Airworthiness Directives; Bombardier, Inc., Airplanes, 89633-89636 [2023-28590]

Download as PDF Federal Register / Vol. 88, No. 248 / Thursday, December 28, 2023 / Proposed Rules 1st-stage hub, HPT 2nd-stage hub, HPC IBR–7, and HPC IBR–8 for cracks and replacement if necessary. The NPRM also proposed to require accelerated replacement of the HPC IBR–7, HPC IBR–8, HPC rear hub, HPT 1st-stage hub, HPT 1st-stage air seal, HPT 1st-stage blade retaining plate, HPT 2nd-stage hub, HPT 2nd-stage blade retaining plate, and HPT 2nd-stage rear seal. The proposed actions were intended to address failure of the HPT 1st-stage hub, HPT 2nd-stage hub, HPC IBR–7, and HPC IBR–8, which could result in uncontained hub failure, release of highenergy debris, damage to the engine, damage to the airplane, and loss of the airplane. Comments The FAA received comments on the NPRM. However, due to the FAA’s determination that it is necessary to withdraw and issue a new NPRM, the comments will be copied to Docket No. FAA–2023–2401 and addressed in the final rule for that AD action. Additionally, the FAA requests that the commenters review the new NPRM at Docket No. FAA–2023–2401. FAA’s Conclusions khammond on DSKJM1Z7X2PROD with PROPOSALS Upon further consideration, the FAA has determined that the NPRM does not adequately address the identified unsafe condition. Accordingly, the NPRM is withdrawn. Regulatory Findings Since this action only withdraws an NPRM, it is neither a proposed nor a final rule. This action therefore is not covered under Executive Order 12866, the Regulatory Flexibility Act, or DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). Jkt 262001 Accordingly, the notice of proposed rulemaking (Docket No. FAA–2023– 2237), which was published in the Federal Register on December 12, 2023 (88 FR 86088), is withdrawn. ■ Issued on December 21, 2023. Caitlin Locke, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023–28703 Filed 12–22–23; 4:15 pm] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Since issuance of the NPRM, the FAA has received information from Pratt & Whitney that an error was inadvertently included in the removal times for some of the HPT 1st-stage and 2nd-stage hubs, which would have required removal significantly later than necessary. Because the removal timeframe needed to be shortened, the FAA determined it is necessary to withdraw the NPRM and issue a new NPRM for the unsafe condition with the correct compliance times. Withdrawal of the NPRM constitutes only such action and does not preclude the FAA from further rulemaking on this issue, nor does it commit the FAA to any course of action in the future. 19:37 Dec 27, 2023 The Withdrawal 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2023–2402; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this NPRM, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The street address for Docket Operations is listed above. Material Incorporated by Reference Actions Since the NPRM Was Issued VerDate Sep<11>2014 List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 89633 Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2023–2402; Project Identifier MCAI–2023–00370–T] RIN 2120–AA64 Airworthiness Directives; Bombardier, Inc., Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL– 600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes. This proposed AD was prompted by a report indicating that a new filter plate connector for the nose wheel steering (NWS) system electronic control module (ECM) does not meet certain certification requirements. This proposed AD would require replacing all affected noncompliant ECMs. This proposed AD would also prohibit the installation of affected parts under certain conditions. The FAA is proposing this AD to address the unsafe condition on these products. SUMMARY: The FAA must receive comments on this proposed AD by February 12, 2024. DATES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– ADDRESSES: PO 00000 Frm 00007 Fmt 4702 Sfmt 4702 • For service information identified in this NPRM, contact Bombardier Business Aircraft Customer Response Center, 400 Coˆte-Vertu Road West, Dorval, Que´bec H4S 1Y9, Canada; telephone 514–855–2999; email ac.yul@ aero.bombardier.com; website bombardier.com. • You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. FOR FURTHER INFORMATION CONTACT: Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (516) 228–7300; email: 9-avs-nyacocos@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include ‘‘Docket No. FAA–2023–2402; Project Identifier MCAI–2023–00370–T’’ at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend the proposal because of those comments. Except for Confidential Business Information (CBI) as described in the following paragraph, and other information as described in 14 CFR 11.35, the FAA will post all comments received, without change, to regulations.gov, including any personal information you provide. The agency will also post a report summarizing each E:\FR\FM\28DEP1.SGM 28DEP1 89634 Federal Register / Vol. 88, No. 248 / Thursday, December 28, 2023 / Proposed Rules substantive verbal contact received about this NPRM. Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this NPRM contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as ‘‘PROPIN.’’ The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI should be sent to Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (516) 228–7300; email: 9-avs-nyaco-cos@faa.gov. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. Background Transport Canada, which is the aviation authority for Canada, has issued Transport Canada AD CF–2023– 14R1, dated May 15, 2023 (Transport Canada AD CF–2023–14R1) (also referred to after this as the MCAI), to correct an unsafe condition on certain Bombardier, Inc., Model CL–600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes. The MCAI states that the manufacturer of the NWS system ECM, part number (P/N) 601–86100–27, introduced a new filter plate connector that does not meet the certification requirements related to the susceptibility of electronic components to high intensity radiated field. This non-compliant filter plate connector, if not replaced, could result in a malfunction of the NWS system causing potential un-commanded steering or lateral excursion from the runway. The FAA is proposing 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–2023–2402. Related Service Information Under 1 CFR Part 51 The FAA reviewed the following Bombardier service information. • Service Bulletin 604–32–032, dated October 18, 2021. • Service Bulletin 605–32–009, dated October 18, 2021. • Service Bulletin 650–32–006, dated October 18, 2021. This service information specifies procedures for removing and replacing all affected non-compliant ECMs, P/N 601–86100–27. These documents are distinct since they apply to different airplane configurations. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. FAA’s Determination 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 and service information referenced above. The FAA is issuing this NPRM after determining that the unsafe condition described previously is likely to exist or develop on other products of the same type design. Proposed AD Requirements in This NPRM This proposed AD would require accomplishing the actions specified in the service information already described. This proposed AD would also prohibit the installation of affected parts under certain conditions. Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 164 airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost 6 work-hours × $85 per hour = $510 .......................................................................................... The FAA has included all known costs in its cost estimate. According to the manufacturer, however, some or all of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected operators. khammond on DSKJM1Z7X2PROD with PROPOSALS 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 VerDate Sep<11>2014 19:37 Dec 27, 2023 Jkt 262001 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 The FAA determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 $75,972 Cost per product $76,482 Cost on U.S. operators $12,543,048 responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Would not affect intrastate aviation in Alaska, and (3) Would not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. E:\FR\FM\28DEP1.SGM 28DEP1 Federal Register / Vol. 88, No. 248 / Thursday, December 28, 2023 / Proposed Rules 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 adding the following new airworthiness directive: ■ Bombardier, Inc.: Docket No. FAA–2023– 2402; Project Identifier MCAI–2023– 00370–T. (a) Comments Due Date The FAA must receive comments on this airworthiness directive (AD) by February 12, 2024. Model khammond on DSKJM1Z7X2PROD with PROPOSALS (d) Subject Air Transport Association (ATA) of America Code 32, Landing gear. (e) Unsafe Condition This AD was prompted by a report indicating that a new filter plate connector for the nose wheel steering (NWS) system electronic control module (ECM) does not meet certain certification requirements. The FAA is issuing this AD to address this noncompliant filter plate connector, which, if not replaced, could result in a malfunction of the NWS system causing potential uncommanded steering or lateral excursion from the runway. 6050 and subsequent 5701 through 5990 5301 through 5665 (1) If the serial number of the ECM is listed in Table 1 of Section 1.A. of the applicable service information or is not reidentified on the nameplate as SB–1, then the actions of paragraph (h) of this AD are required. (2) If the serial number of the ECM is not listed in Table 1 of Section 1.A. of the applicable service information or is reidentified on the nameplate as SB–1, then the actions of paragraph (h) of this AD are not required. (h) Replacement For airplanes identified in paragraph (g)(1) of this AD: Do the actions specified in paragraphs (h)(1) and (2) of this AD. (1) Within 24 months after the effective date of this AD: Replace the ECM, P/N 601– 86100–27, identified in paragraph (g)(1) of this AD, in accordance with Section 2.C. Part B of the Accomplishment Instructions of the