Rule2023-10334
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
May 16, 2023
Effective
June 20, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain 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 AD was prompted by reports from the supplier that sensing elements of the bleed air leak detection system were manufactured with insufficient salt fill, which can result in an inability to detect hot bleed air leaks. This AD requires testing of all affected overheat detection sensing elements of the bleed air leak detection system, and replacement if necessary. This AD also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 88 Issue 94 (Tuesday, May 16, 2023)</title>
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[Federal Register Volume 88, Number 94 (Tuesday, May 16, 2023)]
[Rules and Regulations]
[Pages 31154-31159]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-10334]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1474; Project Identifier MCAI-2022-00888-T;
Amendment 39-22409; AD 2023-07-07]
RIN 2120-AA64
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain 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 AD was prompted by reports from the
supplier that sensing elements of the bleed air leak detection system
were manufactured with insufficient salt fill, which can result in an
inability to detect hot bleed air leaks. This AD requires testing of
all affected overheat detection sensing elements of the bleed air leak
detection system, and replacement if necessary. This AD also prohibits
the installation of affected parts. The FAA is issuing this AD to
address the unsafe condition on these products.
DATES: This AD is effective June 20, 2023.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of June 20,
2023.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2022-1474; 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 final rule, the mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
<bullet> For service information identified in this final rule,
contact MHI RJ
[[Page 31155]]
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#790d111d571a0b1339451859110b1c1f44" 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. It is also available at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2022-1474.
FOR FURTHER INFORMATION CONTACT: Thomas Niczky, Aerospace Engineer,
Avionics & Electrical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7347;
email <a href="/cdn-cgi/l/email-protection#340d19554247195a4d55575b19575b47745255551a535b42"><span class="__cf_email__" data-cfemail="6a53470b1c194704130b0905470905192a0c0b0b440d051c">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain 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
NPRM published in the Federal Register on November 18, 2022 (87 FR
69210). The NPRM was prompted by AD CF-2022-16R1, dated July 5, 2022,
issued by Transport Canada, which is the aviation authority for Canada
(referred to after this as the MCAI). The MCAI states that MHI RJ
Aviation ULC received reports from the supplier of the overheat
detection sensing elements of a manufacturing quality escape. Some of
the sensing elements of the bleed air leak detection system were
manufactured with insufficient salt fill, which can result in an
inability to detect hot bleed air leaks and cause damage to surrounding
structures and systems that can prevent continued safe flight and
landing.
In the NPRM, the FAA proposed to require testing of all affected
overheat detection sensing elements of the bleed air leak detection
system, and replacement if necessary. The NPRM also proposed to
prohibit the installation of affected parts. The FAA is issuing 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-2022-1474.
Discussion of Final Airworthiness Directive
Comments
The FAA received a comment from the Air Line Pilots Association,
International (ALPA), who supported the NPRM without change.
The FAA received additional comments from two commenters, including
Endeavor Air and MHI RJ Aviation ULC. The following presents the
comments received on the NPRM and the FAA's response to each comment.
Request To Not Require Recording of Serial Number and Date Code
Endeavor Air requested that paragraph (h) of the proposed AD be
revised to not require recording of the sensing element serial number
and date code if not visible, unless the sensing element has failed.
Endeavor Air noted that the service information specifies to fill out a
data sheet for each sensing element and include it with each failed
sensing element, and the data sheet specifies to include the serial
number and date code of the sensing element. Endeavor Air noted that
obtaining the serial number and date code sometimes requires
disassembly of adjacent structure or components, which takes up to two
labor hours per sensing element. The commenter asserted that the cost
of two additional labor hours for the sole purpose of recording
information on a serviceable sensing element constitutes an undue
burden on the operator.
The FAA agrees to remove the requirement to record the sensing
element serial number and date code if they are not visible without
additional disassembly, provided that the part has not failed. However,
the Sensing Element Name must be recorded on the Test Data Sheet, so it
is clear exactly the sensing element that was tested. Paragraph (h) of
this AD has been revised to provide an exception to this requirement.
