Proposed Rule2023-15986
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
July 28, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
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), CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL- 600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD was prompted by reports of power control unit (PCU) rod end fractures due to pitting corrosion, and a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would, for certain airplanes, require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. This proposed AD would also require accomplishing certain aircraft maintenance manual (AMM) tasks and corrective actions following short-term or long-term storage. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 88 Issue 144 (Friday, July 28, 2023)</title>
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[Federal Register Volume 88, Number 144 (Friday, July 28, 2023)]
[Proposed Rules]
[Pages 48767-48771]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-15986]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-1639; Project Identifier MCAI-2023-00109-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).
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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), CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11
(Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-
600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet
Series 1000) airplanes. This proposed AD was prompted by reports of
power control unit (PCU) rod end fractures due to pitting corrosion,
and a determination that new or more restrictive airworthiness
limitations are necessary. This proposed AD would, for certain
airplanes, require revising the existing maintenance or inspection
program, as applicable, to incorporate new or more restrictive
airworthiness limitations. This proposed AD would also require
accomplishing certain aircraft maintenance manual (AMM) tasks and
corrective actions following short-term or long-term storage. 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 September
11, 2023.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="http://regulations.gov">regulations.gov</a>. Follow
the instructions for submitting comments.
<bullet> Fax: 202-493-2251.
<bullet> 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.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-1639; or in person at Docket Operations between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD
docket contains this NPRM, the mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
street address for Docket Operations is listed above.
Material Incorporated by Reference:
<bullet> For service information identified in this NPRM, contact
MHI RJ Aviation Group, Customer Response Center, 3655 Ave. des Grandes-
Tourelles, Suite 110, Boisbriand, Qu[eacute]bec J7H 0E2 Canada; North
America toll-free telephone 833-990-7272 or direct-dial telephone 450-
990-7272; fax 514-855-8501; email <a href="/cdn-cgi/l/email-protection#4d392529632e3f270d712c6d253f282b70" http: mhirj.com">mhirj.com</a>">thd.crj@<a href="http://mhirj.com">mhirj.com</a></a>; website <a href="http://mhirj.com">mhirj.com</a>.
<bullet> You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200 South
216th St., Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195.
FOR FURTHER INFORMATION CONTACT: Gabriel Kim, Aviation Safety Engineer,
FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-
228-7300; email <a href="/cdn-cgi/l/email-protection#81b8ace0f7f2aceff8e0e2eeace2eef2c1e7e0e0afe6eef7"><span class="__cf_email__" data-cfemail="6e57430f181d4300170f0d01430d011d2e080f0f40090118">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
[[Page 48768]]
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2023-1639; Project Identifier
MCAI-2023-00109-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
<a href="http://regulations.gov">regulations.gov</a>, 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, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#a69f8bc7d0d58bc8dfc7c5c98bc5c9d5e6c0c7c788c1c9d0"><span class="__cf_email__" data-cfemail="655c48041316480b1c04060a48060a16250304044b020a13">[email protected]</span></a>. Any commentary that the FAA receives which is not
specifically designated as CBI will be placed in the public docket for
this rulemaking.
Background
Transport Canada, which is the aviation authority for Canada, has
issued Transport Canada AD CF-2023-03, dated January 20, 2023
(Transport Canada AD CF-2023-03) (also referred to as the MCAI), to
correct an unsafe condition for all MHI RJ Aviation ULC Model CL-600-
2B19 (Regional Jet Series 100 & 440), CL-600-2C10 (Regional Jet Series
700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15
(Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and
CL-600-2E25 (Regional Jet Series 1000) airplanes. The MCAI states that
in-service reports of PCU rod end fractures due to pitting corrosion
led to the issuance of Transport Canada AD CF-2018-29, dated November
2, 2018 (which corresponds to FAA AD 2019-19-08, Amendment 39-19744 (84
FR 60902, November 12, 2019) (AD 2019-19-08). AD 2019-19-08 requires
detailed inspections of the elevator PCU rod ends and applicable
corrective actions, and prohibits using certain aircraft maintenance
manual tasks. Pitting corrosion can cause the PCU end rod spherical
bearing to seize, potentially inducing a bending moment on the PCU
output rod. The bending moment will eventually fracture the rod end.
