[Federal Register Volume 85, Number 193 (Monday, October 5, 2020)]
[Proposed Rules]
[Pages 62626-62630]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-21882]



[[Page 62626]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0691; Product Identifier 2020-NM-064-AD]
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).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 
100 & 440) airplanes. This proposed AD was prompted by evidence that a 
revised structural life limit of some components of the nose landing 
gear (NLG) and/or main landing gear (MLG) was not implemented during 
repair. This proposed AD would require verifying that the affected 
components are installed on the airplane, revising the structural life 
limits in the structural deviation inspection requirements (SDIR) 
airplane document, and replacing affected components if necessary. 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 November 
19, 2020.

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, Canada, 
J7N 1E1; 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.

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-2020-
0691; 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. Comments will be 
available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer, 
Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart 
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7330; 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 the ADDRESSES section. Include ``Docket No. FAA-2020-0691; 
Product Identifier 2020-NM-064-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 this NPRM 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 FAA 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 the 
person identified in the FOR FURTHER INFORMATION CONTACT section. Any 
commentary that the FAA receives which is not specifically designated 
as CBI will be placed in the public docket for this rulemaking.

Discussion

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian AD CF-2020-09, dated April 7, 
2020 (referred to after this as the Mandatory Continuing Airworthiness 
Information, or ``the MCAI''), to correct an unsafe condition for 
certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 
& 440) 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-2020-0691.
    This proposed AD was prompted by evidence that some components of 
the NLG and/or MLG were repaired using Bombardier Repair Engineering 
Orders (REOs) that resulted in a specific airworthiness limitation 
(SAL). In certain cases, the related SDIRs were not attached to the REO 
when the parts were repaired and provided to the operator. 
Consequently, the SDIR was not incorporated into the SDIR airplane 
document and the revised life limit of the repaired NLG and/or MLG 
components, as indicated in the SDIR, was not implemented. Those parts, 
repaired by REO that resulted in an SDIR, have a structural life limit 
that is lower than the life limit published in the Maintenance 
Requirements Manual (MRM). The FAA is proposing this AD to address 
structural life limits that are lower than the life limit published in 
the MRM, Part 2. This condition, if not corrected, could lead to the 
collapse of the affected NLG and/or MLG, possibly resulting in airplane 
damage and injury to the occupants. See the MCAI for additional 
background information.

[[Page 62627]]

Related Service Information Under 1 CFR Part 51

    Bombardier has issued Service Bulletin 601R-32-112, dated November 
11, 2019. This service information describes procedures for verifying 
that affected components are installed on the airplane, revising the 
structural life limits in the SDIR airplane document, and replacing 
affected parts if necessary.
    The following service information describes certain repairs and 
structural life limits for the NLG and MLG components. These documents 
are distinct since they apply to different repair configurations.
     Bombardier Repair Engineering Order (REO) 601R-32-11-086, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-11-089, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-11-183, 
Revision B, dated January 15, 2013.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0367, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0627, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0630, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-634, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0712, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0783, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-786, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-835, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0913, 
Revision C, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-918, 
Revision B, dated January 15, 2014.
     Bombardier Repair Engineering Order (REO) 601R-32-11-921, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0951, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0955, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-956, 
Revision A, dated January 15, 2014.
     Bombardier Repair Engineering Order (REO) 601R-32-11-0958, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1017, 
Revision A, dated July 15, 2011.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1041, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1084, 
Revision A, dated January 15, 2014.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1153, 
Revision A, dated January 15, 2014.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1154, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1187, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1206, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1219, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1220, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1224, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1250, 
Revision A, dated January 15, 2014.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1251, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1255, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1286, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1302, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1650, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-11-1673, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0225, 
Revision C, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0227, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-414, 
Revision A, dated February 25, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-21-489, 
Revision A, dated October 29, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0526, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-535, 
Revision A, dated February 17, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0536, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0555, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0557, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0562, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-570, 
Revision A, dated February 25, 2015.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0635, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0661, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0663, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0685, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0689, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0691, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0692, 
Revision C, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-0693, 
Revision B, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-1002, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-21-1022, 
Revision A, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-32-0056, 
Revision C, dated January 23, 2019.
     Bombardier Repair Engineering Order (REO) 601R-32-32-0076, 
Revision B, dated January 23, 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 our bilateral agreement with the State of Design Authority, the FAA 
has been notified of the unsafe condition described in the MCAI and 
service

