Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes, 10752-10754 [2022-03939]

Download as PDF 10752 Federal Register / Vol. 87, No. 38 / Friday, February 25, 2022 / Proposed Rules Ms. Amelia Whiting, U.S. Department of Energy, Office of the General Counsel, GC–33, 1000 Independence Avenue SW, Washington, DC, 20585–0121. Telephone: (202) 586–2588; Email: amelia.whiting@hq.doe.gov. For further information on how to submit a comment or review other public comments and the docket contact the Appliance and Equipment Standards Program staff at (202) 287– 1445 or by email: ApplianceStandardsQuestions@ ee.doe.gov. On January 24, 2022, DOE published a RFI undertaking a review to determine whether amendments are warranted for the test procedure for dedicated-purpose pool pumps. 87 FR 3457. DOE identified certain issues associated with the currently applicable test procedure on which DOE is interested in receiving comment. 87 FR 3457, 3459–3461. On this date, DOE also published a RFI initiating an effort to determine whether to amend the current energy conservation standards for dedicatedpurpose pool pumps. 87 FR 3461 (January 24, 2022) The RFI solicits information from the public to help DOE determine whether amended standards for dedicated-purpose pool pumps would result in significant energy savings and whether such standards would be technologically feasible and economically justified. 87 FR 3461. Both RFIs had a comment period deadline that closed on February 23, 2022. Interested parties in the matter, the Pool and Hot Tub Alliance (‘‘PHTA’’) requested an extension of the public comment period for 30 additional days to give time to properly respond to the technical nature of the questions posed in both RFIs. PHTA explained that without the extension, the industry will be unable to provide all the data and information being requested within the current comment period. (PHTA, EERE– 2022–BT–TP–0003, No. 3 at p. 1; PHTA, EERE–2022–BT–STD–0001, No. 3 at p. 1) 1 Also, the Pacific Gas and Electric Company, San Diego Gas and Electric, and Southern California Edison (‘‘Joint Requesters’’) requested an extension of the public comment period for both lotter on DSK11XQN23PROD with PROPOSALS1 SUPPLEMENTARY INFORMATION: 1 The parenthetical reference provides a reference for information located in DOE’s rulemaking dockets. (Docket No. EERE–2022–BT–TP–0003 which is maintained at www.regulations.gov/ #!docketDetail;D=EERE-2022-BT-TP-0003 and Docket No. EERE–2022–BT–STD–0001 which is maintained at www.regulations.gov/ #!docketDetail;D=EERE-2022-BT-STD-0001). The references are arranged as follows: (Commenter name, comment docket ID number, page of that document). VerDate Sep<11>2014 16:13 Feb 24, 2022 Jkt 256001 RFIs for 30 additional days. The joint requestors commented that the extension is necessary due to the extent of research and outreach needed to adequately respond to the RFIs and that they support PHTA in the request for an additional 30-day extension. (Joint Requesters, EERE–2022–BT–TP–0003, No. 2 at p. 1, Joint Requesters, EERE– 2022–BT–STD–0001, No. 2 at p.1) DOE has reviewed the requests and is reopening the comment period to allow additional time for interested parties to submit comments. In light of the submitted requests, DOE believes that additional time is warranted, and that reopening the comment period until March 9, 2022 is sufficient. Therefore, DOE is reopening the comment period for both RFIs until March 9, 2022. Signing Authority This document of the Department of Energy was signed on February 17, 2022, by Kelly J. Speakes-Backman, Principal Deputy Assistant Secretary for Energy Efficiency and Renewable Energy, pursuant to delegated authority from the Secretary of Energy. That document with the original signature and date is maintained by DOE. For administrative purposes only, and in compliance with requirements of the Office of the Federal Register, the undersigned DOE Federal Register Liaison Officer has been authorized to sign and submit the document in electronic format for publication, as an official document of the Department of Energy. This administrative process in no way alters the legal effect of this document upon publication in the Federal Register. Signed in Washington, DC, on February 22, 2022. Treena V. Garrett, Federal Register Liaison Officer, U.S. Department of Energy. [FR Doc. 2022–04050 Filed 2–24–22; 8:45 am] BILLING CODE 6450–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2022–0141; Project Identifier MCAI–2021–01052–T] RIN 2120–AA64 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes Federal Aviation Administration (FAA), DOT. AGENCY: PO 00000 Frm 00034 Fmt 4702 Sfmt 4702 Notice of proposed rulemaking (NPRM). ACTION: The FAA proposes to adopt a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL–600– 2B19 (Regional Jet Series 100 & 440) airplanes. This proposed AD was prompted by a report of an oxygen-fed ground fire event potentially caused by electrical arcing from a faulty surround light wire on the third crew member’s (observer) oxygen mask. This proposed AD would require an inspection for discrepancies of the observer’s oxygen mask stowage box and storage compartment, oxygen hose connections and routing, and the associated electrical harness, and corrective actions if necessary; and modifying the oxygen mask flexible lamp harness, mounting plate, and compartment panel, including rerouting the electrical harness and applying protective sealant. 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 April 11, 2022. 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 https://www.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. For service information identified in this NPRM, contact MHI RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Que´bec J7N 1E1 Canada; Widebody Customer Response Center North America toll-free telephone +1–844– 272–2720 or direct-dial telephone +1– 514–855–8500; fax +1–514–855–8501; email thd.crj@mhirj.com; internet https://mhirj.