph (m)(2) of the
proposed AD.
The FAA disagrees with the request.
A global AMOC letter, 753–23–00200,
was provided in December 2023 to
provide relief for using later revisions of
the material referenced in AD 2023–13–
11, so knowledge of the additional
numbers of affected bottles identified in
the later revisions of the material would
have been available since December
2023. In addition, the compliance time
for most of the bottles affected by AD
2023–13–11 would have elapsed in
early November 2023. Replacement
before further flight ensures that
airplanes are not knowingly flying with
an unsafe condition. Operators may also
apply for an AMOC under the
provisions of paragraph (q) of this AD.
The FAA has not changed the AD in this
regard.
Request To Remove Inspection Report
Requirement
Delta requested that the inspection
report that was specified in paragraphs
(j)(1) and (n)(1) of the proposed AD be
removed. Delta pointed to guidance in
the AD Manual (FAA–IR–M–8040.1C)
(https://drs.faa.gov/browse/excel
ExternalWindow/66DDD8E1D2E
95DB3862577270062AABD.0001) that
describes the general conditions for
requiring inspection reports, and
contrasted that with the material’s
description of the problem with the
affected valve assemblies and the
proposed AD’s proposed requirements
as the rationale for removing the
inspection report.
The FAA agrees to remove the
inspection report that was proposed in
paragraphs (j)(1) and (n)(1) of the
proposed AD for the reasons provided
by the commenter. The subsequent
paragraph identifiers have been revised,
and the cost estimate has been updated
accordingly.
Request To Address Discrepancy in
Serial Numbers in Appendix of
Material
SIAEC stated that there is a
discrepancy within the tables of
Appendix 3 of Safran Aerosystems Alert
Service Bulletin 10015804–35–01,
Revision 04, dated November 9, 2023.
SIAEC noted that some of the affected
valve serial numbers are erroneously
listed in the affected ‘‘Cylinder Serial #’’
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columns in the tables for the Cylinder
and Valve assemblies P/Ns 89794077
and 891511–14.
The FAA agrees there are
discrepancies in the serial number lists.
Paragraph (l)(1) of this AD has been
revised to correct the discrepancies.
Request for Clarification of Credit
Cathay Pacific Airways noted that the
expanded serial number list from the
latest revision of the Safran/AVOX
service bulletins has a manufacturing
date range from 2011 to 2017. The
commenter asked whether the actions
specified in the latest Safran/AVOX
service bulletin must be redone on an
affected serial number if maintenance
can show that the part has been
overhauled already.
The FAA contacted Safran for
additional information regarding the
comment, and provides the following
clarification. The ‘‘overhaul kit’’ does
not always have the necessary parts and
therefore does not meet the intent of this
AD. P/N 10015804 is a guide part
number. If this part is missing, the gap
check will fail. However, if the tank
undergoes an overhaul as outlined in
the Component Maintenance Manual
(specified in paragraph 1.K of the
applicable service bulletin), it will be
equipped with the necessary guide,
reassembled, and tested for leaks and
hydrostatic pressure. This process aligns
with the intent of this AD.
Additional Changes to This Final Rule
The FAA corrected the name of the
publisher of the material identified in
paragraphs (l)(1) through (3) of this AD
from AVOX Systems Inc. to Safran
Aerosystems. The FAA has also revised
references to the manufacturer’s name
specified throughout this final rule to
identify the manufacturer name as
published in the most recent material
for the affected models.
Conclusion
The FAA reviewed the relevant data,
considered any comments received, and
determined that air safety requires
adopting this AD as proposed.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these
products. Except for minor editorial
changes, and any other changes
described previously, this AD is
adopted as proposed in the NPRM.
None of the changes will increase the
economic burden on any operator.
Material Incorporated by Reference
Under 1 CFR Part 51
The FAA reviewed the following
material. This material specifies
procedures for an inspection to
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determine the serial numbers of the
oxygen cylinder and valve assemblies,
and the oxygen valve assemblies, a
detailed inspection for correct spacing
of the gap between the bottom of the
packing retainer and top of the valve
body on the assemblies, parts marking,
inspection report, and return of parts to
the manufacturer. These documents are
distinct since they apply to different
assembly part numbers.
• Safran Aerosystems Alert Service
Bulletin 10015804–35–01, Revision 04,
dated November 9, 2023.
• Safran Aerosystems Alert Service
Bulletin 10015804–35–02, Revision 06,
dated August 30, 2023.
• Safran Aerosystems Alert Service
Bulletin 10015804–35–03, Revision 05,
dated September 29, 2023.
This AD also requires the following
material, which the Director of the
Federal Register approved for
incorporation by reference as of
September 5, 2023 (88 FR 50011, August
1, 2023).
• AVOX Systems Inc. Alert Service
Bulletin 10015804–35–01, Revision 03,
dated June 7, 2021.
• AVOX Systems Inc. Alert Service
Bulletin 10015804–35–02, Revision 03,
dated March 11, 2022.
• AVOX Systems Inc. Alert Service
Bulletin 10015804–35–03, Revision 03,
dated June 18, 2021.
This material 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.
Costs of Compliance
The FAA estimates that this AD
affects 3,777 oxygen cylinder and valve
assemblies, and oxygen valve
assemblies, installed on various
transport category airplanes of U.S.
registry. The FAA estimates the
following costs to comply with this AD:
ESTIMATED COSTS
Action
Labor cost
Parts cost
Cost per
product
Cost on U.S.
operators
Serial number inspection (retained action from
AD 2023-13-11).
1 work-hour × $85 per hour = $85 .................
None ............
$85
$321,045
The FAA estimates the following
costs to do any necessary actions that
would be required based on the results
of the inspection. The FAA has no way
of determining the number of aircraft
that might need these actions:
ON-CONDITION COSTS
Action
Labor cost
Parts cost
Detailed inspection .......................................................
Replacement .................................................................
Return of parts ..............................................................
1 work-hour × $85 per hour = $85 ...............................
1 work-hour × $85 per hour = $85 ...............................
1 work-hour × $85 per hour = $85 ...............................
Cost per
product
$0
*
** 50
$85
85
135
* The FAA has received no definitive data on the parts cost for the on-condition replacement.
** The FAA has received no definitive data to provide cost estimates for the on-condition return of parts, except the FAA estimates that it would
take about 1 work-hour per product to comply with the associated paperwork necessary for the return of parts and cost approximately $50 to
ship.
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, some or all
of the costs of this 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.
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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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
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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 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) 2013–13–11, Amendment 39–
22496 (88 FR 50011, August 1, 2023);
and
■
■
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b. Adding the following new AD:
2024–19–15 Safran Aerosystems (formerly
AVOX Systems Inc.; Scott Aviation):
Amendment 39–22857; Docket No.
FAA–2024–0759; Project Identifier AD–
2023–01040–T.
(a) Effective Date
This airworthiness directive (AD) is
effective November 26, 2024.
(b) Affected ADs
This AD replaces AD 2023–13–11,
Amendment 39–22496 (88 FR 50011, August
1, 2023) (AD 2023–13–11).