applicable service information listed in figure 1 to the introductory text of paragraph (g) of this AD. (2) Prior to return to service, complete the operational test of the NWS system in accordance with Section 2.D. of the Accomplishment Instructions of the applicable service information listed in figure 1 to the introductory text of paragraph (g) of this AD. (i) Parts Installation Limitation As of the effective date of this AD, it is prohibited to install ECM, P/N 601–86100– 27, as a replacement part, if the serial number is listed in Table 1 of Section 1.A. of the applicable service information listed in figure 19:37 Dec 27, 2023 (c) Applicability This AD applies to Bombardier, Inc., Model CL–600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes, certificated in any category, with serial numbers 5301 through 5665 inclusive, 5701 through 5990 inclusive, and 6050 and subsequent. Serial Numbers CL-600-2B16 CL-600-2B 16 CL-600-2B16 VerDate Sep<11>2014 (f) Compliance (b) Affected ADs None. Jkt 262001 Within 24 months after the effective date of this AD: Inspect the serial number of the ECM, P/N 601–86100–27, in accordance with Section 2.B. Part A of the Accomplishment Instructions of the applicable service information listed in figure (1) to the introductory text of paragraph (g) of this AD to determine if the serial number of the ECM, part number (P/N) 601–86100–27, is listed in Table 1 of Section 1.A. of the applicable service information listed in figure (1) to the introductory text of paragraph (g) of this AD. A review of maintenance records is also acceptable if the serial number of the ECM can be conclusively determined from that review. 650-32-006, dated October 18, 2021 605-32-009, dated October 18, 2021 604-32-032, dated October 18, 2021 (j) 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, International Validation Branch, mail it to the address identified in paragraph (k)(2) of this AD or email to: 9-avsnyaco-cos@faa.gov. If mailing information, also submit information by email. 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; or Transport Canada; or Bombardier, Inc.’s Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. Frm 00009 (g) Verification of Airplane Technical Records Applicable Bombardier Service Bulletin 1 to the introductory text of paragraph (g) of this AD, unless the ECM has been reidentified with SB–1 on the name plate. PO 00000 Comply with this AD within the compliance times specified, unless already done. Fmt 4702 Sfmt 4702 (k) Additional Information (1) Refer to Transport Canada AD CF– 2023–14R1, dated May 15, 2023, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA–2023–2402. (2) For more information about this AD, contact Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (516) 228– 7300; email: 9-avs-nyaco-cos@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Bombardier Service Bulletin 604–32– 032, dated October 18, 2021. (ii) Bombardier Service Bulletin 605–32– 009, dated October 18, 2021. (iii) Bombardier Service Bulletin 650–32– 006, dated October 18, 2021. (3) For service information identified in this AD, contact Bombardier Business Aircraft Customer Response Center, 400 CoˆteVertu Road West, Dorval, Que´bec H4S 1Y9, Canada; telephone 514–855–2999; email ac.yul@aero.bombardier.com; website bombardier.com. (4) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the E:\FR\FM\28DEP1.SGM 28DEP1 EP28DE23.023</GPH> The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: 89635 89636 Federal Register / Vol. 88, No. 248 / Thursday, December 28, 2023 / Proposed Rules 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 December 21, 2023. Caitlin Locke, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023–28590 Filed 12–27–23; 8:45 am] BILLING CODE 4910–13–P CC:PA:01:PR (REG–121010–17), Room 5203, Internal Revenue Service, P.O. Box 7604, Ben Franklin Station, Washington, DC 20044. FOR FURTHER INFORMATION CONTACT: Concerning the proposed regulations, Stephanie D. Floyd at (202) 317–7053; concerning submissions of comments and requesting a hearing, Vivian Hayes at (202) 317–6901 (not toll-free numbers) or by email to publichearings@irs.gov (preferred). SUPPLEMENTARY INFORMATION: Background DEPARTMENT OF THE TREASURY Internal Revenue Service 26 CFR Part 1 [REG–121010–17] RIN 1545–BO11 Bad Debt Deductions for Regulated Financial Companies and Members of Regulated Financial Groups Internal Revenue Service (IRS), Treasury. ACTION: Notice of proposed rulemaking. AGENCY: This document contains proposed regulations that would provide guidance regarding whether a debt instrument is worthless for Federal income tax purposes. The proposed regulations are necessary to update the standard for determining when a debt instrument held by a regulated financial company or a member of a regulated financial group will be conclusively presumed to be worthless. The proposed regulations will affect regulated financial companies and members of regulated financial groups that hold debt instruments. DATES: Written or electronic comments and requests for a public hearing must be received by February 26, 2024. ADDRESSES: Commenters are strongly encouraged to submit public comments electronically via the Federal eRulemaking Portal at https:// www.regulations.gov (indicate IRS and REG–121010–17) by following the online instructions for submitting comments. Requests for a public hearing must be submitted as prescribed in the ‘‘Comments and Requests for a Public Hearing’’ section. Once submitted to the Federal eRulemaking Portal, comments cannot be edited or withdrawn. The Department of the Treasury (Treasury Department) and the IRS will publish for public availability any comments submitted to the IRS’s public docket. Send paper submissions to: khammond on DSKJM1Z7X2PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 19:37 Dec 27, 2023 Jkt 262001 This document contains proposed amendments to the Income Tax Regulations (26 CFR part 1) under section 166 of the Internal Revenue Code (Code). These proposed amendments (proposed regulations) would update the standard in the current regulations under § 1.166–2 (existing regulations) for determining when a debt instrument held by a regulated financial company or a member of a regulated financial group will be conclusively presumed to be worthless. 1. Existing Rules Section 166(a)(1) provides that a deduction is allowed for any debt that becomes worthless within the taxable year. Section 166(a)(2) permits the Secretary of the Treasury or her delegate (Secretary) to allow a taxpayer to deduct a portion of a partially worthless debt that does not exceed the amount charged-off within the taxable year. The existing regulations do not define ‘‘worthless.’’ In determining whether a debt is worthless in whole or in part, the IRS considers all pertinent evidence, including the value of any collateral securing the debt and the financial condition of the debtor. See § 1.166– 2(a). The existing regulations provide further that, when the surrounding circumstances indicate that a debt is worthless and uncollectible and that legal action to enforce payment would in all probability not result in the satisfaction of execution on a judgment, legal action is not required in order to determine that the debt is worthless. See § 1.166–2(b). The existing regulations provide two alternative conclusive presumptions of worthlessness for bad debt. First, § 1.166–2(d)(1) generally provides that if a bank or other corporation subject to supervision by Federal authorities, or by State authorities maintaining substantially equivalent standards, charges off a debt in whole or in part, either (1) in obedience to the specific orders of such authorities, or (2) in PO 00000 Frm 00010 Fmt 4702 Sfmt 4702 accordance with the established policies of such authorities, and such authorities at the first audit subsequent to the charge-off confirm in writing that the charge-off would have been subject to specific orders, then the debt is conclusively presumed to have become worthless, in whole or in part, to the extent charged off during the taxable year. Second, § 1.166–2(d)(3) generally provides that a bank (but not other corporations) subject to supervision by Federal authorities, or by State authorities maintaining substantially equivalent standards, may elect to use a method of accounting that establishes a conclusive presumption of worthlessness for debts, provided the bank’s supervisory authority has made an express determination that the bank maintains and applies loan loss classification standards that are consistent with the regulatory standards of that supervisory authority. Section 1.166–2(d)(1) and (3) are collectively referred to as the ‘‘Conclusive Presumption Regulations.’’ 2. Generally Accepted Accounting Principles Prior to the Current Expected Credit Loss Revisions For financial reporting purposes, financial institutions in the United States follow the U.S. Generally Accepted Accounting Principles (GAAP) issued by the Financial Accounting Standards Board (FASB). The long-standing GAAP model for recognizing credit losses is referred to as the ‘‘incurred loss model’’ because it delays recognition of credit losses until it is probable that a loss has been incurred. Under the incurred loss model, an entity considers only past events and current conditions in measuring the incurred credit loss. This method does not require or allow the incorporation of economic forecasts, or consideration of industry cycles. The incurred loss model permits institutions to use various methods to estimate credit losses, including historical loss methods, roll-rate methods, and discounted cash flow methods. The GAAP accounting for credit losses has been revised with the introduction of the current expected credit loss methodology for estimating allowance for credit losses, as further described in section 3 of this Background. Under the GAAP incurred loss model, an institution must first assess whether a decline in fair value of a debt security below the amortized cost of the security is a temporary impairment or other than temporary impairment (OTTI). If an entity intends to sell the security or more likely than not will be required to E:\FR\FM\28DEP1.SGM 28DEP1

