Airworthiness Directives; Bombardier, Inc. Airplanes, 51029-51033 [2021-19703]

Download as PDF Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules (h) No Reporting Requirements The reporting requirements in the Accomplishment/Instructions, paragraph 2.2., of the MSB, are not required by this AD. Issued on September 7, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (i) Installation Prohibition After the effective date of this AD, do not install onto any engine an oil pump, P/N E4A–50–000–BHY, with an S/N listed in paragraph 1.2., Engines Affected, of the MSB. [FR Doc. 2021–19628 Filed 9–13–21; 8:45 am] (j) Definitions For the purpose of this AD: (1) Group 1 engines are E4 model diesel piston engines in configuration ‘‘-A’’ that are installed on single-engine airplanes. (2) Group 2 engines are E4 model diesel piston engines in configuration ‘‘-B’’ or ‘‘-C’’ and E4P model diesel piston engines that are installed on twin-engine airplanes. (3) A ‘‘part eligible for installation’’ is an oil pump with a P/N and S/N that is not listed in paragraph 1.2., Engines Affected, of the MSB. Federal Aviation Administration (k) Credit for Previous Actions You may take credit for replacing the oil pump, oil filter, and engine oil required by paragraph (g) of this AD if you performed these replacements before the effective date of this AD using the Accomplishment/ Instructions, paragraph 2.2., of Austro Engine GmbH MSB No. MSB–E4–030, Original Issue, dated February 18, 2021; Revision No. 1, dated February 23, 2021; Revision No. 2, dated March 3, 2021; or Revision No. 3, dated March 18, 2021. tkelley on DSK125TN23PROD with PROPOSALS (l) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO 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 local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (m)(1) of this AD. Information may be emailed to: ANE-ADAMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (m) Related Information (1) For more information about this AD, contact Wego Wang, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7134; fax: (781) 238–7199; email: wego.wang@faa.gov. (2) For service information identified in this AD, contact Austro Engine GmbH, Rudolf-Diesel-Strasse 11, 2700 Weiner Neustadt, Austria; phone: +43 2622 23000; website: www.austroengine.at. You may view this referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (781) 238–7759. VerDate Sep<11>2014 21:00 Sep 13, 2021 Jkt 253001 BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION 14 CFR Part 39 [Docket No. FAA–2021–0784; Project Identifier MCAI–2020–01455–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– 600–1A11 (600), CL–600–2A12 (601), and CL–600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by October 29, 2021. SUMMARY: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to 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 Bombardier, Inc., 200 Coˆte Vertu Road West, Dorval, Que´bec H4S 2A3, Canada; North America toll-free telephone 1–866–538– 1247 or direct-dial telephone 1–514– ADDRESSES: PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 51029 855–2999; email ac.yul@ aero.bombardier.com; internet https:// www.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. Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2021– 0784; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this NPRM, any comments received, and other information. The street address for Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT: Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and Administrative Services 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. 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–2021–0784; Project Identifier MCAI–2020–01455–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 proposed AD. Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this NPRM E:\FR\FM\14SEP1.SGM 14SEP1 51030 Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 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 Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and Administrative Services 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.go. 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– 2020–44, dated October 23, 2020 (referred to after this as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for certain Bombardier, Inc., Model CL–600–1A11 (600), CL–600– 2A12 (601), and CL–600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes. You may examine the MCAI in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2021– 0784. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is proposing this AD to address fatigue cracking and loss of structural integrity of the circumferential splice joint, which could result in reduced structural integrity of the airplane. See the MCAI for additional background information. tkelley on DSK125TN23PROD with PROPOSALS Related Service Information Under 1 CFR Part 51 The FAA reviewed the following Bombardier service information, which describes new or more restrictive airworthiness limitations (a special detailed inspection for cracking of the skin circumferential splice at fuselage station (FS) 559.00, between stringer (STR) 10L and STR10R. These documents are distinct since they apply to different airplane configurations. (Note: The asterisk (or ‘‘one star’’) with the last three digits of the task number VerDate Sep<11>2014 21:00 Sep 13, 2021 Jkt 253001 indicates that the task is an airworthiness limitation task.) • Task 53–30–00–165*, ‘‘Special Detailed Inspection of the Skin Circumferential Splice at FS559.00 between STR10L and STR10R,’’ of Bombardier Challenger 605 CL–600– 1A11 Time Limits/Maintenance Checks (TLMC), Product Support Publication (PSP) 605, Temporary Revision (TR) 5– 163, dated April 30, 2020. • Task 53–30–00–188*, ‘‘Special Detailed Inspection of the Skin Circumferential Splice at FS559.00 between STR10L and STR10R,’’ of Bombardier Challenger CL–600–2A12 TLMC, PSP 601–5, TR 5–267, dated April 30, 2020. • Task 53–30–00–191*, ‘‘Special Detailed Inspection of the Skin Circumferential Splice at FS559.00 between STR10L and STR10R,’’ of Bombardier Challenger CL–600–2B16 TLMC, PSP 601A–5, TR 5–281, dated April 30, 2020. • Task 53–20–00–192*, ‘‘Special Detailed Inspection of the Skin Circumferential Splice at FS559.00 between STR10L and STR10R,’’ of Bombardier Challenger CL–600–2B16, CH 604, TLMC, Revision 32, dated December 18, 2019. • Task 53–20–00–192*, ‘‘Special Detailed Inspection of the Skin Circumferential Splice at FS559.00 between STR10L and STR10R,’’ of Bombardier Challenger CL–600–2B16, CH 605, TLMC, Revision 21, dated December 18, 2019. • Task 53–20–00–192*, ‘‘Special Detailed Inspection of the Skin Circumferential Splice at FS559.00 between STR10L and STR10R,’’ of Bombardier Challenger CL–600–2B16, CH 650, TLMC, Revision 8, dated December 18, 2019. 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. PO 00000 Frm 00009 Fmt 4702 Sfmt 4702 Proposed Requirements of This NPRM This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. This proposed AD would require revisions to certain operator maintenance documents to include new actions (e.g., inspections). Compliance with these actions is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by this proposed AD, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (i)(1) of this proposed AD. Costs of Compliance The FAA estimates that this proposed AD affects 463 airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: The FAA has determined that revising the maintenance or inspection program takes an average of 90 work-hours per operator, although the agency recognizes that this number may vary from operator to operator. Since operators incorporate maintenance or inspection program changes for their affected fleet(s), the FAA has determined that a per-operator estimate is more accurate than a per-airplane estimate. Therefore, the agency estimates the average total cost per operator to be $7,650 (90 work-hours × $85 per work-hour). 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. E:\FR\FM\14SEP1.SGM 14SEP1 Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 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. tkelley on DSK125TN23PROD with PROPOSALS The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: VerDate Sep<11>2014 21:00 Sep 13, 2021 Jkt 253001 51031 5665 inclusive, 5701 through 6049 inclusive, and 6050 through 6999 inclusive. PART 39—AIRWORTHINESS DIRECTIVES (d) Subject 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 (e) Reason [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ Bombardier, Inc.: Docket No. FAA–2021– 0784; Project Identifier MCAI–2020– 01455–T. (a) Comments Due Date The FAA must receive comments on this airworthiness directive by October 29, 2021. (b) Affected ADs None. Frm 00010 Fmt 4702 This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address fatigue cracking and loss of structural integrity of the circumferential splice joint, which could result in reduced structural integrity of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Maintenance or Inspection Program Revision (c) Applicability This AD applies to Bombardier, Inc., airplanes, certificated in any category, identified in paragraphs (c)(1) through (3) of this AD. (1) Model CL–600–1A11 (600) airplanes, serial numbers 1004 through 1085 inclusive. (2) Model CL–600–2A12 (601) airplanes, serial numbers 3001 through 3066 inclusive. (3) Model CL–600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes, serial numbers 5001 through 5194 inclusive, 5301 through PO 00000 Air Transport Association (ATA) of America Code 05, Time Limits/Maintenance Checks. Sfmt 4702 Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Figure 1 to paragraph (g) of this AD. The initial compliance time for doing the tasks is at the time specified in the applicable document specified in Figure 1 to paragraph (g) of this AD, or within 60 days after the effective date of this AD, whichever occurs later. BILLING CODE 4910–13–P E:\FR\FM\14SEP1.SGM 14SEP1 51032 Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules Figure 1 to paragraph (g) Time Limits/Maintenance Checks (TIMC) Revisions