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(c) Applicability
This AD applies to Safran Aerosytems
(formerly AVOX Systems Inc.; Scott
Aviation) oxygen cylinder and valve
assemblies having part number (P/N)
89794050, 89794077, 89794015, 891511–14,
806835–01, 807982–01, 808433–01, or
891311–14; and oxygen valve assemblies
(body and gage assemblies) having P/N
807206–01. These assemblies might be
installed on, but not limited to, the aircraft
identified in paragraphs (c)(1) through (12) of
this AD, certificated in any category.
(1) Airbus SAS Model A300 B2–1A, B2–
1C, B2K–3C, B2–203, B4–2C, B4–103, and
B4–203 airplanes.
(2) Airbus SAS Model A300 B4–601, B4–
603, B4–620, B4–622, B4–605R, B4–622R,
F4–605R, F4–622R, and C4–605R Variant F
airplanes.
(3) Airbus SAS Model A310–203, –204,
–221, –222, –304, –322, –324, and –325
airplanes.
(4) Airbus SAS Model A318–111, –112,
–121, and –122 airplanes.
(5) Airbus SAS Model A319–111, –112,
–113, –114, –115, –131, –132, –133, and
–151N airplanes.
(6) Airbus SAS Model A320–211, –212,
–214, –216, –231, –232, –233, –251N, –252N,
–253N, –271N, –272N, and –273N airplanes.
(7) Airbus SAS Model A321–111, –112,
–131, –211, –212, –213, –231, –232, –251N,
–252N, –253N, –271N, –272N, –251NX,
–252NX, –253NX, –271NX, and –272NX
airplanes.
(8) Airbus SAS Model A330–201, –202,
–203, –223, –243, –301, –302, –303, –321,
–322, –323, –341, –342, –343, and –941
airplanes.
(9) Airbus Model A340–211, –212, –213,
–311, –312, –313, –541, and –642 airplanes.
(10) ATR–GIE Avions de Transport
Régional Model ATR42–200, –300, –320, and
–500 airplanes.
(11) ATR–GIE Avions de Transport
Régional Model ATR72–101, –102, –201,
–202, –211, –212, and –212A airplanes.
(12) The Boeing Company Model 747–8
series airplanes.
(d) Subject
Air Transport Association (ATA) of
America Code 35, Oxygen.
(e) Unsafe Condition
This AD was prompted by reports of
cylinder and valve assemblies having oxygen
leakage from the valve assembly vent hole,
caused by the absence of a guide that
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maintains appropriate spacing between
certain parts, and by the manufacturer
identifying additional assemblies and parts
affected by the unsafe condition. The FAA is
issuing this AD to address oxygen leakage
from cylinder and valve assemblies. The
unsafe condition, if not addressed, could
result in decreased or insufficient oxygen
supply during a depressurization event; and
heating or flow friction, which could cause
an ignition event in the valve assembly.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Retained Definition of Detailed
Inspection, With No Changes
This paragraph restates the requirements of
paragraph (g) of AD 2023–13–11, with no
changes. For the purposes of this AD, a
detailed inspection is an intensive
examination of a specific item, installation,
or assembly to detect damage, failure, or
irregularity. Available lighting is normally
supplemented with a direct source of good
lighting at an intensity deemed appropriate.
Inspection aids such as mirror, magnifying
lenses, etc., may be necessary. Surface
cleaning and elaborate procedures may be
required.
(h) Retained Identification of Affected
Cylinder and Valve Assemblies, With
Updated Language
This paragraph restates the requirements of
paragraph (h) of AD 2023–13–11, with
updated language. Within 60 days after
September 5, 2023 (the effective date of AD
2023–13–11), inspect the oxygen valve
assemblies, and oxygen cylinder and valve
assemblies, to determine if the serial
numbers of the valve, cylinder, and entire
assembly, are listed in Appendix 1 or
Appendix 2, ‘‘Affected Shipments,’’ of the
applicable material identified in paragraphs
(h)(1) through (3) of this AD. A review of
airplane maintenance records is acceptable in
lieu of this inspection if the serial numbers
can be conclusively determined from that
review.
(1) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–01, Revision 03, dated
June 7, 2021.
(2) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–02, Revision 03, dated
March 11, 2022.
(3) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–03, Revision 03, dated
June 18, 2021.
(i) Retained Inspection of the Gap, Parts
Marking Actions, and Replacement, With
Updated Language
This paragraph restates the requirements of
paragraph (i) of AD 2023–13–11, with
updated language. If, during any inspection
or records review required by paragraph (h)
of this AD, any oxygen valve assembly, valve
or cylinder of an oxygen cylinder and valve
assembly, or oxygen cylinder and valve
assembly having an affected serial number is
found: Before further flight, do a detailed
inspection for correct spacing of the gap
between the bottom of the packing retainer
and top of the valve body, in accordance with
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paragraph 3.C. of the Accomplishment
Instructions of the applicable material
identified in paragraphs (h)(1) through (3) of
this AD.
(1) If the gap is found to be acceptable, as
defined in the applicable material identified
in paragraphs (h)(1) through (3) of this AD,
before further flight, do the parts marking
actions in accordance with paragraph 3.D.(1)
of the Accomplishment Instructions of the
applicable material identified in paragraphs
(h)(1) through (3) of this AD.
(2) If the gap is found to be unacceptable,
as defined in the material identified in
paragraphs (h)(1) through (3) of this AD,
before further flight, remove the affected
assembly, in accordance with paragraphs
3.D.(2) or 3.D.(3), as applicable, of the
Accomplishment Instructions of the
applicable material identified in paragraphs
(h)(1) through (3) of this AD; and replace
with a serviceable assembly.
(j) Retained Return of Parts, With Updated
Language
This paragraph restates the requirement to
return parts, as specified in paragraph (j)(2)
of AD 2023–13–11, with updated language.
If, during the inspection required by
paragraph (i) of this AD, any gap is found to
be unacceptable, within the applicable time
specified in paragraph (j)(1) or (2) of this AD,
return the assembly to the manufacturer in
accordance with paragraph 3.D.(2) or 3.D.(3),
as applicable, of the Accomplishment
Instructions of the applicable material
identified in paragraphs (h)(1) through (3) of
this AD, except you are not required to
contact AVOX Systems Inc. for shipping
instructions.
(1) If the inspection was done on or after
September 5, 2023 (the effective date of AD
2023–13–11): Return the assembly within 30
days after the inspection.
(2) If the inspection was done before
September 5, 2023 (the effective date of AD
2023–13–11): Return the assembly within 30
days after September 5, 2023.