This condition, if not corrected, could lead to a disconnect between
the PCU and the elevator or rudder control surface, resulting in
potential loss of the control surface function or inadequate flutter
suppression. Since Transport Canada AD CF-2018-29 was issued, MHI RJ
conducted further safety analyses and determined that new or more
restrictive airworthiness limitations are necessary for the operational
check of each individual rudder PCU and elevator PCU. Additionally,
Transport Canada determined that certain return-to-service AMM tasks
are needed following short-term or long-term airplane storage.
The FAA is proposing this AD to address the unsafe condition on
these products. You may examine the MCAI in the AD docket at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2023-1639.
Related Service Information Under 1 CFR Part 51
The FAA reviewed MHI RJ Temporary Revisions ALI-0757 and ALI-0759,
both dated September 24, 2021. This service information specifies new
or more restrictive airworthiness limitations for the elevator and
rudder PCUs.
The FAA also reviewed the following service information. This
service information specifies, among other tasks, operational tests of
the rudder control and elevator control systems, and detailed
inspections of the rudder PCU rod end spherical ball and elevator PCU
rod end spherical ball, and corrective actions. Corrective actions
include making sure that the applicable parts are moving or rotating
correctly. These documents are distinct since they apply to different
airplane models in different configurations.
<bullet> Subject 27-23-01, Power Control Unit (PCU)--Rudder,
Chapter 27--Flight Controls, MHI RJ CRJ700/900/1000 Aircraft
Maintenance Manual, Part 2, CSP B-001, Revision 71, dated December 16,
2022.
<bullet> Subject 27-33-01, Power Control Unit (PCU)--Elevator,
Chapter 27, Flight Controls, MHI RJ CRJ700/900/1000 Aircraft
Maintenance Manual, Part 2, CSP B-001, Revision 71, dated December 16,
2022.
<bullet> Task 27-21-00-710-805, Operational Test of the Rudder
Control System, Subject 27-21-00, Rudder Control System, Chapter 27,
Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-
001, Revision 66, dated October 10, 2022.
<bullet> Task 27-23-01-220-801, Detailed Inspection of the Rudder
PCU Rod End Spherical Ball, Subject 27-23-01, Power Control Unit (PCU),
Rudder, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft
Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022.
<bullet> Task 27-31-00-710-803, Operational Test of the Elevator
Control System, Subject 27-31-00, Elevator Control System, Chapter 27,
Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-
001, Revision 66, dated October 10, 2022.
<bullet> Task 27-33-01-220-801, Detailed Inspection of the Elevator
PCU Rod End Spherical Ball, Subject 27-33-01, Power Control Unit (PCU),
Elevator, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft
Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022.
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 ADDRESSES.
FAA's Determination
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to the FAA's bilateral agreement with this State of Design Authority,
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
[[Page 48769]]
incorporate new or more restrictive airworthiness limitations. This
proposed AD would also require accomplishing certain AMM tasks and
corrective actions following short-term or long-term storage.
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
(j)(1) of this proposed AD.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 1,125 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 8 work-hours x $85 per hour = $0 Up to $680.................. Up to $765,000.
$680.
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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.
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:
MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier,
Inc.): Docket No. FAA-2023-1639; Project Identifier MCAI-2023-00109-
T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by September 11, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all MHI RJ Aviation ULC (Type Certificate
previously held by Bombardier, Inc.) airplanes identified in
paragraphs (c)(1) through (6) of this AD, certificated in any
category.
(1) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes.
(2) Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplanes.
(3) Model CL-600-2C11 (Regional Jet Series 550) airplanes.
(4) Model CL-600-2D15 (Regional Jet Series 705) airplanes.
(5) Model CL-600-2D24 (Regional Jet Series 900) airplanes.
(6) Model CL-600-2E25 (Regional Jet Series 1000) airplanes.
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
controls.