Request To Allow Alternative Installation of Placard
Endeavor Air requested that paragraphs (j)(1)(iii) and (j)(2)(iii)
of the proposed AD be revised to allow the placard on the BLEED AIR
control panel to be installed as specified in the FAA-approved operator
Minimum Equipment List (MEL) procedure, rather than just in accordance
with MHI RJ Service Bulletin 670BA-36-025, Revision C, dated May 25,
2022. Endeavor Air stated that its current MEL procedure for an
inoperative LOOP already requires installation of a placard on the
BLEED Air control panel, though the wording is not identical to that in
MHI RJ Service Bulletin 670BA-36-025, Revision C, dated May 25, 2022.
Endeavor Air stated that this change would help prevent worker
confusion and possible unnecessary work.
The FAA has reviewed Endeavor Air's MEL procedure and agrees that
it provides the same level of safety as that specified in MHI RJ
Service Bulletin 670BA-36-025, Revision C, dated May 25, 2022,
including Appendix A, Revision B, dated March 14, 2022, Appendix B,
dated October 21, 2021, and Appendix C, dated March 14, 2022. The FAA
has revised paragraphs (j)(1)(iii) and (j)(2)(iii) of this AD to allow
installing the placard in accordance with the referenced service
information or the operator's FAA-approved MEL procedure.
Request To Revise Labor Costs
MHI RJ requested to revise the labor costs in the cost of
compliance section from $85 to $79 per hour. MHI RJ stated that
settlement agreements signed with Liebherr and Kidde are for no more
than $79 per hour, and that operators will be reimbursed for parts and
labor costs by Kidde. Therefore, MH IRJ requested the labor cost be
based on $79 per hour.
The FAA acknowledges that labor costs may be higher or lower than
the standard rate of $85 per hour used when estimating the labor costs
for complying with AD requirements. However, as stated in this AD,
these costs are merely FAA estimates. Further, the FAA does not control
any settlement agreement or warranty coverage and cannot guarantee that
any given labor rate will be available to operators. This AD has not
been changed with respect to this request.
Conclusion
This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI
referenced above. The FAA reviewed the relevant data, considered the
comments received, and determined that air safety requires adopting
this AD as proposed. Accordingly, the FAA is issuing this AD to address
the unsafe condition on this product. Except for minor editorial
changes, and any other changes described previously, this AD is adopted
as proposed in the NPRM. None of the changes will increase the economic
burden on any operator.
[[Page 31156]]
Related Service Information Under 1 CFR Part 51
The FAA reviewed MHI RJ Service Bulletin 601R-36-021, Revision D,
dated May 25, 2022, including Appendix A, Revision B, dated March 14,
2022; and MHI RJ Service Bulletin 670BA-36-025, Revision C, dated May
25, 2022, including Appendix A, Revision B, dated March 14, 2022,
Appendix B, dated October 21, 2021, and Appendix C, dated March 14,
2022. This service information specifies procedures for testing
affected bleed air leak detection system sensing elements (i.e., those
marked with a date code before ``A2105'' (which corresponds to January
31, 2021), with a part number defined in this service information) to
determine if they are serviceable, and replacing failed sensing
elements with serviceable ones. This service information also allows
deferring the replacement of an affected part under certain conditions
and allows operating the airplane with certain deactivated defective
sensing elements. These documents are distinct since they apply to
different airplane models. 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.
Costs of Compliance
The FAA estimates that this AD affects 1,126 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Model Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Model CL[dash]600[dash]2B19 (526 29 work hours x $85 per $0 $2,465 $1,296,590
airplanes). hour = $2,465.
Model CL[dash]600[dash]2C10 and 82 work hours x $85 per 0 6,970 4,182,000
CL[dash]600[dash]2C11, hour = $6,970.
CL[dash]600[dash]2D15 and
CL[dash]600[dash]2D24, and
CL[dash]600[dash]2E25 (600 airplanes).