(k) Retained Parts Installation Limitation,
With Updated Language
This paragraph restates the provisions of
paragraph (k) of AD 2023–13–11, with
updated language. As of September 5, 2023
(the effective date of AD 2023–13–11), no
AVOX Systems Inc. oxygen valve assembly,
or valve or cylinder that is part of an oxygen
cylinder and valve assembly, or oxygen
cylinder and valve assembly having an
affected serial number identified in
Appendix 1, ‘‘Affected Shipments,’’ or
Appendix 2, ‘‘Affected Shipments,’’ of any
AVOX Systems Inc. material identified in
paragraphs (h)(1) through (3) of this AD may
be installed on any airplane unless the
requirements of paragraph (i) of this AD have
been accomplished on that affected assembly.
(l) New Identification of Additional Affected
Cylinder and Valve Assemblies
Within 60 days after the effective date of
this AD, inspect the oxygen valve assemblies,
and oxygen cylinder and valve assemblies, to
determine if the serial numbers of the valve,
cylinder, and entire assembly, are listed in
Appendix 3, ‘‘Affected Shipments,’’ of the
applicable material identified in paragraphs
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(l)(1) through (3) of this AD. A review of
airplane maintenance records is acceptable in
lieu of this inspection if the serial numbers
can be conclusively determined from that
review.
(1) Safran Aerosystem Alert Service
Bulletin 10015804–35–01, Revision 04, dated
November 9, 2023, except as specified in
paragraphs (l)(1)(i) and (ii).
(i) In rows 2 through 492 of table tab
‘‘89794077’’ in Appendix 3 of Safran
Aerosystems Alert Service Bulletin
10015804–35–01, Revision 04, dated
November 9, 2023, the list of numbers in the
‘‘Valve Serial #’’ and ‘‘Cylinder Serial #’’
columns have been transposed with each
other and the list of numbers in the ‘‘Valve
Part #’’ and ‘‘Cylinder Part #’’ columns have
also been transposed with each other.
(ii) In rows 2 through 65 of table tab
891511–14 in Appendix 3 of Safran
Aerosystems Alert Service Bulletin
10015804–35–01, Revision 04, dated
November 9, 2023, the list of numbers in the
‘‘Valve Serial #’’ and ‘‘Cylinder Serial #’’
columns have been transposed with each
other, and the list of numbers in the ‘‘Valve
Part #’’ and ‘‘Cylinder Part #’’ columns have
been transposed with each other.
(2) Safran Aerosystems Alert Service
Bulletin 10015804–35–02, Revision 06, dated
August 30, 2023.
(3) Safran Aerosystems Inc. Alert Service
Bulletin 10015804–35–03, Revision 05, dated
September 29, 2023.
(m) New Inspection of the Gap, Parts
Marking Actions, and Replacement for
Additional Parts
If, during any inspection or records review
required by paragraph (l) of this AD, any
oxygen valve assembly, valve or cylinder of
an oxygen cylinder and valve assembly, or
oxygen cylinder and valve assembly having
an affected serial number is found: Before
further flight, do a detailed inspection for
correct spacing of the gap between the
bottom of the packing retainer and top of the
valve body, in accordance with paragraph
3.C. of the Accomplishment Instructions of
the applicable material identified in
paragraphs (l)(1) through (3) of this AD.
(1) If the gap is found to be acceptable, as
defined in the applicable material identified
in paragraphs (l)(1) through (3) of this AD,
before further flight, do the parts marking
actions in accordance with paragraph 3.D.(1)
of the Accomplishment Instructions of the
applicable material identified in paragraphs
(l)(1) through (3) of this AD.
(2) If the gap is found to be unacceptable,
as defined in the material identified in
paragraphs (l)(1) through (3) of this AD,
before further flight, remove the affected
assembly, in accordance with paragraphs
3.D.(2) or 3.D.(3), as applicable, of the
Accomplishment Instructions of the
applicable material identified in paragraphs
(l)(1) through (3) of this AD; and replace with
a serviceable assembly.
(n) New Return of Additional Parts
If, during the inspection required by
paragraph (m) of this AD, any gap is found
to be unacceptable, within the applicable
time specified in paragraph (n)(1) or (2) of
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16:12 Oct 21, 2024
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this AD, return the assembly to the
manufacturer in accordance with paragraph
3.D.(2) or 3.D.(3), as applicable, of the
Accomplishment Instructions of the
applicable material identified in paragraphs
(l)(1) through (3) of this AD, except you are
not required to contact Safran Aerosystems
for shipping instructions.
(1) If the inspection was done on or after
the effective date of this AD: Return the
assembly within 30 days after the inspection.
(2) If the inspection was done before the
effective date of this AD: Return the assembly
within 30 days after the effective date of this
AD.
(o) New Parts Installation Limitation
As of the effective date of this AD, no
AVOX Systems Inc. or Safran Aerosystems
oxygen valve assembly, or valve or cylinder
that is part of an oxygen cylinder and valve
assembly, or oxygen cylinder and valve
assembly having an affected serial number
identified in Appendix 3, ‘‘Affected
Shipments,’’ of any Safran Aerosystems Inc.
material identified in paragraphs (l)(1)
through (3) of this AD may be installed on
any airplane unless the requirements of
paragraph (m) of this AD have been
accomplished on that affected assembly.
(p) Credit for Previous Actions
(1) This paragraph provides credit for the
actions specified in paragraphs (h) or (i) of
this AD, if those actions were performed
before September 5, 2023 (the effective date
of AD 2023–13–11), using the material
specified in paragraphs (p)(1)(i) through (iii)
of this AD. This material is not incorporated
by reference in this AD.
(i) AVOX Systems Inc. Service Bulletin
10015804–35–01, dated March 6, 2019; and
AVOX Systems Inc. Alert Service Bulletin
10015804–35–01, Revision 01, dated July 9,
2019.
(ii) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–02, Revision 1, dated
September 4, 2019.
(iii) AVOX Systems Inc. Service Bulletin
10015804–35–03, dated April 11, 2019; and
AVOX Systems Inc. Alert Service Bulletin
10015804–35–03, Revision 01, dated May 21,
2019.
(2) This paragraph provides credit for the
actions specified in paragraphs (h) or (i) of
this AD, if those actions were performed
before September 5, 2023 (the effective date
of AD 2023–13–11), using the material
specified in paragraphs (p)(2)(i) through (iii)
of this AD, which was incorporated by
reference in AD 2022–04–09.
(i) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–01, Revision 02, dated
October 16, 2019.
(ii) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–02, Revision 2, dated
October 31, 2019.
(iii) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–03, Revision 02, dated
October 15, 2019.
(3) This paragraph provides credit for the
actions specified in paragraphs (h), (i), (l), or
(m) of this AD, if those actions were
performed before the effective date of this
AD, using the material specified in
paragraphs (p)(3)(i) through (ii) of this AD.
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Fmt 4700
Sfmt 4700
84271
This material is not incorporated by reference
in this AD.
(i) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–02, Revision 04, dated
June 30, 2023; or Revision 05, dated August
14, 2023.
(ii) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–03, Revision 04, dated
June 12, 2023.
(q) 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
East Certification Branch, send it to ATTN:
Program Manager, Continuing Operational
Safety, at the address identified in paragraph
(r) of this AD or email to: AMOC@faa.gov.