Agencies

[Federal Register Volume 88, Number 248 (Thursday, December 28, 2023)]
[Proposed Rules]
[Pages 89633-89636]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-28590]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2023-2402; Project Identifier MCAI-2023-00370-T]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 
604 Variants) airplanes. This proposed AD was prompted by a report 
indicating that a new filter plate connector for the nose wheel 
steering (NWS) system electronic control module (ECM) does not meet 
certain certification requirements. This proposed AD would require 
replacing all affected non-compliant ECMs. This proposed AD would also 
prohibit the installation of affected parts under certain conditions. 
The FAA is proposing this AD to address the unsafe condition on these 
products.

DATES: The FAA must receive comments on this proposed AD by February 
12, 2024.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to regulations.gov. Follow 
the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2023-2402; or in person at Docket Operations between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD 
docket contains this NPRM, the mandatory continuing airworthiness 
information (MCAI), any comments received, and other information. The 
street address for Docket Operations is listed above.

Material Incorporated by Reference

     For service information identified in this NPRM, contact 
Bombardier Business Aircraft Customer Response Center, 400 C[ocirc]te-
Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; telephone 514-
855-2999; email bombardier.com">ac.yul@aero.bombardier.com; website bombardier.com.
     You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 2200 South 
216th St., Des Moines, WA. For information on the availability of this 
material at the FAA, call 206-231-3195.

FOR FURTHER INFORMATION CONTACT: Steven Dzierzynski, Aviation Safety 
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
phone: (516) 228-7300; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    The FAA invites you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under ADDRESSES. Include ``Docket No. FAA-2023-2402; Project Identifier 
MCAI-2023-00370-T'' at the beginning of your comments. The most helpful 
comments reference a specific portion of the proposal, explain the 
reason for any recommended change, and include supporting data. The FAA 
will consider all comments received by the closing date and may amend 
the proposal because of those comments.
    Except for Confidential Business Information (CBI) as described in 
the following paragraph, and other information as described in 14 CFR 
11.35, the FAA will post all comments received, without change, to 
regulations.gov, including any personal information you provide. The 
agency will also post a report summarizing each

[[Page 89634]]

substantive verbal contact received about this NPRM.