and Task Numbers For ModelHaving Serial TLMC Task Numbers and numbersTitle 53-30-00-165* Model CL-6001004 through PSP 605 TLMC Temporary lAl 1 (600 1085 inclusive Revision (TR) 5-163, dated Special Detailed variant) April30,2020 Inspection of the Skin airplanes Circumferential Splice at FS559.00 between STRlOL and STRlOR Model CL-6003001 through PSP 601-5 TLMC TR 5-267, 53-30-00-188* 2A12 (601 3066 inclusive dated April 30, 2020 Special Detailed variant) Inspection of the Skin airplanes Circumferential Splice at FS559.00 between STRl0L and STRl0R 53-30-00-191 * Model CL-6005001 through PSP 601A-5 TLMC TR 2B16 (6015194 inclusive 5-281, dated April 30, 2020 Special Detailed 3A/3R variant) Inspection of the Skin airplanes Circumferential Splice at FS559.00 between STRl0L and STRl0R Model CL-6005301 through CH 604 TLMC Revision 32, 53-20-00-192* 2B16 (604 5665 inclusive dated December 18, 2019 Special Detailed variant) Inspection of the Skin airplanes Circumferential Splice at FS559.00 between STRlOL and STRlOR Model CL-6005701 through CH 605 TLMC Revision 21, 53-20-00-192* 2B16 (604 6049 inclusive dated December 18, 2019 Special Detailed variant) Inspection of the Skin airplanes Circumferential Splice at FS559.00 between STRlOL and STRlOR 53-20-00-192* Model CL-6006050 through CH 650 TLMC Revision 8, 2B16 (604 6999 inclusive dated December 18, 2019; Special Detailed variant) Inspection of the Skin airplanes Circumferential Splice at FS559.00 between STRlOL and STRlOR (h) No Alternative Actions or Intervals After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions (e.g., inspections) or intervals, may be used unless the actions and intervals are approved as an alternative VerDate Sep<11>2014 21:00 Sep 13, 2021 Jkt 253001 method of compliance (AMOC) in accordance with the procedures specified in paragraph (i)(1) of this AD. (i) Other FAA AD Provisions The following provisions also apply to this AD: PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 (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 E:\FR\FM\14SEP1.SGM 14SEP1 EP14SE21.003</GPH> tkelley on DSK125TN23PROD with PROPOSALS Note: The asterisk (or "one star") with the last three digits of the task number indicates that the task is an airworthiness limitation task. Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 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 Bombardier, Inc.’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–2020–44, dated October 23, 2020, 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–2021–0784. (2) For more information about this AD, contact Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and Administrative Services 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. (3) For service information identified in this AD, contact Bombardier, Inc., 200 Coˆte Vertu Road West, Dorval, Que´bec H4S 2A3, Canada; North America toll-free telephone 1– 866–538–1247 or direct-dial telephone 1– 514–855–2999; email ac.yul@ aero.bombardier.com; internet https:// www.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. Issued on September 8, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–19703 Filed 9–13–21; 8:45 am] tkelley on DSK125TN23PROD with PROPOSALS BILLING CODE 4910–13–C VerDate Sep<11>2014 21:00 Sep 13, 2021 Jkt 253001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0778; Project Identifier 2019–CE–062–AD] RIN 2120–AA64 Airworthiness Directives; Daher Aerospace (Type Certificate Previously Held by SOCATA) 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 Daher Aerospace (type certificate previously held by SOCATA) Model TBM 700 airplanes. This proposed AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a non-conforming dump switch ejecting from its slot. This proposed AD would require modifying certain dump switches. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by October 29, 2021. SUMMARY: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to 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 Daher Aerospace, 601 NE 10 Street, Pompano Beach, FL 33060; phone: (954) 366–3331; email: TBMCare@daher.com; website: https:// www.daher.com/en/aircraftmanufacturer/customer-service/. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (816) 329–4148. ADDRESSES: PO 00000 Frm 00012 Fmt 4702 Sfmt 4702 51033 Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0778; 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 MCAI, any comments received, and other information. The street address for Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT: Gregory Johnson, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106; phone: (720) 626–5462; fax: (816) 329–4090; email: gregory.johnson@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 the ADDRESSES section. Include ‘‘Docket No. FAA–2021–0778; Project Identifier 2019–CE–062–AD’’ 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 proposed AD. Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this NPRM contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as ‘‘PROPIN.’’ The FAA will treat such E:\FR\FM\14SEP1.SGM 14SEP1