(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 2023–13–11
are approved as AMOCs for the
corresponding provisions of this AD.
(r) Related Information
(1) For more information about this AD,
contact Gabriel Kim, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone 516–
228–7300; email 9-avs-nyaco-cos@faa.gov.
(2) Material identified in this AD that is not
incorporated by reference is available at the
address specified in paragraph (s)(5) of this
AD.
(s) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the material listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as
applicable to do the actions required by this
AD, unless this AD specifies otherwise.
(3) The following material was approved
for IBR on November 26, 2024.
(i) Safran Aerosystems Alert Service
Bulletin 10015804–35–01, Revision 04, dated
November 9, 2023.
(ii) Safran Aerosystems Alert Service
Bulletin 10015804–35–02, Revision 06, dated
August 30, 2023.
(iii) Safran Aerosystems Alert Service
Bulletin 10015804–35–03, Revision 05, dated
September 29, 2023.
(4) The following material was approved
for IBR on September 5, 2023 (88 FR 50011,
August 1, 2023).
(i) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–01, Revision 03, dated
June 7, 2021.
(ii) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–02, Revision 03, dated
March 11, 2022.
(iii) AVOX Systems Inc. Alert Service
Bulletin 10015804–35–03, Revision 03, dated
June 18, 2021.
(5) For material identified in this AD,
contact AVOX Systems Inc., 225 Erie Street,
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Federal Register / Vol. 89, No. 204 / Tuesday, October 22, 2024 / Rules and Regulations
Lancaster, NY 14086; telephone 716–683–
5100; website safranaerosystems.com.
(6) 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
206–231–3195.
(7) You may view this material at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA,
visit www.archives.gov/federal-register/cfr/
ibr-locations or email fr.inspection@nara.gov.
Issued on September 23, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2024–24370 Filed 10–21–24; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2024–1691; Project
Identifier MCAI–2023–01269–E; Amendment
39–22847; AD 2024–19–05]
RIN 2120–AA64
Airworthiness Directives; Safran
Helicopter Engines, S.A. (Type
Certificate Previously Held by
Turbomeca, S.A.) Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for all
Safran Helicopter Engines, S.A. (Safran)
(type certificate previously held by
Turbomeca, S.A.) Model Makila 1A,
Makila 1A1, and Makila 1A2 engines.
This AD is prompted by a determination
that the accumulated service life of
certain critical parts was
underestimated. This AD requires
determining the recalculated service life
of certain critical parts, replacing if
necessary, and also specifies conditions
for installing the parts, as specified in a
European Union Aviation Safety Agency
(EASA) 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 November
26, 2024.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of November 26, 2024.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
ddrumheller on DSK120RN23PROD with RULES1
SUMMARY:
VerDate Sep<11>2014
16:12 Oct 21, 2024
Jkt 265001
No.FAA–2024–1691; 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, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
Material Incorporated by Reference:
• For EASA material identified in this
AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; phone:
+49 221 8999 000; email: ADs@
easa.europa.eu; website:
ad.easa.europa.eu. It is also available at
regulations.gov under Docket No. FAA–
2024–1691.
• You may view this material at the
FAA, Airworthiness Products Section,
Operational Safety Branch, 1200 District
Avenue, Burlington, MA 01803. For
information on the availability of this
material at the FAA, call (817) 222–
5110. It is also available at
regulations.gov under Docket No. FAA–
2024–1691.
FOR FURTHER INFORMATION CONTACT:
David Bergeron, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; phone:
(860) 386–1805; email:
David.J.Bergeron@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to all Safran Model Makila 1A,
Makila 1A1, and Makila 1A2 engines.
The NPRM published in the Federal
Register on June 20, 2024 (89 FR 51858).
The NPRM was prompted by EASA AD
2023–0218, dated December 19, 2023
(EASA AD 2023–0218) (also referred to
as the MCAI), issued by EASA, which
is the Technical Agent for the Member
States of the European Union. The
MCAI states that it has been determined
that the accumulated service life of
certain critical parts was
underestimated. To address this
potential unsafe condition, the
manufacturer published service
information that identifies the affected
parts and provides instructions for
recalculating the service life and
replacing the affected parts. The MCAI
specifies determining the recalculated
service life of the affected parts and
replacing if necessary. The MCAI also
specifies conditions for installing the
PO 00000
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Fmt 4700
Sfmt 4700
affected parts. This unsafe condition, if
not addressed, could lead to operation
of the affected parts beyond the part life,
which could cause the failure of affected
parts, possibly resulting in uncontained
debris release with consequent damage
to the helicopter and reduced control of
the helicopter.
In the NPRM, the FAA proposed to
require determining the recalculated
service life of certain critical parts,
replacing the parts if necessary, and
specified conditions for installing the
parts. The FAA is issuing this AD to
address the unsafe condition on these
products.
You may examine the MCAI in the
AD docket at regulations.gov under
Docket No. FAA–2024–1691.
Discussion of Final Airworthiness
Directive
Comments
The FAA received no comments on
the NPRM or on the determination of
the costs.
Conclusion
These products have been approved
by the aviation authority of another
country and are approved for operation
in the United States. Pursuant to the
FAA’s bilateral agreement with this
State of Design Authority, it has notified
the FAA of the unsafe condition
described in the MCAI referenced
above. The FAA reviewed the relevant
data and determined that air safety
requires adopting this AD as proposed.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these
products. Except for minor editorial
changes, this AD is adopted as proposed
in the NPRM.
Material Incorporated by Reference
Under 1 CFR Part 51
The FAA reviewed EASA AD 2023–
0218, which specifies determining the
recalculated service life of affected parts
and replacing the affected parts, if
necessary. EASA AD 2023–0218 also
specifies conditions for installing the
affected parts. This material 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.
Costs of Compliance
The FAA estimates that this AD
affects 0 engines installed on helicopters
of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
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]]>Agencies
[Federal Register Volume 89, Number 204 (Tuesday, October 22, 2024)]
[Rules and Regulations]
[Pages 84267-84272]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-24370]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-0759; Project Identifier AD-2023-01040-T;
Amendment 39-22857; AD 2024-19-15]
RIN 2120-AA64
Airworthiness Directives; Safran Aerosystems (Formerly AVOX
Systems Inc.; Scott Aviation) Oxygen Cylinder and Valve Assemblies, and
Oxygen Valve Assemblies
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2023-13-
11, which applied to certain AVOX Systems Inc. (formerly Scott
Aviation) oxygen cylinder and valve assemblies, and oxygen valve
assemblies, installed on but not limited to various transport
airplanes. AD 2023-13-11 required inspecting the oxygen valve
assemblies, and oxygen cylinder and valve assemblies, to determine the
serial number of the valve, cylinder, and entire assembly; inspecting
certain assemblies and parts for correct spacing of the gap between the
bottom of the packing retainer and top of the valve body on the
assemblies, and replacing assemblies having unacceptable gaps. AD 2023-
13-11 also limited the installation of affected parts and required
reporting inspection results and returning certain assemblies to the
manufacturer. This AD was prompted by the determination that additional
assemblies and parts are subject to the unsafe condition. This AD
requires the actions specified in AD 2023-13-11 and expands the list of
affected assemblies and parts. The FAA is issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective November 26, 2024.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of November 26,
2024.