Confidential Business Information

    CBI is commercial or financial information that is both customarily 
and actually treated as private by its owner. Under the Freedom of 
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public 
disclosure. If your comments responsive to this NPRM contain commercial 
or financial information that is customarily treated as private, that 
you actually treat as private, and that is relevant or responsive to 
this NPRM, it is important that you clearly designate the submitted 
comments as CBI. Please mark each page of your submission containing 
CBI as ``PROPIN.'' The FAA will treat such marked submissions as 
confidential under the FOIA, and they will not be placed in the public 
docket of this NPRM. Submissions containing CBI should be sent to 
Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, 
Suite 410, Westbury, NY 11590; phone: (516) 228-7300; email: [email protected]. Any commentary that the FAA receives which is not 
specifically designated as CBI will be placed in the public docket for 
this rulemaking.

Background

    Transport Canada, which is the aviation authority for Canada, has 
issued Transport Canada AD CF-2023-14R1, dated May 15, 2023 (Transport 
Canada AD CF-2023-14R1) (also referred to after this as the MCAI), to 
correct an unsafe condition on certain Bombardier, Inc., Model CL-600-
2B16 (601-3A, 601-3R, and 604 Variants) airplanes. The MCAI states that 
the manufacturer of the NWS system ECM, part number (P/N) 601-86100-27, 
introduced a new filter plate connector that does not meet the 
certification requirements related to the susceptibility of electronic 
components to high intensity radiated field. This non-compliant filter 
plate connector, if not replaced, could result in a malfunction of the 
NWS system causing potential un-commanded steering or lateral excursion 
from the runway.
    The FAA is proposing 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-2023-2402.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed the following Bombardier service information.
     Service Bulletin 604-32-032, dated October 18, 2021.
     Service Bulletin 605-32-009, dated October 18, 2021.
     Service Bulletin 650-32-006, dated October 18, 2021.
    This service information specifies procedures for removing and 
replacing all affected non-compliant ECMs, P/N 601-86100-27. These 
documents are distinct since they apply to different airplane 
configurations.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

FAA's Determination

    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 
and service information referenced above. The FAA is issuing this NPRM 
after determining that the unsafe condition described previously is 
likely to exist or develop on other products of the same type design.

Proposed AD Requirements in This NPRM

    This proposed AD would require accomplishing the actions specified 
in the service information already described. This proposed AD would 
also prohibit the installation of affected parts under certain 
conditions.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect 164 airplanes of U.S. registry. The FAA estimates the following 
costs to comply with this proposed 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..............................         $75,972         $76,482     $12,543,048
----------------------------------------------------------------------------------------------------------------

    The FAA has included all known costs in its cost estimate. 
According to the manufacturer, however, some or all of the costs of 
this proposed AD may be covered under warranty, thereby reducing the 
cost impact on affected operators.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: General requirements. 
Under that section, Congress charges the FAA with promoting safe flight 
of civil aircraft in air commerce by prescribing regulations for 
practices, methods, and procedures the Administrator finds necessary 
for safety in air commerce. This regulation is within the scope of that 
authority because it addresses an unsafe condition that is likely to 
exist or develop on products identified in this rulemaking action.

Regulatory Findings

    The FAA determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Would not affect intrastate aviation in Alaska, and
    (3) Would not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

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

[[Page 89635]]

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

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

Bombardier, Inc.: Docket No. FAA-2023-2402; Project Identifier MCAI-
2023-00370-T.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by February 12, 2024.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., Model CL-600-2B16 (601-3A, 
601-3R, and 604 Variants) airplanes, certificated in any category, 
with serial numbers 5301 through 5665 inclusive, 5701 through 5990 
inclusive, and 6050 and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing 
gear.

(e) Unsafe Condition

    This AD was prompted by a report indicating that a new filter 
plate connector for the nose wheel steering (NWS) system electronic 
control module (ECM) does not meet certain certification 
requirements. The FAA is issuing this AD to address this non-
compliant filter plate connector, which, if not replaced, could 
result in a malfunction of the NWS system causing potential 
uncommanded steering or lateral excursion from the runway.

