Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes, 67523-67525 [2024-18629]

Download as PDF Federal Register / Vol. 89, No. 162 / Wednesday, August 21, 2024 / Rules and Regulations table, in the footnotes, in the third line, ‘‘1’’ should read ‘‘2’’. [FR Doc. C1–2024–16643 Filed 8–20–24; 8:45 am] BILLING CODE 0099–10–D NUCLEAR REGULATORY COMMISSION 10 CFR Part 72 [NRC–2024–0096] RIN 3150–AL17 List of Approved Spent Fuel Storage Casks: Holtec International HI–STORM FW System Certificate of Compliance No. 1032, Amendment No. 7 Nuclear Regulatory Commission. ACTION: Direct final rule; confirmation of effective date. AGENCY: The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of September 25, 2024, for the direct final rule that was published in the Federal Register on July 12, 2024. The direct final rule amended the Holtec International HI–STORM Flood/ Wind Multi-purpose Canister Storage System listing within the ‘‘List of approved spent fuel storage casks’’ to include Amendment No. 7 to Certificate of Compliance No. 1032. DATES: Effective date: The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of September 25, 2024, for the direct final rule that was published in the Federal Register on July 12, 2024. ADDRESSES: Please refer to Docket ID NRC–2024–0096 when contacting the NRC about the availability of information for this action. You may obtain publicly available information related to this action by any of the following methods: • Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC–2024–0096. Address questions about NRC dockets to Helen Chang; telephone: 301–415–3228; email: Helen.Chang@nrc.gov. For technical questions, contact the individual listed in the FOR FURTHER INFORMATION CONTACT section of this document. • NRC’s Agencywide Documents Access and Management System (ADAMS): You may obtain publicly available documents online in the ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/ adams.html. To begin the search, select ‘‘Begin Web-based ADAMS Search.’’ For problems with ADAMS, please contact the NRC’s Public Document Room (PDR) reference staff at 1–800–397–4209, 301– lotter on DSK11XQN23PROD with RULES1 SUMMARY: VerDate Sep<11>2014 15:51 Aug 20, 2024 Jkt 262001 415–4737, or by email to PDR.Resource@nrc.gov. The Amendment No. 7 of Certificate of Compliance No. 1032 and associated changes to the technical specifications, and safety evaluation report can also be viewed in ADAMS under Package Accession No. ML24199A236. • NRC’s PDR: The PDR, where you may examine and order copies of publicly available documents, is open by appointment. To make an appointment to visit the PDR, please send an email to PDR.Resource@nrc.gov or call 1–800–397–4209 or 301–415– 4737, between 8 a.m. and 4 p.m. eastern time, Monday through Friday, except Federal holidays. FOR FURTHER INFORMATION CONTACT: Caylee Kenny, Office of Nuclear Material Safety and Safeguards, telephone: 301–415–7150, email: Caylee.Kenny@nrc.gov; and Yen-Ju Chen, Office of Nuclear Material Safety and Safeguards, telephone: 301–415– 1018, email: Yen-Ju.Chen@nrc.gov. Both are staff of the U.S. Nuclear Regulatory Commission, Washington, DC 20555– 0001. On July 12, 2024 (89 FR 57064), the NRC published a direct final rule amending its regulations in part 72 of title 10 of the Code of Federal Regulations to revise the Holtec International HI– STORM Flood/Wind Multi-purpose Canister Storage System (HI–STORM FW System) listing in the ‘‘List of approved spent fuel storage casks’’ to include Amendment No. 7 to Certificate of Compliance No. 1032. In the direct final rule, the NRC stated that if no significant adverse comments were received, the direct final rule would become effective on September 25, 2024. The NRC did not receive any comments on the direct final rule. Therefore, this direct final rule will become effective as scheduled. SUPPLEMENTARY INFORMATION: Dated: August 16, 2024. For the Nuclear Regulatory Commission. Helen Chang, Acting Chief, Regulatory Analysis and Rulemaking Support Branch, Division of Rulemaking, Environmental, and Financial Support Office of Nuclear Material Safety and Safeguards. [FR Doc. 2024–18752 Filed 8–20–24; 8:45 am] BILLING CODE 7590–01–P PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 67523 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2024–1009; Project Identifier MCAI–2023–01221–T; Amendment 39–22782; AD 2024–14–01] RIN 2120–AA64 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL–600– 2D15 (Regional Jet Series 705) and CL– 600–2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a report that torque wrenches used during production installation of bulkhead fittings on the oxygen lines of the flightcrew oxygen mask stowage boxes and adapter fitting on the oxygen pressure gauge were out of calibration, which resulted in a higher torque level setting than required. This AD requires replacement of the affected oxygen line fittings, as specified in a Transport Canada 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 September 25, 2024. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 25, 2024. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2024–1009; 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 Transport Canada material, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888–663– 3639; email TC.AirworthinessDirectivesSUMMARY: E:\FR\FM\21AUR1.SGM 21AUR1 67524 Federal Register / Vol. 89, No. 162 / Wednesday, August 21, 2024 / Rules and Regulations Consignesdenavigabilite.TC@tc.gc.ca. You may find this material on the Transport Canada website at tc.canada.ca/en/aviation. It is also available at regulations.gov under Docket No. FAA–2024–1009. • 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. FOR FURTHER INFORMATION CONTACT: Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516– 228–7300; email Fatin.R.Saumik@ 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 certain MHI RJ Aviation ULC Model CL–600–2D15 (Regional Jet Series 705) and CL–600–2D24 (Regional Jet Series 900) airplanes. The NPRM published in the Federal Register on April 29, 2024 (89 FR 33297). The NPRM was prompted by AD CF–2023– 75, dated November 28, 2023, issued by Transport Canada, which is the aviation authority for Canada (Transport Canada AD CF–2023–75) (also referred to as the MCAI). The MCAI states MHI RJ Aviation ULC received a quality escape notice from a supplier, reporting that torque wrenches used during production installation of bulkhead fittings on the oxygen lines of the flightcrew oxygen mask stowage boxes and adapter fitting on the oxygen pressure gauge were out of calibration, which resulted in a higher torque level setting than required by drawing. This over-torque could cause damage to the oxygen line fittings which, if not corrected, could cause oxygen leakage before being annunciated and result in lack of oxygen to the flightcrew when needed. In the NPRM, the FAA proposed to require replacement of the affected oxygen line fittings, as specified in Transport Canada AD CF–2023–75. 