The Director of the Federal Register approved the incorporation by
reference of certain other publications listed in this AD as of
September 5, 2023 (88 FR 50011, August 1, 2023).
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2024-0759; 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, any comments received, and other
information. The 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.
Material Incorporated by Reference:
For AVOX and Safran Aerosystems material identified in
this AD, contact AVOX Systems Inc., 225 Erie Street, Lancaster, NY
14086; telephone 716-683-5100; website safranaerosystems.com.
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 206-231-3195. It is also available at regulations.gov under
Docket No. FAA-2024-0759.
FOR FURTHER INFORMATION CONTACT: Gabriel Kim, Aviation Safety Engineer,
FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-
228-7300; email [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2023-13-11, Amendment 39-22496 (88 FR
50011, August 1, 2023) (AD 2023-13-11). AD 2023-13-11 applied to
certain AVOX Systems Inc. (formerly Scott Aviation) oxygen cylinder and
valve assemblies, and oxygen valve assemblies, installed on but not
limited to various transport airplanes. AD 2023-13-11 was prompted by
reports of cylinder and valve assemblies having oxygen leakage from the
valve assembly vent hole, caused by the absence of a guide that
maintains appropriate spacing between certain parts, and by a
determination that additional assemblies and parts are affected by the
unsafe condition addressed by AD 2022-04-09, Amendment 39-21951 (87 FR
10958, February 28, 2022) (AD 2022-04-09) (which was superseded by AD
2023-13-11).
The NPRM published in the Federal Register on March 25, 2024 (89 FR
20558). The NPRM was prompted by a report that the manufacturer
identified additional assemblies and parts subject to the unsafe
condition. In the NPRM, the FAA proposed to continue to require the
actions specified in AD 2023-13-11 and require similar actions for
those additional assemblies and parts. The FAA is issuing this AD to
address oxygen leakage from the cylinder and valve assemblies, which
could result in decreased or insufficient oxygen supply during a
depressurization event; and heating or flow friction, which could cause
an ignition event in the valve assembly.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from four commenters, including Alaska
Airlines (Alaska), American Airlines, Cathay Pacific Airways, Delta Air
Lines (Delta), and SIAEC (SIA Engineering Company). The following
presents the comments received on the NPRM and the FAA's response to
each comment.
Request To Reference Later Revisions of Material Identified as Credit
Alaska requested adding the required revisions of the material
(identified in paragraphs (l)(1) through (3) of the proposed AD) to the
group of material identified as acceptable material in paragraph (p)(3)
of the proposed AD for actions accomplished before the effective date
of this AD.
The FAA disagrees with the request to revise paragraph (p)(3) of
this AD. A global alternative method of compliance (AMOC) letter, 753-
23-00200, was issued for AD 2023-13-11 that identified the required
material in paragraphs (l)(1) through (3) of this AD as an acceptable
AMOC. Accomplishment of the required material before the effective date
of this AD to comply with the requirements of this AD is addressed by
paragraph (f) of this AD. Paragraph (f) of this AD allows for the use
of the required material before the effective date of this AD. No
change to the AD has been made in this regard.
Request for Clarification on Acceptable Material for Credit Conclusion
SIAEC asked if credit can be granted for the actions specified in
paragraphs (h) and (i) of the proposed AD if Revision 03 of the
material was used.
The FAA agrees to clarify. Paragraphs (h) and (i) of this AD still
reference Revision 03 of the material as the primary means of
compliance for those
[[Page 84268]]
parts identified in Appendices 1 or 2 of the referenced material.
Paragraph (p) of this AD references the other revision levels that are
acceptable for credit if they were used before certain effective dates.
Paragraph (f) of this AD allows for the use of the required material
before the effective date of this AD. No change to this AD is necessary
in this regard.
Request To Require Actions for All Serial Numbers Instead of List of
Affected Serial Numbers
American Airlines requested revising the applicability of the
proposed AD to apply to all serial numbers of the affected part
numbers, instead of adding groups of additional serial numbers in
superseding ADs. Alaska requested revising the requirements for the
serial number inspection, in particular, the ones in Appendix 3 of the
required material referenced in paragraph (l) of the proposed AD.
Alaska explained that the reading and recording of the serial numbers
in three different places on the bottle leads to numerous discrepancies
by personnel, which then leads to additional time spent trying to
review all the numbers and identify the affected airplanes, possibly
leading to affected bottles remaining on the airplane longer before
being removed. Alaska suggested that a check for the manufacturer date,
and then if a bottle has an affected manufacture date, an inspection to
determine if the valve has a blue dot, would be sufficient to determine
if an affected bottle is installed on the airplane. Alaska also
suggested that once an affected bottle is found, the operator could
then choose to accomplish the gap check and record the required serial
numbers, or assume all affected bottles are suspect, and then send any
suspected bottle back to the vendor instead of doing a gap check and
subsequent serial number record-keeping.
The FAA does not agree to expand the applicability. Revising the
applicability to refer to the date of manufacture instead of the serial
numbers that must be inspected would increase the burden on some
operators. However, operators choosing to inspect all the serial
numbers of a part number may apply for an AMOC using the procedures
specified in paragraph (q) of this AD. No changes to this AD have been
made in this regard.
Request for Additional Compliance Time for Replacing Affected Parts
Alaska requested a revision to extend the compliance time to at
least 90 days due to the large increase in number of affected bottles
and potential effect on the limited supply of spare bottles. Alaska
reasoned that a compliance time of 90 days would help repair vendors
turn around the repair of faulty bottles in a timely manner. Although
Alaska did not specify what action or paragraph the referenced
compliance time would be for, the FAA infers that Alaska is referencing
the replacement compliance time specified in paragraph (m)(2) of the
proposed AD.
The FAA disagrees with the request. A global AMOC letter, 753-23-
00200, was provided in December 2023 to provide relief for using later
revisions of the material referenced in AD 2023-13-11, so knowledge of
the additional numbers of affected bottles identified in the later
revisions of the material would have been available since December
2023. In addition, the compliance time for most of the bottles affected
by AD 2023-13-11 would have elapsed in early November 2023. Replacement
before further flight ensures that airplanes are not knowingly flying
with an unsafe condition. Operators may also apply for an AMOC under
the provisions of paragraph (q) of this AD. The FAA has not changed the
AD in this regard.
Request To Remove Inspection Report Requirement
Delta requested that the inspection report that was specified in
paragraphs (j)(1) and (n)(1) of the proposed AD be removed. Delta
pointed to guidance in the AD Manual (FAA-IR-M-8040.1C) (https://drs.faa.gov/browse/excelExternalWindow/66DDD8E1D2E95DB3862577270062AABD.0001) that describes the general
conditions for requiring inspection reports, and contrasted that with
the material's description of the problem with the affected valve
assemblies and the proposed AD's proposed requirements as the rationale
for removing the inspection report.