(e) Reason
This AD was prompted by reports of power control unit (PCU) rod
end fractures due to pitting corrosion and a determination that new
or more restrictive airworthiness limitations are necessary. The FAA
is issuing this AD to address fractured PCU rod ends. This
condition, if not addressed, could lead to a disconnect between the
PCU and the elevator or rudder control surface, resulting in
potential loss of the control surface function or inadequate flutter
suppression.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions for Model CL-600-2B19 Airplanes
For Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes:
Within 60 days after the effective date of this AD, when returning
an airplane from long-term storage (storage lasting more than 28
days), do the actions specified in paragraphs (g)(1) through (4) of
this AD. Do all applicable corrective actions before further flight.
(1) Accomplish an operational test and applicable corrective
actions, in accordance with Task 27-21-00-710-805, Operational Test
of the Rudder Control System, Subject 27-21-00, Rudder Control
System, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft
Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022.
[[Page 48770]]
(2) Accomplish an operational test and applicable corrective
actions, in accordance with Task 27-31-00-710-803, Operational Test
of the Elevator Control System, Subject 27-31-00, Elevator Control
System, Chapter 27, Flight Controls, of MHI RJ CRJ200 Aircraft
Maintenance Manual, CSP A-001, Revision 66, dated October 10, 2022.
(3) Accomplish a detailed inspection and applicable corrective
actions, in accordance with Task 27-23-01-220-801, Detailed
Inspection of the Rudder PCU Rod End Spherical Ball, Subject 27-23-
01, Power Control Unit (PCU), Rudder, Chapter 27, Flight Controls,
of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-001, Revision
66, dated October 10, 2022.
(4) Accomplish a detailed inspection and applicable corrective
actions in accordance with Task 27-33-01-220-801, Detailed
Inspection of the Elevator PCU Rod End Spherical Ball, Subject 27-
33-01, Power Control Unit (PCU), Elevator, Chapter 27, Flight
Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP A-001,
Revision 66, dated October 10, 2022.
(h) Required Actions for Model CL-600-2C10, CL-600-2C11, CL-600-2D15
and CL-600-2D24 Airplanes
For Model CL-600-2C10 (Regional Jet Series 700, 701, & 702); CL-
600-2C11 (Regional Jet Series 550); CL-600-2D15 (Regional Jet Series
705); and CL-600-2D24 (Regional Jet Series 900) airplanes:
Accomplish the actions required by paragraphs (h)(1) through (3) of
this AD, as applicable.
(1) 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 MHI RJ Temporary Revisions
ALI-0757 and ALI-0759, both dated September 24, 2021. The initial
compliance time for doing the tasks is within 400 flight hours or 6
months, whichever occurs first after the effective date of this AD;
or within 60 days after the effective date of this AD; whichever
occurs latest.
(2) Within 60 days after the effective date of this AD, when
returning an airplane from short-term storage (storage lasting 28
days or less), do the actions specified in paragraphs (h)(2)(i) and
(ii) of this AD. Do all applicable corrective actions before further
flight.
(i) Accomplish an operational test and applicable corrective
actions, in accordance with Task 27-23-01-710-801, Operational Test
of the Rudder PCU, Subject 27-23-01, Power Control Unit (PCU),
Rudder, Chapter 27, Flight Controls, of MHI RJ CRJ700/900/1000
Aircraft Maintenance Manual, Part 2, CSP B-001, Revision 71, dated
December 16, 2022.
(ii) Accomplish an operational test and applicable corrective
actions in accordance with Task 27-33-01-710-802, Operational Test
of the Elevator Power-Control Units (PCUs), Subject 27-33-01, Power
Control Unit (PCU), Elevator, Chapter 27, Flight Controls, of MHI RJ
CRJ700/900/1000 Aircraft Maintenance Manual, Part 2, CSP B-001,
Revision 71, dated December 16, 2022.
(3) Within 60 days after the effective date of this AD, when
returning an airplane from long-term storage (storage lasting more
than 28 days), do the actions specified in paragraphs (h)(3)(i)
through (iv) of this AD. Do all applicable corrective actions before
further flight.
(i) Accomplish an operational test and applicable corrective
actions, in accordance with Task 27-23-01-710-801, Operational Test
of the Rudder PCU, Subject 27-23-01, Power Control Unit (PCU),
Rudder, Chapter 27, Flight Controls, of MHI RJ CRJ700/900/1000
Aircraft Maintenance Manual, Part 2, CSP B-001, Revision 71, dated
December 16, 2022.