(f) Compliance

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

(g) Verification of Airplane Technical Records

    Within 24 months after the effective date of this AD: Inspect 
the serial number of the ECM, P/N 601-86100-27, in accordance with 
Section 2.B. Part A of the Accomplishment Instructions of the 
applicable service information listed in figure (1) to the 
introductory text of paragraph (g) of this AD to determine if the 
serial number of the ECM, part number (P/N) 601-86100-27, is listed 
in Table 1 of Section 1.A. of the applicable service information 
listed in figure (1) to the introductory text of paragraph (g) of 
this AD. A review of maintenance records is also acceptable if the 
serial number of the ECM can be conclusively determined from that 
review.
[GRAPHIC] [TIFF OMITTED] TP28DE23.023

    (1) If the serial number of the ECM is listed in Table 1 of 
Section 1.A. of the applicable service information or is not 
reidentified on the nameplate as SB-1, then the actions of paragraph 
(h) of this AD are required.
    (2) If the serial number of the ECM is not listed in Table 1 of 
Section 1.A. of the applicable service information or is 
reidentified on the nameplate as SB-1, then the actions of paragraph 
(h) of this AD are not required.

(h) Replacement

    For airplanes identified in paragraph (g)(1) of this AD: Do the 
actions specified in paragraphs (h)(1) and (2) of this AD.
    (1) Within 24 months after the effective date of this AD: 
Replace the ECM, P/N 601-86100-27, identified in paragraph (g)(1) of 
this AD, in accordance with Section 2.C. Part B of the 
Accomplishment Instructions of the applicable service information 
listed in figure 1 to the introductory text of paragraph (g) of this 
AD.
    (2) Prior to return to service, complete the operational test of 
the NWS system in accordance with Section 2.D. of the Accomplishment 
Instructions of the applicable service information listed in figure 
1 to the introductory text of paragraph (g) of this AD.

(i) Parts Installation Limitation

    As of the effective date of this AD, it is prohibited to install 
ECM, P/N 601-86100-27, as a replacement part, if the serial number 
is listed in Table 1 of Section 1.A. of the applicable service 
information listed in figure 1 to the introductory text of paragraph 
(g) of this AD, unless the ECM has been reidentified with SB-1 on 
the name plate.

(j) 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, 
International Validation Branch, mail it to the address identified 
in paragraph (k)(2) of this AD or email to: [email protected]. 
If mailing information, also submit information by email. 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; or Transport Canada; or Bombardier, Inc.'s 
Transport Canada Design Approval Organization (DAO). If approved by 
the DAO, the approval must include the DAO-authorized signature.

(k) Additional Information

    (1) Refer to Transport Canada AD CF-2023-14R1, dated May 15, 
2023, for related information. This Transport Canada AD may be found 
in the AD docket at regulations.gov under Docket No. FAA-2023-2402.
    (2) For more information about this AD, contact Steven 
Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, 
Suite 410, Westbury, NY 11590; phone: (516) 228-7300; email: [email protected].

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless this AD specifies otherwise.
    (i) Bombardier Service Bulletin 604-32-032, dated October 18, 
2021.
    (ii) Bombardier Service Bulletin 605-32-009, dated October 18, 
2021.
    (iii) Bombardier Service Bulletin 650-32-006, dated October 18, 
2021.
    (3) For service information identified in this AD, contact 
Bombardier Business Aircraft Customer Response Center, 400 
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; 
telephone 514-855-2999; email bombardier.com">ac.yul@aero.bombardier.com; website 
bombardier.com.
    (4) You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 2200 
South 216th St., Des Moines, WA. For information on the

[[Page 89636]]

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 December 21, 2023.
Caitlin Locke,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2023-28590 Filed 12-27-23; 8:45 am]
BILLING CODE 4910-13-P
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