The FAA agrees to remove the inspection report that was proposed in
paragraphs (j)(1) and (n)(1) of the proposed AD for the reasons
provided by the commenter. The subsequent paragraph identifiers have
been revised, and the cost estimate has been updated accordingly.
Request To Address Discrepancy in Serial Numbers in Appendix of
Material
SIAEC stated that there is a discrepancy within the tables of
Appendix 3 of Safran Aerosystems Alert Service Bulletin 10015804-35-01,
Revision 04, dated November 9, 2023. SIAEC noted that some of the
affected valve serial numbers are erroneously listed in the affected
``Cylinder Serial #'' columns in the tables for the Cylinder and Valve
assemblies P/Ns 89794077 and 891511-14.
The FAA agrees there are discrepancies in the serial number lists.
Paragraph (l)(1) of this AD has been revised to correct the
discrepancies.
Request for Clarification of Credit
Cathay Pacific Airways noted that the expanded serial number list
from the latest revision of the Safran/AVOX service bulletins has a
manufacturing date range from 2011 to 2017. The commenter asked whether
the actions specified in the latest Safran/AVOX service bulletin must
be redone on an affected serial number if maintenance can show that the
part has been overhauled already.
The FAA contacted Safran for additional information regarding the
comment, and provides the following clarification. The ``overhaul kit''
does not always have the necessary parts and therefore does not meet
the intent of this AD. P/N 10015804 is a guide part number. If this
part is missing, the gap check will fail. However, if the tank
undergoes an overhaul as outlined in the Component Maintenance Manual
(specified in paragraph 1.K of the applicable service bulletin), it
will be equipped with the necessary guide, reassembled, and tested for
leaks and hydrostatic pressure. This process aligns with the intent of
this AD.
Additional Changes to This Final Rule
The FAA corrected the name of the publisher of the material
identified in paragraphs (l)(1) through (3) of this AD from AVOX
Systems Inc. to Safran Aerosystems. The FAA has also revised references
to the manufacturer's name specified throughout this final rule to
identify the manufacturer name as published in the most recent material
for the affected models.
Conclusion
The FAA reviewed the relevant data, considered any comments
received, and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products. Except for minor editorial changes, and
any other changes described previously, this AD is adopted as proposed
in the NPRM. None of the changes will increase the economic burden on
any operator.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed the following material. This material specifies
procedures for an inspection to
[[Page 84269]]
determine the serial numbers of the oxygen cylinder and valve
assemblies, and the oxygen valve assemblies, a detailed inspection for
correct spacing of the gap between the bottom of the packing retainer
and top of the valve body on the assemblies, parts marking, inspection
report, and return of parts to the manufacturer. These documents are
distinct since they apply to different assembly part numbers.
Safran Aerosystems Alert Service Bulletin 10015804-35-01,
Revision 04, dated November 9, 2023.
Safran Aerosystems Alert Service Bulletin 10015804-35-02,
Revision 06, dated August 30, 2023.
Safran Aerosystems Alert Service Bulletin 10015804-35-03,
Revision 05, dated September 29, 2023.
This AD also requires the following material, which the Director of
the Federal Register approved for incorporation by reference as of
September 5, 2023 (88 FR 50011, August 1, 2023).
AVOX Systems Inc. Alert Service Bulletin 10015804-35-01,
Revision 03, dated June 7, 2021.
AVOX Systems Inc. Alert Service Bulletin 10015804-35-02,
Revision 03, dated March 11, 2022.
AVOX Systems Inc. Alert Service Bulletin 10015804-35-03,
Revision 03, dated June 18, 2021.
This material 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.
Costs of Compliance
The FAA estimates that this AD affects 3,777 oxygen cylinder and
valve assemblies, and oxygen valve assemblies, installed on various
transport category airplanes of U.S. registry. The FAA estimates the
following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Serial number inspection 1 work-hour x $85 None................. $85 $321,045
(retained action from AD per hour = $85.
2023[dash]13[dash]11).
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary actions
that would be required based on the results of the inspection. 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
----------------------------------------------------------------------------------------------------------------
Detailed inspection........................... 1 work-hour x $85 per hour = $85 $0 $85
Replacement................................... 1 work-hour x $85 per hour = $85 * 85
Return of parts............................... 1 work-hour x $85 per hour = $85 ** 50 135
----------------------------------------------------------------------------------------------------------------
* The FAA has received no definitive data on the parts cost for the on-condition replacement.
** The FAA has received no definitive data to provide cost estimates for the on-condition return of parts,
except the FAA estimates that it would take about 1 work-hour per product to comply with the associated
paperwork necessary for the return of parts and cost approximately $50 to ship.
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this 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. 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 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) 2013-13-11, Amendment 39-22496
(88 FR 50011, August 1, 2023); and
[[Page 84270]]
0
b. Adding the following new AD:
2024-19-15 Safran Aerosystems (formerly AVOX Systems Inc.; Scott
Aviation): Amendment 39-22857; Docket No. FAA-2024-0759; Project
Identifier AD-2023-01040-T.
(a) Effective Date
This airworthiness directive (AD) is effective November 26,
2024.
(b) Affected ADs
This AD replaces AD 2023-13-11, Amendment 39-22496 (88 FR 50011,
August 1, 2023) (AD 2023-13-11).
(c) Applicability
This AD applies to Safran Aerosytems (formerly AVOX Systems
Inc.; Scott Aviation) oxygen cylinder and valve assemblies having
part number (P/N) 89794050, 89794077, 89794015, 891511-14, 806835-
01, 807982-01, 808433-01, or 891311-14; and oxygen valve assemblies
(body and gage assemblies) having P/N 807206-01. These assemblies
might be installed on, but not limited to, the aircraft identified
in paragraphs (c)(1) through (12) of this AD, certificated in any
category.
(1) Airbus SAS Model A300 B2-1A, B2-1C, B2K-3C, B2-203, B4-2C,
B4-103, and B4-203 airplanes.
(2) Airbus SAS Model A300 B4-601, B4-603, B4-620, B4-622, B4-
605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes.
(3) Airbus SAS Model A310-203, -204, -221, -222, -304, -322, -
324, and -325 airplanes.
(4) Airbus SAS Model A318-111, -112, -121, and -122 airplanes.
(5) Airbus SAS Model A319-111, -112, -113, -114, -115, -131, -
132, -133, and -151N airplanes.
(6) Airbus SAS Model A320-211, -212, -214, -216, -231, -232, -
233, -251N, -252N, -253N, -271N, -272N, and -273N airplanes.
(7) Airbus SAS Model A321-111, -112, -131, -211, -212, -213, -
231, -232, -251N, -252N, -253N, -271N, -272N, -251NX, -252NX, -
253NX, -271NX, and -272NX airplanes.
(8) Airbus SAS Model A330-201, -202, -203, -223, -243, -301, -
302, -303, -321, -322, -323, -341, -342, -343, and -941 airplanes.