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–2024–1009. Discussion of Final Airworthiness Directive Comments The FAA received a comment from the Air Line Pilots Association, International (ALPA), who supported the NPRM without change. Conclusion This product has been approved by the aviation authority of another country and is 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, considered the comment 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 this product. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. None of the changes will increase the economic burden on any operator. Related Material Under 1 CFR Part 51 Transport Canada AD CF–2023–75 specifies procedures for replacement of the bulkhead fittings on the oxygen lines of the mask stowage boxes and replacement of the fitting adapter on the oxygen pressure gauge. 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 24 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 6 work-hours × $85 per hour = $510 .......................................................................................... $350 $860 $20,640 lotter on DSK11XQN23PROD with RULES1 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 VerDate Sep<11>2014 15:51 Aug 20, 2024 Jkt 262001 develop on products identified in this rulemaking action. under the criteria of the Regulatory Flexibility Act. Regulatory Findings List of Subjects in 14 CFR Part 39 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 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 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. E:\FR\FM\21AUR1.SGM 21AUR1 Federal Register / Vol. 89, No. 162 / Wednesday, August 21, 2024 / Rules and Regulations § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ 2024–14–01 MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.): Amendment 39– 22782; Docket No. FAA–2024–1009; Project Identifier MCAI–2023–01221–T. (a) Effective Date This airworthiness directive (AD) is effective September 24, 2024. (b) Affected ADs None. (c) Applicability This AD applies to MHI RJ Aviation ULC (Type Certificate previously held by Bombardier, Inc.) Model CL–600–2D15 (Regional Jet Series 705) and CL–600–2D24 (Regional Jet Series 900) airplanes, certificated in any category, as identified in Transport Canada AD CF–2023–75, dated November 28, 2023 (Transport Canada AD CF–2023–75). (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Unsafe Condition This AD was prompted by a report that torque wrenches used during production installation of bulkhead fittings on the oxygen lines of the flightcrew oxygen mask stowage boxes and adapter fitting on the oxygen pressure gauge were out of calibration, which resulted in a higher torque level setting than required. The FAA is issuing this AD to address this over-torque, which could cause damage to the oxygen line fittings. The unsafe condition, if not addressed, could result in oxygen leakage before being annunciated and result in lack of oxygen to the flightcrew when needed. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Transport Canada AD CF– 2023–75. lotter on DSK11XQN23PROD with RULES1 (h) Exception to Transport Canada AD CF– 2023–75 (1) Where Transport Canada AD CF–2023– 75 refers to its effective date, this AD requires using the effective date of this AD. (2) Where Transport Canada AD CF–2023– 75 refers to hours air time, this AD requires using flight hours. (i) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested VerDate Sep<11>2014 15:51 Aug 20, 2024 Jkt 262001 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 International Validation Branch, mail it to the address identified in paragraph (j) of this AD. Information may be emailed to: 9-AVS-NYACO-COS@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, International Validation Branch, FAA; Transport Canada; or MHI RJ Aviation ULC’s Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (j) Additional Information For more information about this AD, contact Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516– 228–7300; email Fatin.R.Saumik@faa.gov. (k) 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. (i) Transport Canada AD CF–2023–75, dated November 28, 2023. (ii) [Reserved] (3) For Transport Canada AD CF–2023–75, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888–663–3639; email TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca. You may find this Transport Canada AD on the Transport Canada website at tc.canada.ca/ en/aviation. (4) 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. (5) 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 July 10, 2024. James D. Foltz, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024–18629 Filed 8–20–24; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 67525 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2024–1006; Project Identifier MCAI–2023–01222–T; Amendment 39–22781; AD 2024–13–07] RIN 2120–AA64 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL–600– 2D15 (Regional Jet Series 705) and CL– 600–2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a notice from a supplier reporting that torque wrenches used to install the air driven generator (ADG) downlock cam nut were out of calibration, which resulted in a higher torque level setting than required during the initial production installation of the affected cam nut. This AD requires replacement of the affected ADG locking cam screw and cam nut, as specified in a Transport Canada 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 September 25, 2024. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 25, 2024. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2024–1006; 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 Transport Canada material, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888–663– 3639; email TC.AirworthinessDirectivesSUMMARY: E:\FR\FM\21AUR1.SGM 21AUR1