Agencies

[Federal Register Volume 86, Number 175 (Tuesday, September 14, 2021)]
[Proposed Rules]
[Pages 51029-51033]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-19703]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0784; Project Identifier MCAI-2020-01455-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-600-1A11 (600), CL-600-2A12 
(601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. 
This proposed AD was prompted by a determination that new or more 
restrictive airworthiness limitations are necessary. This proposed AD 
would require revising the existing maintenance or inspection program, 
as applicable, to incorporate new or more restrictive airworthiness 
limitations. The FAA is proposing this AD to address the unsafe 
condition on these products.

DATES: The FAA must receive comments on this proposed AD by October 29, 
2021.

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 
Bombardier, Inc., 200 C[ocirc]te Vertu Road West, Dorval, Qu[eacute]bec 
H4S 2A3, Canada; North America toll-free telephone 1-866-538-1247 or 
direct-dial telephone 1-514-855-2999; email [email protected]; 
internet https://www.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.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0784; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this NPRM, any comments received, and other information. The street 
address for Docket Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Elizabeth Dowling, Aerospace Engineer, 
Mechanical Systems and Administrative Services 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]v.

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-2021-0784; Project Identifier 
MCAI-2020-01455-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 proposed AD.

Confidential Business Information

    CBI is commercial or financial information that is both customarily 
and actually treated as private by its owner. Under the Freedom of 
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public 
disclosure. If your comments responsive to this NPRM

[[Page 51030]]

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 Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and 
Administrative Services 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-2020-44, dated October 23, 
2020 (referred to after this as the Mandatory Continuing Airworthiness 
Information, or ``the MCAI''), to correct an unsafe condition for 
certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), 
and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. You may 
examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0784.
    This proposed AD was prompted by a determination that new or more 
restrictive airworthiness limitations are necessary. The FAA is 
proposing this AD to address fatigue cracking and loss of structural 
integrity of the circumferential splice joint, which could result in 
reduced structural integrity of the airplane. See the MCAI for 
additional background information.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed the following Bombardier service information, 
which describes new or more restrictive airworthiness limitations (a 
special detailed inspection for cracking of the skin circumferential 
splice at fuselage station (FS) 559.00, between stringer (STR) 10L and 
STR10R. These documents are distinct since they apply to different 
airplane configurations. (Note: The asterisk (or ``one star'') with the 
last three digits of the task number indicates that the task is an 
airworthiness limitation task.)
     Task 53-30-00-165*, ``Special Detailed Inspection of the 
Skin Circumferential Splice at FS559.00 between STR10L and STR10R,'' of 
Bombardier Challenger 605 CL-600-1A11 Time Limits/Maintenance Checks 
(TLMC), Product Support Publication (PSP) 605, Temporary Revision (TR) 
5-163, dated April 30, 2020.
     Task 53-30-00-188*, ``Special Detailed Inspection of the 
Skin Circumferential Splice at FS559.00 between STR10L and STR10R,'' of 
Bombardier Challenger CL-600-2A12 TLMC, PSP 601-5, TR 5-267, dated 
April 30, 2020.
     Task 53-30-00-191*, ``Special Detailed Inspection of the 
Skin Circumferential Splice at FS559.00 between STR10L and STR10R,'' of 
Bombardier Challenger CL-600-2B16 TLMC, PSP 601A-5, TR 5-281, dated 
April 30, 2020.
     Task 53-20-00-192*, ``Special Detailed Inspection of the 
Skin Circumferential Splice at FS559.00 between STR10L and STR10R,'' of 
Bombardier Challenger CL-600-2B16, CH 604, TLMC, Revision 32, dated 
December 18, 2019.
     Task 53-20-00-192*, ``Special Detailed Inspection of the 
Skin Circumferential Splice at FS559.00 between STR10L and STR10R,'' of 
Bombardier Challenger CL-600-2B16, CH 605, TLMC, Revision 21, dated 
December 18, 2019.
     Task 53-20-00-192*, ``Special Detailed Inspection of the 
Skin Circumferential Splice at FS559.00 between STR10L and STR10R,'' of 
Bombardier Challenger CL-600-2B16, CH 650, TLMC, Revision 8, dated 
December 18, 2019.
    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 Requirements of This NPRM