(ii) Accomplish an operational test and applicable corrective
actions in accordance with Task 27-33-01-710-802, Operational Test
of the Elevator Power-Control Units (PCUs), Subject 27-33-01, Power
Control Unit (PCU), Elevator, Chapter 27, Flight Controls, of MHI RJ
CRJ700/900/1000 Aircraft Maintenance Manual, Part 2, CSP B-001,
Revision 71, dated December 16, 2022.
(iii) Accomplish a detailed inspection and applicable corrective
actions in accordance with Task 27-23-01-220-802, Detailed
Inspection of the Rudder PCU Rod End Spherical Ball, Subject 27-23-
01, Power Control Unit (PCU), Rudder, Chapter 27, Flight Controls,
of MHI RJ CRJ700/900/1000 Aircraft Maintenance Manual, Part 2, CSP
B-001, Revision 71, dated December 16, 2022.
(iv) Accomplish a detailed inspection and applicable corrective
actions, in accordance with Task 27-33-01-220-801, Detailed
Inspection of the Elevator PCU Rod End Spherical Ball, Subject 27-
33-01, Power Control Unit (PCU), Elevator, Chapter 27, Flight
Controls, of MHI RJ CRJ700/900/1000 Aircraft Maintenance Manual,
Part 2, CSP B-001, Revision 71, dated December 16, 2022.
(i) Required Actions for Model CL-600-2E25 Airplanes
For Model CL-600-2E25 (Regional Jet Series 1000) airplanes:
Accomplish the actions specified in paragraphs (i)(1) through (3) of
this AD, as applicable.
(1) 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 MHI RJ Temporary Revisions
ALI-0757 and ALI-0759, both dated September 24, 2021. The initial
compliance time for doing the tasks is within 400 flight hours or 6
months, whichever occurs first after the effective date of this AD;
or within 60 days after the effective date of this AD; whichever
occurs latest.
(2) Within 60 days after the effective date of this AD, when
returning an airplane from short-term storage (storage lasting 28
days or less): Accomplish an operational test and applicable
corrective actions in accordance with Task 27-33-01-710-802,
Operational Test of the Elevator Power-Control Units (PCUs), Subject
27-33-01, Power Control Unit (PCU), Elevator, Chapter 27, Flight
Controls, of MHI RJ CRJ700/900/1000 Aircraft Maintenance Manual,
Part 2, CSP B-001, Revision 71, dated December 16, 2022. Do all
applicable corrective actions before further flight.
(3) Within 60 days after the effective date of this AD, when
returning an airplane from long-term storage (storage lasting more
than 28 days), do the actions specified in paragraphs (i)(3)(i) and
(ii) of this AD. Do all applicable corrective actions before further
flight.
(i) Accomplish an operational test and applicable corrective
actions, in accordance with Task 27-33-01-710-802, Operational Test
of the Elevator Power-Control Units (PCUs), Subject 27-33-01, Power
Control Unit (PCU), Elevator, Chapter 27, Flight Controls, of MHI RJ
CRJ700/900/1000 Aircraft Maintenance Manual, Part 2, CSP B-001,
Revision 71, dated December 16, 2022.
(ii) Accomplish a detailed inspection and applicable corrective
actions, in accordance with Task 27-33-01-220-801, Detailed
Inspection of the Elevator PCU Rod End Spherical Ball, Subject 27-
33-01, Power Control Unit (PCU), Elevator, Chapter 27, Flight
Controls, of MHI RJ CRJ700/900/1000 Aircraft Maintenance Manual,
Part 2, CSP B-001, Revision 71, dated December 16, 2022.
(j) No Alternative Actions or Intervals
After the existing maintenance or inspection program has been
revised as required by paragraphs (h)(1) and (i)(1) 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 (j)(1) of this AD.