Agencies

[Federal Register Volume 89, Number 162 (Wednesday, August 21, 2024)]
[Rules and Regulations]
[Pages 67523-67525]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-18629]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-1009; Project Identifier MCAI-2023-01221-T; 
Amendment 39-22782; AD 2024-14-01]
RIN 2120-AA64


Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate 
Previously Held by Bombardier, Inc.) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain MHI RJ Aviation ULC Model CL-600-2D15 (Regional Jet Series 705) 
and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD was 
prompted by a report that torque wrenches used during production 
installation of bulkhead fittings on the oxygen lines of the flightcrew 
oxygen mask stowage boxes and adapter fitting on the oxygen pressure 
gauge were out of calibration, which resulted in a higher torque level 
setting than required. This AD requires replacement of the affected 
oxygen line fittings, as specified in a Transport Canada 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 September 25, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of September 
25, 2024.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2024-1009; 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 Transport Canada material, contact Transport Canada, 
Transport Canada National Aircraft Certification, 159 Cleopatra Drive, 
Nepean, Ontario K1A 0N5, Canada; telephone 888-663-3639; email 
TC.AirworthinessDirectives-

[[Page 67524]]

[email protected]. You may find this material on the 
Transport Canada website at tc.canada.ca/en/aviation. It is also 
available at regulations.gov under Docket No. FAA-2024-1009.
     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.

FOR FURTHER INFORMATION CONTACT: Fatin Saumik, 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 by adding an AD that would apply to certain MHI RJ Aviation 
ULC Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 
(Regional Jet Series 900) airplanes. The NPRM published in the Federal 
Register on April 29, 2024 (89 FR 33297). The NPRM was prompted by AD 
CF-2023-75, dated November 28, 2023, issued by Transport Canada, which 
is the aviation authority for Canada (Transport Canada AD CF-2023-75) 
(also referred to as the MCAI). The MCAI states MHI RJ Aviation ULC 
received a quality escape notice from a supplier, reporting that torque 
wrenches used during production installation of bulkhead fittings on 
the oxygen lines of the flightcrew oxygen mask stowage boxes and 
adapter fitting on the oxygen pressure gauge were out of calibration, 
which resulted in a higher torque level setting than required by 
drawing. This over-torque could cause damage to the oxygen line 
fittings which, if not corrected, could cause oxygen leakage before 
being annunciated and result in lack of oxygen to the flightcrew when 
needed.
    In the NPRM, the FAA proposed to require replacement of the 
affected oxygen line fittings, as specified in Transport Canada AD CF-
2023-75. 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-2024-1009.