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. DATES: Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2022–0141; or in person at Docket E:\FR\FM\25FEP1.SGM 25FEP1 Federal Register / Vol. 87, No. 38 / Friday, February 25, 2022 / Proposed Rules Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this NPRM, any comments received, and other information. The street address for Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT: Gabriel Kim, Aerospace Engineer, Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516– 228–7300; fax 516–794–5531; email 9avs-nyaco-cos@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–2022–0141; Project Identifier MCAI–2021–01052–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 https:// www.regulations.gov, including any personal information you provide. The agency will also post a report summarizing each 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 Gabriel Kim, Aerospace Engineer, Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; fax 516–794–5531; 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 Civil Aviation (TCCA), which is the aviation authority for Canada, has issued TCCA AD CF– 2021–32, dated September 17, 2021 (also referred to after this as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for all MHI RJ Aviation ULC Model CL–600–2B19 (Regional Jet Series 100 & 440) airplanes. You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2022–0141. This proposed AD was prompted by a report of an oxygen-fed ground fire event potentially caused by electrical arcing from a faulty surround light wire on the third crew member’s (observer) oxygen mask. An investigation determined that the oxygen supply hose connecting to the rear of the observer oxygen mask box assembly could be subject to chafing damage. The FAA is proposing this AD to address possible damage to the observer oxygen mask supply hoses and a potential for an oxygen-fed fire in the vicinity of the observer oxygen mask storage compartment. See the MCAI for additional background information. Related Service Information Under 1 CFR Part 51 MHI RJ has issued Service Bulletin 601R–35–022, Revision A, dated 10753 October 12, 2021. This service information describes procedures for doing an general visual inspection for discrepancies (including elbow fitting clocking (rotation), sealing tape installed in a certain location, wire damage (e.g., cuts, nicks, kinks, insulation damage)) of the observer’s oxygen mask stowage box and storage compartment, the observer’s mask oxygen hose connections, the hose routing, and the associated electrical harness, and applicable corrective actions; and modifying the oxygen mask flexible lamp harness, mounting plate, and compartment panel, including rerouting the electrical harness and applying protective sealant. Corrective actions include re-positioning the elbow fitting, removing sealing tape, and repairing wiring. 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 the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI and service information referenced above. The FAA is proposing this AD because the FAA evaluated all the relevant information and determined 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. Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 407 airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: lotter on DSK11XQN23PROD with PROPOSALS1 ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 9 Work-hours × $85 per hour = up to $765 ................................................................................ $115 $880 $358,160 VerDate Sep<11>2014 16:13 Feb 24, 2022 Jkt 256001 PO 00000 Frm 00035 Fmt 4702 Sfmt 4702 E:\FR\FM\25FEP1.SGM 25FEP1 10754 Federal Register / Vol. 87, No. 38 / Friday, February 25, 2022 / Proposed Rules § 39.13 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) 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. lotter on DSK11XQN23PROD with PROPOSALS1 The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. VerDate Sep<11>2014 16:13 Feb 24, 2022 Jkt 256001 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.): Docket No. FAA–2022–0141; Project Identifier MCAI–2021–01052–T. (a) Comments Due Date The FAA must receive comments on this airworthiness directive (AD) by April 11, 2022. (b) Affected ADs None. (c) Applicability This AD applies to all MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Model CL–600–2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Unsafe Condition This AD was prompted by a report of an oxygen-fed ground fire event potentially caused by electrical arcing from a faulty surround light wire on the third crew member’s (observer) oxygen mask. An investigation determined that the oxygen supply hose connecting to the rear of the observer oxygen mask box assembly could be subject to chafing damage. The FAA is issuing this AD to address possible damage to the observer oxygen mask supply hoses and a potential for an oxygen-fed fire in the vicinity of the observer oxygen mask storage compartment. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Within 4,000 flight hours or 24 months, whichever occurs first, after the effective date of this AD, do the actions in paragraphs (g)(1) and (2) of this AD: (1) Do a general visual inspection for discrepancies of the observer’s oxygen mask stowage box and storage compartment, the observer’s mask oxygen hose connections, the hose routing, and the associated electrical harness, in accordance with paragraph 2.B. of the Accomplishment Instructions of MHI RJ Service Bulletin 601R–35–022, Revision A, dated October 12, 2021. If any discrepancies are found, before further flight, do all applicable corrective actions, in accordance with paragraph 2.B. of the Accomplishment Instructions of MHI RJ Service Bulletin 601R–35–022, Revision A, dated October 12, 2021. (2) Modify the oxygen mask flexible lamp harness, mounting plate, and compartment panel, including rerouting the electrical harness and applying protective sealant, in accordance with paragraph 2.B. of the Accomplishment Instructions of MHI RJ Service Bulletin 601R–35–022, Revision A, dated October 12, 2021. PO 00000 Frm 00036 Fmt 4702 Sfmt 9990 (h) Credit for Previous Actions This paragraph provides credit for actions required by paragraph (g) of this AD, if those actions were performed before the effective date of this AD using MHI RJ Service Bulletin 601R–35–022, dated June 1, 2021. (i) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; fax 516–794–5531. 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, New York ACO Branch, FAA; or Transport Canada Civil Aviation (TCCA); or MHI RJ Aviation ULC’s TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (j) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) TCCA AD CF–2021–32, dated September 17, 2021, for related information. This MCAI may be found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2022–0141. (2) For more information about this AD, contact Gabriel Kim, Aerospace Engineer, Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; fax 516–794–5531; email 9-avs-nyaco-cos@faa.gov. (3) For service information identified in this AD, contact MHI RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Que´bec J7N 1E1 Canada; Widebody Customer Response Center North America toll-free telephone +1– 844–272–2720 or direct-dial telephone +1– 514–855–8500; fax +1–514–855–8501; email thd.crj@mhirj.com; internet https:// mhirj.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. Issued on February 11, 2022. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2022–03939 Filed 2–24–22; 8:45 am] BILLING CODE 4910–13–P E:\FR\FM\25FEP1.SGM 25FEP1