    This proposed AD would require revising the existing maintenance or 
inspection program, as applicable, to incorporate new or more 
restrictive airworthiness limitations.
    This proposed AD would require revisions to certain operator 
maintenance documents to include new actions (e.g., inspections). 
Compliance with these actions is required by 14 CFR 91.403(c). For 
airplanes that have been previously modified, altered, or repaired in 
the areas addressed by this proposed AD, the operator may not be able 
to accomplish the actions described in the revisions. In this 
situation, to comply with 14 CFR 91.403(c), the operator must request 
approval for an alternative method of compliance according to paragraph 
(i)(1) of this proposed AD.

Costs of Compliance

    The FAA estimates that this proposed AD affects 463 airplanes of 
U.S. registry. The FAA estimates the following costs to comply with 
this proposed AD:
    The FAA has determined that revising the maintenance or inspection 
program takes an average of 90 work-hours per operator, although the 
agency recognizes that this number may vary from operator to operator. 
Since operators incorporate maintenance or inspection program changes 
for their affected fleet(s), the FAA has determined that a per-operator 
estimate is more accurate than a per-airplane estimate. Therefore, the 
agency estimates the average total cost per operator to be $7,650 (90 
work-hours x $85 per work-hour).

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.

[[Page 51031]]

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.

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-2021-0784; Project Identifier MCAI-
2020-01455-T.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive by 
October 29, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., airplanes, certificated in 
any category, identified in paragraphs (c)(1) through (3) of this 
AD.
    (1) Model CL-600-1A11 (600) airplanes, serial numbers 1004 
through 1085 inclusive.
    (2) Model CL-600-2A12 (601) airplanes, serial numbers 3001 
through 3066 inclusive.
    (3) Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) 
airplanes, serial numbers 5001 through 5194 inclusive, 5301 through 
5665 inclusive, 5701 through 6049 inclusive, and 6050 through 6999 
inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 05, Time Limits/
Maintenance Checks.

(e) Reason

    This AD was prompted by a determination that new or more 
restrictive airworthiness limitations are necessary. The FAA is 
issuing this AD to address fatigue cracking and loss of structural 
integrity of the circumferential splice joint, which could result in 
reduced structural integrity of the airplane.

(f) Compliance

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

(g) Maintenance or Inspection Program Revision

    Within 60 days after the effective date of this AD, revise the 
existing maintenance or inspection program, as applicable, to 
incorporate the information specified in Figure 1 to paragraph (g) 
of this AD. The initial compliance time for doing the tasks is at 
the time specified in the applicable document specified in Figure 1 
to paragraph (g) of this AD, or within 60 days after the effective 
date of this AD, whichever occurs later.
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[[Page 51032]]

[GRAPHIC] [TIFF OMITTED] TP14SE21.003

(h) No Alternative Actions or Intervals

    After the existing maintenance or inspection program has been 
revised as required by paragraph (g) of this AD, no alternative 
actions (e.g., inspections) or intervals, may be used unless the 
actions and intervals are approved as an alternative method of 
compliance (AMOC) in accordance with the procedures specified in 
paragraph (i)(1) of this AD.

(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

[[Page 51033]]

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 
Bombardier, Inc.'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-2020-44, dated October 23, 2020, 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-2021-0784.
    (2) For more information about this AD, contact Elizabeth 
Dowling, Aerospace Engineer, Mechanical Systems and Administrative 
Services 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]v.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 200 C[ocirc]te Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone 1-
866-538-1247 or direct-dial telephone 1-514-855-2999; email 
[email protected]; internet https://www.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.

    Issued on September 8, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-19703 Filed 9-13-21; 8:45 am]
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