[[Page 62628]]

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 accomplishing the actions specified 
in the service information described previously, except as discussed 
under ``Differences Between this Proposed AD and the MCAI or Service 
Information.''

Costs of Compliance

    The FAA estimates that this proposed AD affects 456 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            Cost per product      Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 143 work-hours x $85 per hour =  Up to $103,114.........  Up to $115,269.........  Up to $52,562,664.
 Up to $12,155.
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Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: General requirements. 
Under that section, Congress charges the FAA with promoting safe flight 
of civil aircraft in air commerce by prescribing regulations for 
practices, methods, and procedures the Administrator finds necessary 
for safety in air commerce. 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 (AD):

MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, 
Inc.): Docket No. FAA-2020-0691; Product Identifier 2020-NM-064-AD.

(a) Comments Due Date

    The FAA must receive comments by November 19, 2020.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to 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, serial 
numbers 7003 through 8999 inclusive.

(d) Subject

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

(e) Reason

    This AD was prompted by evidence that a revised structural life 
limit of some components of the nose landing gear (NLG) and/or main 
landing gear (MLG) was not implemented during repair. The FAA is 
issuing this AD to address structural life limits that are lower 
than the life limits published in the Maintenance Requirements 
Manual (MRM), Part 2. This condition, if not corrected, could lead 
to the collapse of the affected NLG and/or MLG, possibly resulting 
in airplane damage and injury to the occupants.

(f) Compliance

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

(g) Verification of Airplane or Technical Records

    Within 6 months from the effective date of this AD: Verify the 
airplane or technical records to determine if an NLG or MLG 
component listed in Table 1 or Table 2 of Bombardier Service 
Bulletin 601R-32-112, dated November 11, 2019, is installed on the 
airplane. If this verification determines that an affected component 
listed in Table 1 or Table 2 of Bombardier Service Bulletin 601R-32-
112, dated November 11, 2019, is installed on the airplane, perform 
the actions specified in paragraph (h) or (i) of this AD, as 
applicable.

(h) Incorporation of the SDIR Life Limit Into the SDIR Airplane 
Document

    If the total flight cycles of the component is less than the 
revised SDIR life limit specified in the applicable REO identified 
in paragraphs (h)(1) through (58) of this AD minus 2,000 flight 
cycles: Within 12 months after completing the actions specified in 
paragraph (g) of this AD, incorporate the revised life limit of the 
affected component into the existing SDIR airplane document as 
specified in the applicable REO identified in paragraphs (h)(1) 
through (58) of this AD.
    (1) Bombardier Repair Engineering Order (REO) 601R-32-11-086, 
Revision A, dated October 29, 2015.
    (2) Bombardier Repair Engineering Order (REO) 601R-32-11-089, 
Revision A, dated October 29, 2015.
    (3) Bombardier Repair Engineering Order (REO) 601R-32-11-183, 
Revision B, dated January 15, 2013.
    (4) Bombardier Repair Engineering Order (REO) 601R-32-11-0367, 
Revision A, dated January 23, 2019.
    (5) Bombardier Repair Engineering Order (REO) 601R-32-11-0627, 
Revision A, dated January 23, 2019.
    (6) Bombardier Repair Engineering Order (REO) 601R-32-11-0630, 
Revision A, dated January 23, 2019.
    (7) Bombardier Repair Engineering Order (REO) 601R-32-11-634, 
Revision A, dated October 29, 2015.
    (8) Bombardier Repair Engineering Order (REO) 601R-32-11-0712, 
Revision A, dated January 23, 2019.