Agencies

[Federal Register Volume 87, Number 38 (Friday, February 25, 2022)]
[Proposed Rules]
[Pages 10752-10754]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-03939]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0141; Project Identifier MCAI-2021-01052-T]
RIN 2120-AA64


Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate 
Previously Held by 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 all MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 
& 440) airplanes. This proposed AD was prompted by a report of an 
oxygen-fed ground fire event potentially caused by electrical arcing 
from a faulty surround light wire on the third crew member's (observer) 
oxygen mask. This proposed AD would require an inspection for 
discrepancies of the observer's oxygen mask stowage box and storage 
compartment, oxygen hose connections and routing, and the associated 
electrical harness, and corrective actions if necessary; and modifying 
the oxygen mask flexible lamp harness, mounting plate, and compartment 
panel, including rerouting the electrical harness and applying 
protective sealant. 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 April 11, 
2022.

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 https://www.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.
    For service information identified in this NPRM, contact MHI RJ 
Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Qu[eacute]bec J7N 1E1 
Canada; Widebody Customer Response Center North America toll-free 
telephone +1-844-272-2720 or direct-dial telephone +1-514-855-8500; fax 
+1-514-855-8501; email [email protected]; internet https://mhirj.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.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2022-0141; or in person at 
Docket

[[Page 10753]]

Operations between 9 a.m. and 5 p.m., Monday through Friday, except 
Federal holidays. The AD docket contains this NPRM, any comments 
received, and other information. The street address for Docket 
Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Gabriel Kim, Aerospace Engineer, 
Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600 
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; 
fax 516-794-5531; 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-2022-0141; Project Identifier 
MCAI-2021-01052-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 
https://www.regulations.gov, including any personal information you 
provide. The agency will also post a report summarizing each 
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 
Gabriel Kim, Aerospace Engineer, Avionics and Electrical Systems 
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531; 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 Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued TCCA AD CF-2021-32, dated September 
17, 2021 (also referred to after this as the Mandatory Continuing 
Airworthiness Information, or the MCAI), to correct an unsafe condition 
for all MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 
& 440) airplanes. You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2022-
0141.
    This proposed AD was prompted by a report of an oxygen-fed ground 
fire event potentially caused by electrical arcing from a faulty 
surround light wire on the third crew member's (observer) oxygen mask. 
An investigation determined that the oxygen supply hose connecting to 
the rear of the observer oxygen mask box assembly could be subject to 
chafing damage. The FAA is proposing this AD to address possible damage 
to the observer oxygen mask supply hoses and a potential for an oxygen-
fed fire in the vicinity of the observer oxygen mask storage 
compartment. See the MCAI for additional background information.