(j) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Validation Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. In accordance with 14 CFR 39.19, send your request to your
principal inspector or responsible Flight Standards Office, as
appropriate. If sending information directly to the manager,
International Validation Branch, mail it to the address identified
in paragraph (j)(2) of this AD or email to: <a href="/cdn-cgi/l/email-protection#ecd5c1adbabfc1ada5bec1dbdfdcc1ada1a3afac8a8d8dc28b839a"><span class="__cf_email__" data-cfemail="f0c9ddb1a6a3ddb1b9a2ddc7c3c0ddb1bdbfb3b0969191de979f86">[email protected]</span></a>. If mailing information, also submit information by
email. Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, International
Validation Branch, FAA; or Transport Canada; or MHI RJ Aviation
ULC's Transport Canada Design Approval Organization (DAO). If
approved by the DAO, the approval must include the DAO-authorized
signature.
(k) Additional Information
(1) Refer to Transport Canada AD CF-2023-03, dated January 20,
2023, for related information. This Transport Canada AD may be found
in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2023-1639.
(2) For more information about this AD, contact Gabriel Kim,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite
[[Page 48771]]
410, Westbury, NY 11590; telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#b48d99d5c2c799dacdd5d7db99d7dbc7f4d2d5d59ad3dbc2"><span class="__cf_email__" data-cfemail="ebd2c68a9d98c685928a8884c6888498ab8d8a8ac58c849d">[email protected]</span></a>.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(i) MHI RJ Temporary Revision ALI-0757, dated September 24,
2021.
(ii) MHI RJ Temporary Revision ALI-0759, dated September 24,
2021.
(iii) Subject 27-23-01, Power Control Unit (PCU)--Rudder,
Chapter 27--Flight Controls, MHI RJ CRJ700/900/1000 Aircraft
Maintenance Manual, Part 2, CSP B-001, Revision 71, dated December
16, 2022.
(iv) Subject 27-33-01, Power Control Unit (PCU)--Elevator,
Chapter 27, Flight Controls, MHI RJ CRJ700/900/1000 Aircraft
Maintenance Manual, Part 2, CSP B-001, Revision 71, dated December
16, 2022.
(v) Task 27-21-00-710-805, Operational Test of the Rudder
Control System, Subject 27-21-00, Rudder Control System, Chapter 27,
Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual, CSP
A-001, Revision 66, dated October 10, 2022.
(vi) Task 27-23-01-220-801, Detailed Inspection of the Rudder
PCU Rod End Spherical Ball, Subject 27-23-01, Power Control Unit
(PCU), Rudder, Chapter 27, Flight Controls, of MHI RJ CRJ200
Aircraft Maintenance Manual, CSP A-001, Revision 66, dated October
10, 2022.
(vii) Task 27-31-00-710-803, Operational Test of the Elevator
Control System, Subject 27-31-00, Elevator Control System, Chapter
27 Flight Controls, of MHI RJ CRJ200 Aircraft Maintenance Manual,
CSP A-001, Revision 66, dated October 10, 2022.
(viii) Task 27-33-01-220-801, Detailed Inspection of the
Elevator PCU Rod End Spherical Ball, Subject 27-33-01, Power Control
Unit (PCU), Elevator, Chapter 27, Flight Controls, of MHI RJ CRJ200
Aircraft Maintenance Manual, CSP A-001, Revision 66, dated October
10, 2022.
(3) For service information identified in this AD, contact MHI
RJ Aviation Group, Customer Response Center, 3655 Ave. des Grandes-
Tourelles, Suite 110, Boisbriand, Qu[eacute]bec J7H 0E2 Canada;
North America toll-free telephone 833-990-7272 or direct-dial
telephone 450-990-7272; fax 514-855-8501; email <a href="/cdn-cgi/l/email-protection#403428246e23322a007c2160283225267d" http: mhirj.com">mhirj.com</a>">thd.crj@<a href="http://mhirj.com">mhirj.com</a></a>;
website <a href="http://mhirj.com">mhirj.com</a>.
(4) You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200
South 216th St., Des Moines, WA. For information on the availability
of this material at the FAA, call 206-231-3195.
(5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, email <a href="/cdn-cgi/l/email-protection#badcc894d3d4c9cadfd9ced3d5d4fad4dbc8db94ddd5cc"><span class="__cf_email__" data-cfemail="ef899dc186819c9f8a8c9b868081af818e9d8ec1888099">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on July 21, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-15986 Filed 7-27-23; 8:45 am]
BILLING CODE 4910-13-P
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</html>Indexed from Federal Register on July 28, 2023.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.