(9) Airbus Model A340-211, -212, -213, -311, -312, -313, -541,
and -642 airplanes.
(10) ATR-GIE Avions de Transport R[eacute]gional Model ATR42-
200, -300, -320, and -500 airplanes.
(11) ATR-GIE Avions de Transport R[eacute]gional Model ATR72-
101, -102, -201, -202, -211, -212, and -212A airplanes.
(12) The Boeing Company Model 747-8 series airplanes.
(d) Subject
Air Transport Association (ATA) of America Code 35, Oxygen.
(e) Unsafe Condition
This AD was prompted by reports of cylinder and valve assemblies
having oxygen leakage from the valve assembly vent hole, caused by
the absence of a guide that maintains appropriate spacing between
certain parts, and by the manufacturer identifying additional
assemblies and parts affected by the unsafe condition. The FAA is
issuing this AD to address oxygen leakage from cylinder and valve
assemblies. The unsafe condition, if not addressed, could result in
decreased or insufficient oxygen supply during a depressurization
event; and heating or flow friction, which could cause an ignition
event in the valve assembly.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Definition of Detailed Inspection, With No Changes
This paragraph restates the requirements of paragraph (g) of AD
2023-13-11, with no changes. For the purposes of this AD, a detailed
inspection is an intensive examination of a specific item,
installation, or assembly to detect damage, failure, or
irregularity. Available lighting is normally supplemented with a
direct source of good lighting at an intensity deemed appropriate.
Inspection aids such as mirror, magnifying lenses, etc., may be
necessary. Surface cleaning and elaborate procedures may be
required.
(h) Retained Identification of Affected Cylinder and Valve Assemblies,
With Updated Language
This paragraph restates the requirements of paragraph (h) of AD
2023-13-11, with updated language. Within 60 days after September 5,
2023 (the effective date of AD 2023-13-11), inspect the oxygen valve
assemblies, and oxygen cylinder and valve assemblies, to determine
if the serial numbers of the valve, cylinder, and entire assembly,
are listed in Appendix 1 or Appendix 2, ``Affected Shipments,'' of
the applicable material identified in paragraphs (h)(1) through (3)
of this AD. A review of airplane maintenance records is acceptable
in lieu of this inspection if the serial numbers can be conclusively
determined from that review.
(1) AVOX Systems Inc. Alert Service Bulletin 10015804-35-01,
Revision 03, dated June 7, 2021.
(2) AVOX Systems Inc. Alert Service Bulletin 10015804-35-02,
Revision 03, dated March 11, 2022.
(3) AVOX Systems Inc. Alert Service Bulletin 10015804-35-03,
Revision 03, dated June 18, 2021.
(i) Retained Inspection of the Gap, Parts Marking Actions, and
Replacement, With Updated Language
This paragraph restates the requirements of paragraph (i) of AD
2023-13-11, with updated language. If, during any inspection or
records review required by paragraph (h) of this AD, any oxygen
valve assembly, valve or cylinder of an oxygen cylinder and valve
assembly, or oxygen cylinder and valve assembly having an affected
serial number is found: Before further flight, do a detailed
inspection for correct spacing of the gap between the bottom of the
packing retainer and top of the valve body, in accordance with
paragraph 3.C. of the Accomplishment Instructions of the applicable
material identified in paragraphs (h)(1) through (3) of this AD.
(1) If the gap is found to be acceptable, as defined in the
applicable material identified in paragraphs (h)(1) through (3) of
this AD, before further flight, do the parts marking actions in
accordance with paragraph 3.D.(1) of the Accomplishment Instructions
of the applicable material identified in paragraphs (h)(1) through
(3) of this AD.
(2) If the gap is found to be unacceptable, as defined in the
material identified in paragraphs (h)(1) through (3) of this AD,
before further flight, remove the affected assembly, in accordance
with paragraphs 3.D.(2) or 3.D.(3), as applicable, of the
Accomplishment Instructions of the applicable material identified in
paragraphs (h)(1) through (3) of this AD; and replace with a
serviceable assembly.
(j) Retained Return of Parts, With Updated Language
This paragraph restates the requirement to return parts, as
specified in paragraph (j)(2) of AD 2023-13-11, with updated
language. If, during the inspection required by paragraph (i) of
this AD, any gap is found to be unacceptable, within the applicable
time specified in paragraph (j)(1) or (2) of this AD, return the
assembly to the manufacturer in accordance with paragraph 3.D.(2) or
3.D.(3), as applicable, of the Accomplishment Instructions of the
applicable material identified in paragraphs (h)(1) through (3) of
this AD, except you are not required to contact AVOX Systems Inc.
for shipping instructions.
(1) If the inspection was done on or after September 5, 2023
(the effective date of AD 2023-13-11): Return the assembly within 30
days after the inspection.
(2) If the inspection was done before September 5, 2023 (the
effective date of AD 2023-13-11): Return the assembly within 30 days
after September 5, 2023.
(k) Retained Parts Installation Limitation, With Updated Language
This paragraph restates the provisions of paragraph (k) of AD
2023-13-11, with updated language. As of September 5, 2023 (the
effective date of AD 2023-13-11), no AVOX Systems Inc. oxygen valve
assembly, or valve or cylinder that is part of an oxygen cylinder
and valve assembly, or oxygen cylinder and valve assembly having an
affected serial number identified in Appendix 1, ``Affected
Shipments,'' or Appendix 2, ``Affected Shipments,'' of any AVOX
Systems Inc. material identified in paragraphs (h)(1) through (3) of
this AD may be installed on any airplane unless the requirements of
paragraph (i) of this AD have been accomplished on that affected
assembly.
(l) New Identification of Additional Affected Cylinder and Valve
Assemblies
Within 60 days after the effective date of this AD, inspect the
oxygen valve assemblies, and oxygen cylinder and valve assemblies,
to determine if the serial numbers of the valve, cylinder, and
entire assembly, are listed in Appendix 3, ``Affected Shipments,''
of the applicable material identified in paragraphs
[[Page 84271]]
(l)(1) through (3) of this AD. A review of airplane maintenance
records is acceptable in lieu of this inspection if the serial
numbers can be conclusively determined from that review.
(1) Safran Aerosystem Alert Service Bulletin 10015804-35-01,
Revision 04, dated November 9, 2023, except as specified in
paragraphs (l)(1)(i) and (ii).
(i) In rows 2 through 492 of table tab ``89794077'' in Appendix
3 of Safran Aerosystems Alert Service Bulletin 10015804-35-01,
Revision 04, dated November 9, 2023, the list of numbers in the
``Valve Serial #'' and ``Cylinder Serial #'' columns have been
transposed with each other and the list of numbers in the ``Valve
Part #'' and ``Cylinder Part #'' columns have also been transposed
with each other.