Related Service Information Under 1 CFR Part 51

    MHI RJ has issued Service Bulletin 601R-35-022, Revision A, dated 
October 12, 2021. This service information describes procedures for 
doing an general visual inspection for discrepancies (including elbow 
fitting clocking (rotation), sealing tape installed in a certain 
location, wire damage (e.g., cuts, nicks, kinks, insulation damage)) of 
the observer's oxygen mask stowage box and storage compartment, the 
observer's mask oxygen hose connections, the hose routing, and the 
associated electrical harness, and applicable corrective actions; and 
modifying the oxygen mask flexible lamp harness, mounting plate, and 
compartment panel, including rerouting the electrical harness and 
applying protective sealant. Corrective actions include re-positioning 
the elbow fitting, removing sealing tape, and repairing wiring. 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 the State of Design Authority, 
the FAA has been notified of the unsafe condition described in the MCAI 
and service information referenced above. The FAA is proposing this AD 
because the FAA evaluated all the relevant information and determined 
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.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect 407 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
----------------------------------------------------------------------------------------------------------------
9 Work-hours x $85 per hour = up to $765.....................            $115             $880         $358,160
----------------------------------------------------------------------------------------------------------------


[[Page 10754]]

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) 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 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:

MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, 
Inc.): Docket No. FAA-2022-0141; Project Identifier MCAI-2021-01052-
T.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by April 11, 2022.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all MHI RJ Aviation ULC (Type Certificate 
Previously Held by Bombardier, Inc.) Model CL-600-2B19 (Regional Jet 
Series 100 & 440) airplanes, certificated in any category.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by a report of an oxygen-fed ground fire 
event potentially caused by electrical arcing from a faulty surround 
light wire on the third crew member's (observer) oxygen mask. An 
investigation determined that the oxygen supply hose connecting to 
the rear of the observer oxygen mask box assembly could be subject 
to chafing damage. The FAA is issuing this AD to address possible 
damage to the observer oxygen mask supply hoses and a potential for 
an oxygen-fed fire in the vicinity of the observer oxygen mask 
storage compartment.

(f) Compliance

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

(g) Required Actions

    Within 4,000 flight hours or 24 months, whichever occurs first, 
after the effective date of this AD, do the actions in paragraphs 
(g)(1) and (2) of this AD:
    (1) Do a general visual inspection for discrepancies of the 
observer's oxygen mask stowage box and storage compartment, the 
observer's mask oxygen hose connections, the hose routing, and the 
associated electrical harness, in accordance with paragraph 2.B. of 
the Accomplishment Instructions of MHI RJ Service Bulletin 601R-35-
022, Revision A, dated October 12, 2021. If any discrepancies are 
found, before further flight, do all applicable corrective actions, 
in accordance with paragraph 2.B. of the Accomplishment Instructions 
of MHI RJ Service Bulletin 601R-35-022, Revision A, dated October 
12, 2021.
    (2) Modify the oxygen mask flexible lamp harness, mounting 
plate, and compartment panel, including rerouting the electrical 
harness and applying protective sealant, in accordance with 
paragraph 2.B. of the Accomplishment Instructions of MHI RJ Service 
Bulletin 601R-35-022, Revision A, dated October 12, 2021.

(h) Credit for Previous Actions

    This paragraph provides credit for actions required by paragraph 
(g) of this AD, if those actions were performed before the effective 
date of this AD using MHI RJ Service Bulletin 601R-35-022, dated 
June 1, 2021.

(i) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York ACO Branch, FAA, has the authority to approve AMOCs for this 
AD, if requested using the procedures found in 14 CFR 39.19. In 
accordance with 14 CFR 39.19, send your request to your principal 
inspector or responsible Flight Standards Office, as appropriate. If 
sending information directly to the manager of the certification 
office, send it to ATTN: Program Manager, Continuing Operational 
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. 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, New York ACO 
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or MHI RJ 
Aviation ULC's TCCA Design Approval Organization (DAO). If approved 
by the DAO, the approval must include the DAO-authorized signature.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) TCCA AD CF-2021-32, dated September 17, 2021, for related 
information. This MCAI may be found in the AD docket on the internet 
at https://www.regulations.gov by searching for and locating Docket 
No. FAA-2022-0141.
    (2) For more information about this AD, contact Gabriel Kim, 
Aerospace Engineer, Avionics and Electrical Systems Section, FAA, 
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7300; fax 516-794-5531; email [email protected].
    (3) For service information identified in this AD, contact MHI 
RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Qu[eacute]bec J7N 
1E1 Canada; Widebody Customer Response Center North America toll-
free telephone +1-844-272-2720 or direct-dial telephone +1-514-855-
8500; fax +1-514-855-8501; email [email protected]; internet https://mhirj.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.

    Issued on February 11, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2022-03939 Filed 2-24-22; 8:45 am]
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