[[Page 62629]]

    (9) Bombardier Repair Engineering Order (REO) 601R-32-11-0783, 
Revision A, dated January 23, 2019.
    (10) Bombardier Repair Engineering Order (REO) 601R-32-11-786, 
Revision A, dated January 23, 2019.
    (11) Bombardier Repair Engineering Order (REO) 601R-32-11-835, 
Revision A, dated October 29, 2015.
    (12) Bombardier Repair Engineering Order (REO) 601R-32-11-0913, 
Revision C, dated January 23, 2019.
    (13) Bombardier Repair Engineering Order (REO) 601R-32-11-918, 
Revision B, dated January 15, 2014.
    (14) Bombardier Repair Engineering Order (REO) 601R-32-11-921, 
Revision A, dated October 29, 2015.
    (15) Bombardier Repair Engineering Order (REO) 601R-32-11-0951, 
Revision B, dated January 23, 2019.
    (16) Bombardier Repair Engineering Order (REO) 601R-32-11-0955, 
Revision B, dated January 23, 2019.
    (17) Bombardier Repair Engineering Order (REO) 601R-32-11-956, 
Revision A, dated January 15, 2014.
    (18) Bombardier Repair Engineering Order (REO) 601R-32-11-0958, 
Revision B, dated January 23, 2019.
    (19) Bombardier Repair Engineering Order (REO) 601R-32-11-1017, 
Revision A, dated July 15, 2011.
    (20) Bombardier Repair Engineering Order (REO) 601R-32-11-1041, 
Revision A, dated October 29, 2015.
    (21) Bombardier Repair Engineering Order (REO) 601R-32-11-1084, 
Revision A, dated January 15, 2014.
    (22) Bombardier Repair Engineering Order (REO) 601R-32-11-1153, 
Revision A, dated January 15, 2014.
    (23) Bombardier Repair Engineering Order (REO) 601R-32-11-1154, 
Revision B, dated January 23, 2019.
    (24) Bombardier Repair Engineering Order (REO) 601R-32-11-1187, 
Revision B, dated January 23, 2019.
    (25) Bombardier Repair Engineering Order (REO) 601R-32-11-1206, 
Revision B, dated January 23, 2019.
    (26) Bombardier Repair Engineering Order (REO) 601R-32-11-1219, 
Revision B, dated January 23, 2019.
    (27) Bombardier Repair Engineering Order (REO) 601R-32-11-1220, 
Revision B, dated January 23, 2019.
    (28) Bombardier Repair Engineering Order (REO) 601R-32-11-1224, 
Revision B, dated January 23, 2019.
    (29) Bombardier Repair Engineering Order (REO) 601R-32-11-1250, 
Revision A, dated January 15, 2014.
    (30) Bombardier Repair Engineering Order (REO) 601R-32-11-1251, 
Revision B, dated January 23, 2019.
    (31) Bombardier Repair Engineering Order (REO) 601R-32-11-1255, 
Revision B, dated January 23, 2019.
    (32) Bombardier Repair Engineering Order (REO) 601R-32-11-1286, 
Revision B, dated January 23, 2019.
    (33) Bombardier Repair Engineering Order (REO) 601R-32-11-1302, 
Revision B, dated January 23, 2019.
    (34) Bombardier Repair Engineering Order (REO) 601R-32-11-1650, 
Revision A, dated January 23, 2019.
    (35) Bombardier Repair Engineering Order (REO) 601R-32-11-1673, 
Revision A, dated January 23, 2019.
    (36) Bombardier Repair Engineering Order (REO) 601R-32-21-0225, 
Revision C, dated January 23, 2019.
    (37) Bombardier Repair Engineering Order (REO) 601R-32-21-0227, 
Revision B, dated January 23, 2019.
    (38) Bombardier Repair Engineering Order (REO) 601R-32-21-414, 
Revision A, dated February 25, 2015.
    (39) Bombardier Repair Engineering Order (REO) 601R-32-21-489, 
Revision A, dated October 29, 2015.
    (40) Bombardier Repair Engineering Order (REO) 601R-32-21-0526, 
Revision B, dated January 23, 2019.
    (41) Bombardier Repair Engineering Order (REO) 601R-32-21-535, 
Revision A, dated February 17, 2015.
    (42) Bombardier Repair Engineering Order (REO) 601R-32-21-0536, 
Revision B, dated January 23, 2019.
    (43) Bombardier Repair Engineering Order (REO) 601R-32-21-0555, 
Revision B, dated January 23, 2019.
    (44) Bombardier Repair Engineering Order (REO) 601R-32-21-0557, 
Revision B, dated January 23, 2019.
    (45) Bombardier Repair Engineering Order (REO) 601R-32-21-0562, 
Revision B, dated January 23, 2019.
    (46) Bombardier Repair Engineering Order (REO) 601R-32-21-570, 
Revision A, dated February 25, 2015.
    (47) Bombardier Repair Engineering Order (REO) 601R-32-21-0635, 
Revision B, dated January 23, 2019.
    (48) Bombardier Repair Engineering Order (REO) 601R-32-21-0661, 
Revision B, dated January 23, 2019.
    (49) Bombardier Repair Engineering Order (REO) 601R-32-21-0663, 
Revision B, dated January 23, 2019.
    (50) Bombardier Repair Engineering Order (REO) 601R-32-21-0685, 
Revision B, dated January 23, 2019.
    (51) Bombardier Repair Engineering Order (REO) 601R-32-21-0689, 
Revision B, dated January 23, 2019.
    (52) Bombardier Repair Engineering Order (REO) 601R-32-21-0691, 
Revision B, dated January 23, 2019.
    (53) Bombardier Repair Engineering Order (REO) 601R-32-21-0692, 
Revision C, dated January 23, 2019.
    (54) Bombardier Repair Engineering Order (REO) 601R-32-21-0693, 
Revision B, dated January 23, 2019.
    (55) Bombardier Repair Engineering Order (REO) 601R-32-21-1002, 
Revision A, dated January 23, 2019.
    (56) Bombardier Repair Engineering Order (REO) 601R-32-21-1022, 
Revision A, dated January 23, 2019.
    (57) Bombardier Repair Engineering Order (REO) 601R-32-32-0056, 
Revision C, dated January 23, 2019.
    (58) Bombardier Repair Engineering Order (REO) 601R-32-32-0076, 
Revision B, dated January 23, 2019.