Discussion of Final Airworthiness Directive

Comments

    The FAA received a comment from the Air Line Pilots Association, 
International (ALPA), who supported the NPRM without change.

Conclusion

    This product has been approved by the aviation authority of another 
country and is 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, considered the 
comment 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 this product. Except for minor editorial changes, 
this AD is adopted as proposed in the NPRM. None of the changes will 
increase the economic burden on any operator.

Related Material Under 1 CFR Part 51

    Transport Canada AD CF-2023-75 specifies procedures for replacement 
of the bulkhead fittings on the oxygen lines of the mask stowage boxes 
and replacement of the fitting adapter on the oxygen pressure gauge. 
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 24 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
6 work-hours x $85 per hour = $510...........................            $350             $860          $20,640
----------------------------------------------------------------------------------------------------------------

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.

[[Page 67525]]

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive:

2024-14-01 MHI RJ Aviation ULC (Type Certificate Previously Held by 
Bombardier, Inc.): Amendment 39-22782; Docket No. FAA-2024-1009; 
Project Identifier MCAI-2023-01221-T.

(a) Effective Date

    This airworthiness directive (AD) is effective September 24, 
2024.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to MHI RJ Aviation ULC (Type Certificate 
previously held by Bombardier, Inc.) Model CL-600-2D15 (Regional Jet 
Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes, 
certificated in any category, as identified in Transport Canada AD 
CF-2023-75, dated November 28, 2023 (Transport Canada AD CF-2023-
75).

(d) Subject

    Air Transport Association (ATA) of America Code 35, Oxygen.

(e) Unsafe Condition

    This AD was prompted by a report that torque wrenches used 
during production installation of bulkhead fittings on the oxygen 
lines of the flightcrew oxygen mask stowage boxes and adapter 
fitting on the oxygen pressure gauge were out of calibration, which 
resulted in a higher torque level setting than required. The FAA is 
issuing this AD to address this over-torque, which could cause 
damage to the oxygen line fittings. The unsafe condition, if not 
addressed, could result in oxygen leakage before being annunciated 
and result in lack of oxygen to the flightcrew when needed.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Requirements

    Except as specified in paragraph (h) of this AD: Comply with all 
required actions and compliance times specified in, and in 
accordance with, Transport Canada AD CF-2023-75.

(h) Exception to Transport Canada AD CF-2023-75

    (1) Where Transport Canada AD CF-2023-75 refers to its effective 
date, this AD requires using the effective date of this AD.
    (2) Where Transport Canada AD CF-2023-75 refers to hours air 
time, this AD requires using flight hours.

(i) Additional AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Validation Branch, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. In accordance with 14 CFR 39.19, send your request to your 
principal inspector or responsible Flight Standards Office, as 
appropriate. If sending information directly to the manager of the 
International Validation Branch, mail it to the address identified 
in paragraph (j) of this AD. Information may be emailed to: [email protected]. Before using any approved AMOC, notify your 
appropriate principal inspector, or lacking a principal inspector, 
the manager of the responsible Flight Standards Office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions must be 
accomplished using a method approved by the Manager, International 
Validation Branch, FAA; Transport Canada; or MHI RJ Aviation ULC's 
Transport Canada Design Approval Organization (DAO). If approved by 
the DAO, the approval must include the DAO-authorized signature.

(j) Additional Information

    For more information about this AD, contact Fatin Saumik, 
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; email 
[email protected].

(k) 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.
    (i) Transport Canada AD CF-2023-75, dated November 28, 2023.
    (ii) [Reserved]
    (3) For Transport Canada AD CF-2023-75, contact Transport 
Canada, Transport Canada National Aircraft Certification, 159 
Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888-663-
3639; email [email protected]. You may find this Transport 
Canada AD on the Transport Canada website at tc.canada.ca/en/
aviation.
    (4) 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.
    (5) 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 July 10, 2024.
James D. Foltz,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-18629 Filed 8-20-24; 8:45 am]
BILLING CODE 4910-13-P
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