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of any
required actions. The FAA has no way of determining the number of
aircraft that might need these on-condition actions:
Estimated Costs of On-Condition Actions
----------------------------------------------------------------------------------------------------------------
Model/serial No.s (S/Ns) Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
CL[dash]600[dash]2B19, S/Ns 7002- Up to 26 work-hours x $85 Up to $113,200........ Up to $115,410.
7323. per hour = $2,210.
CL-600-2B19, S/Ns 7324-8113........ Up to 24 work-hours x $85 Up to $100,598........ Up to $102,638.
per hour = $2,040.
CL[dash]600[dash]2C10 and Up to 54 work-hours x $85 Up to $70,758......... Up to $75,348.
CL[dash]600[dash]2C11, S/Ns 10002- per hour = $4,590.
10347.
CL[dash]600[dash]2D15 and Up to 58 work-hours x $85 Up to $74,598......... Up to $79,528.
CL[dash]600[dash]2D24, S/Ns 15001- per hour = $4,930.
15494.
CL[dash]600[dash]2E25, S/Ns 19001- Up to 62 work-hours times; Up to $81,478......... Up to $86,748.
19064. $85 per hour = $5,270.
----------------------------------------------------------------------------------------------------------------
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
Regulatory Findings
This AD will not have federalism implications under Executive Order
13132. This AD will 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 that this AD:
(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 Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 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:
[[Page 31157]]
2023-07-07 MHI RJ Aviation ULC (Type Certificate Previously Held by
Bombardier, Inc.): Amendment 39-22409; Docket No. FAA-2022-1474;
Project Identifier MCAI-2022-00888-T.
(a) Effective Date
This airworthiness directive (AD) is effective June 20, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to MHI RJ Aviation ULC airplanes, certificated
in any category, and identified in paragraphs (c)(1) through (4) of
this AD.
(1) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes,
serial numbers 7002 through 7990 inclusive, and 8000 through 8113
inclusive.
(2) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) and
CL-600-2C11 (Regional Jet Series 550) airplanes, serial numbers
10002 through 10347 inclusive.
(3) Model CL-600-2D15 (Regional Jet Series 705) and Model CL-
600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001
through 15494 inclusive.
(4) Model CL-600-2E25 (Regional Jet Series 1000), serial numbers
19001 through 19064 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 36, Pneumatic.
(e) Unsafe Condition
This AD was prompted by reports that sensing elements of the
bleed air leak detection system were manufactured with insufficient
salt fill. The FAA is issuing this AD to address insufficient salt
fill, which can result in an inability to detect hot bleed air
leaks, which can cause damage to surrounding structures and systems
that can prevent continued safe flight and landing.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Definitions
For the purposes of this AD, the definitions specified in
paragraphs (g)(1) through (4) of this AD apply.
(1) Group 1 airplanes: The airplanes identified in paragraph
(c)(1) of this AD.
(2) Group 2 airplanes: The airplanes identified in paragraphs
(c)(2) through (4) of this AD.
(3) Affected part: A sensing element marked with a date code
before A2105 and having a part number as defined in Section 1,
Paragraph G(1), of MHI RJ Service Bulletin 601R-36-021, Revision D,
dated May 25, 2022, including Appendix A, Revision B, dated March
14, 2022, for Group 1 airplanes; and in Appendix B, dated October
21, 2021, of MHI RJ Service Bulletin 670BA-36-025, Revision C, dated
May 25, 2022, including Appendix A, Revision B, dated March 14,
2022, and Appendix C, dated March 14, 2022, for Group 2 airplanes;
unless the sensing element has been tested and found to be
serviceable in accordance with paragraphs (g)(3)(i) and (ii) or
paragraph (h) of this AD.