(i) Replacement of Repaired NLG and/or MLG Component

    If the total flight cycles of the component is equal to or more 
than the revised SDIR life limit specified in the applicable REO 
identified in paragraphs (h)(1) through (58) of this AD minus 2,000 
flight cycles: Within 12 months or 2,000 flight cycles, whichever 
occurs first, after completing the actions specified in paragraph 
(g) of this AD, replace the affected component with a serviceable 
component.

(j) Parts Installation Prohibition

    As of the effective date of this AD, no person may install any 
component listed in Table 1 or Table 2 of Bombardier Service 
Bulletin 601R-32-112, dated November 11, 2019, on any airplane 
without first incorporating the actions specified in paragraph (h) 
or (i) of this AD, as applicable.

(k) 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 local Flight Standards District 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 
local flight standards district office/certificate holding district 
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.

(l) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian AD CF-2020-09, dated April 7, 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-2020-0691.
    (2) For more information about this AD, contact Andrea Jimenez, 
Aerospace Engineer, Airframe and Propulsion Section, FAA, New York 
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
telephone 516-228-7330; 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, Qu[eacute]bec, 
Canada, J7N 1E1; Widebody Customer Response Center North America 
toll-free telephone +1-

[[Page 62630]]

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 August 10, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-21882 Filed 10-2-20; 8:45 am]
BILLING CODE 4910-13-P