(ii) In rows 2 through 65 of table tab 891511-14 in Appendix 3
of Safran Aerosystems Alert Service Bulletin 10015804-35-01,
Revision 04, dated November 9, 2023, the list of numbers in the
``Valve Serial #'' and ``Cylinder Serial #'' columns have been
transposed with each other, and the list of numbers in the ``Valve
Part #'' and ``Cylinder Part #'' columns have been transposed with
each other.
(2) Safran Aerosystems Alert Service Bulletin 10015804-35-02,
Revision 06, dated August 30, 2023.
(3) Safran Aerosystems Inc. Alert Service Bulletin 10015804-35-
03, Revision 05, dated September 29, 2023.
(m) New Inspection of the Gap, Parts Marking Actions, and Replacement
for Additional Parts
If, during any inspection or records review required by
paragraph (l) of this AD, any oxygen valve assembly, valve or
cylinder of an oxygen cylinder and valve assembly, or oxygen
cylinder and valve assembly having an affected serial number is
found: Before further flight, do a detailed inspection for correct
spacing of the gap between the bottom of the packing retainer and
top of the valve body, in accordance with paragraph 3.C. of the
Accomplishment Instructions of the applicable material identified in
paragraphs (l)(1) through (3) of this AD.
(1) If the gap is found to be acceptable, as defined in the
applicable material identified in paragraphs (l)(1) through (3) of
this AD, before further flight, do the parts marking actions in
accordance with paragraph 3.D.(1) of the Accomplishment Instructions
of the applicable material identified in paragraphs (l)(1) through
(3) of this AD.
(2) If the gap is found to be unacceptable, as defined in the
material identified in paragraphs (l)(1) through (3) of this AD,
before further flight, remove the affected assembly, in accordance
with paragraphs 3.D.(2) or 3.D.(3), as applicable, of the
Accomplishment Instructions of the applicable material identified in
paragraphs (l)(1) through (3) of this AD; and replace with a
serviceable assembly.
(n) New Return of Additional Parts
If, during the inspection required by paragraph (m) of this AD,
any gap is found to be unacceptable, within the applicable time
specified in paragraph (n)(1) or (2) of this AD, return the assembly
to the manufacturer in accordance with paragraph 3.D.(2) or 3.D.(3),
as applicable, of the Accomplishment Instructions of the applicable
material identified in paragraphs (l)(1) through (3) of this AD,
except you are not required to contact Safran Aerosystems for
shipping instructions.
(1) If the inspection was done on or after the effective date of
this AD: Return the assembly within 30 days after the inspection.
(2) If the inspection was done before the effective date of this
AD: Return the assembly within 30 days after the effective date of
this AD.
(o) New Parts Installation Limitation
As of the effective date of this AD, no AVOX Systems Inc. or
Safran Aerosystems oxygen valve assembly, or valve or cylinder that
is part of an oxygen cylinder and valve assembly, or oxygen cylinder
and valve assembly having an affected serial number identified in
Appendix 3, ``Affected Shipments,'' of any Safran Aerosystems Inc.
material identified in paragraphs (l)(1) through (3) of this AD may
be installed on any airplane unless the requirements of paragraph
(m) of this AD have been accomplished on that affected assembly.
(p) Credit for Previous Actions
(1) This paragraph provides credit for the actions specified in
paragraphs (h) or (i) of this AD, if those actions were performed
before September 5, 2023 (the effective date of AD 2023-13-11),
using the material specified in paragraphs (p)(1)(i) through (iii)
of this AD. This material is not incorporated by reference in this
AD.
(i) AVOX Systems Inc. Service Bulletin 10015804-35-01, dated
March 6, 2019; and AVOX Systems Inc. Alert Service Bulletin
10015804-35-01, Revision 01, dated July 9, 2019.
(ii) AVOX Systems Inc. Alert Service Bulletin 10015804-35-02,
Revision 1, dated September 4, 2019.
(iii) AVOX Systems Inc. Service Bulletin 10015804-35-03, dated
April 11, 2019; and AVOX Systems Inc. Alert Service Bulletin
10015804-35-03, Revision 01, dated May 21, 2019.
(2) This paragraph provides credit for the actions specified in
paragraphs (h) or (i) of this AD, if those actions were performed
before September 5, 2023 (the effective date of AD 2023-13-11),
using the material specified in paragraphs (p)(2)(i) through (iii)
of this AD, which was incorporated by reference in AD 2022-04-09.
(i) AVOX Systems Inc. Alert Service Bulletin 10015804-35-01,
Revision 02, dated October 16, 2019.
(ii) AVOX Systems Inc. Alert Service Bulletin 10015804-35-02,
Revision 2, dated October 31, 2019.
(iii) AVOX Systems Inc. Alert Service Bulletin 10015804-35-03,
Revision 02, dated October 15, 2019.
(3) This paragraph provides credit for the actions specified in
paragraphs (h), (i), (l), or (m) of this AD, if those actions were
performed before the effective date of this AD, using the material
specified in paragraphs (p)(3)(i) through (ii) of this AD. This
material is not incorporated by reference in this AD.
(i) AVOX Systems Inc. Alert Service Bulletin 10015804-35-02,
Revision 04, dated June 30, 2023; or Revision 05, dated August 14,
2023.
(ii) AVOX Systems Inc. Alert Service Bulletin 10015804-35-03,
Revision 04, dated June 12, 2023.
(q) 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 East Certification Branch, send it to ATTN:
Program Manager, Continuing Operational Safety, at the address
identified in paragraph (r) of this AD or email to: [email protected].
(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 2023-13-11 are approved as AMOCs for
the corresponding provisions of this AD.
(r) Related Information
(1) For more information about this AD, contact Gabriel Kim,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7300; email [email protected].
(2) Material identified in this AD that is not incorporated by
reference is available at the address specified in paragraph (s)(5)
of this AD.
(s) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the material listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless this AD specifies otherwise.
(3) The following material was approved for IBR on November 26,
2024.
(i) Safran Aerosystems Alert Service Bulletin 10015804-35-01,
Revision 04, dated November 9, 2023.
(ii) Safran Aerosystems Alert Service Bulletin 10015804-35-02,
Revision 06, dated August 30, 2023.
(iii) Safran Aerosystems Alert Service Bulletin 10015804-35-03,
Revision 05, dated September 29, 2023.
(4) The following material was approved for IBR on September 5,
2023 (88 FR 50011, August 1, 2023).
(i) AVOX Systems Inc. Alert Service Bulletin 10015804-35-01,
Revision 03, dated June 7, 2021.
(ii) AVOX Systems Inc. Alert Service Bulletin 10015804-35-02,
Revision 03, dated March 11, 2022.
(iii) AVOX Systems Inc. Alert Service Bulletin 10015804-35-03,
Revision 03, dated June 18, 2021.
(5) For material identified in this AD, contact AVOX Systems
Inc., 225 Erie Street,
[[Page 84272]]
Lancaster, NY 14086; telephone 716-683-5100; website
safranaerosystems.com.
(6) 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 206-231-3195.
(7) You may view this material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].
Issued on September 23, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2024-24370 Filed 10-21-24; 8:45 am]
BILLING CODE 4910-13-P