(i) Has been tested as specified in Section 3 of the
Accomplishment Instructions of Kidde Aerospace and Defense Service
Bulletin CFD-26-5 and found to be serviceable; and
(ii) Has been marked on one face of its connector hex nut and is
packaged as specified in Section 3.C. of the Accomplishment
Instructions--Identification Procedure of the Kidde Aerospace and
Defense Service Bulletin CFD-26-5.
(4) Serviceable part: A sensing element that is not an affected
part.
(h) Testing
Perform a test of the bleed air leak detection system sensing
elements to determine if they are serviceable, in accordance with
Section 2, Part A through Part F, of the Accomplishment Instructions
of MHI RJ Service Bulletin 601R-36-021, Revision D, dated May 25,
2022, including Appendix A, Revision B, dated March 14, 2022, for
Group 1 airplanes; and Section 2, Part A through Part M, of the
Accomplishment Instructions of MHI RJ Service Bulletin 670BA-36-025,
Revision C, dated May 25, 2022, including Appendix A, Revision B,
dated March 14, 2022, Appendix B, dated October 21, 2021, and
Appendix C, dated March 14, 2022, for Group 2 airplanes; within the
applicable compliance time indicated in figure 1 to paragraph (h) of
this AD. This AD does not require filling out the serial number or
date code of the sensing element in Appendix A, Revision B, dated
March 14, 2022; of MHI RJ Service Bulletin 601R-36-021, Revision D,
dated May 25, 2022; or MHI RJ Service Bulletin 670BA-36-025,
Revision C, dated May 25, 2022, including Appendix B, dated October
21, 2021, and Appendix C, dated March 14, 2022; as applicable, if
the serial number or date code is not visible without additional
disassembly and the part has not failed. However, the Sensing
Element Name must be recorded on the Test Data Sheet, so it is clear
exactly the sensing element that was tested.
Figure 1 to Paragraph (h)--Compliance Time
[[Page 31158]]
[GRAPHIC] [TIFF OMITTED] TR16MY23.001
(i) Replacement
(1) For Group 1 airplanes: If any sensing element is found not
serviceable during the tests required by paragraph (h) of this AD,
before further flight, replace the sensing element with a
serviceable part in accordance with Section 2, Part A through Part
F, as applicable, of the Accomplishment Instructions of MHI RJ
Service Bulletin 601R-36-021, Revision D, dated May 25, 2022,
including Appendix A, Revision B, dated March 14, 2022.
(2) For Group 2 airplanes: If any sensing element is found not
serviceable during the tests required by paragraph (h) of this AD,
before further flight, unless deferred in accordance with paragraph
(j) of this AD, replace the sensing element with a serviceable part
in accordance with Section 2, Part A through Part M, as applicable,
of the Accomplishment Instructions of MHI RJ Service Bulletin 670BA-
36-025, Revision C, dated May 25, 2022, including Appendix A,
Revision B, dated March 14, 2022, Appendix B, dated October 21,
2021, and Appendix C, dated March 14, 2022.
(j) Deferred Replacement for Group 2 Airplanes
The replacement of an affected part with a serviceable part for
Group 2 airplanes, as required by paragraph (i)(2) of this AD, may
be deferred up to a maximum of 10 days under the conditions
specified in paragraphs (j)(1) or (2) of this AD.
(1) A single bleed air leak detection loop (loop A or loop B)
sensing element for a given Part (Part A through Part M of the
Accomplishment Instructions of MHI RJ Service Bulletin 670BA-36-025,
Revision C, dated May 25, 2022, including Appendix A, Revision B,
dated March 14, 2022, Appendix B, dated October 21, 2021, and
Appendix C, dated March 14, 2022) is found not serviceable, provided
that the conditions specified in paragraphs (j)(1)(i) through (iv)
of this AD have been satisfied.
(i) The remaining operative bleed air leak detection loop (loop
A or loop B) sensing elements have been tested and found to be
serviceable in accordance with paragraph (h) of this AD.
(ii) The applicable maintenance procedures of Appendix C, dated
March 14, 2022, of MHI RJ Service Bulletin 670BA-36-025, Revision C,
dated May 25, 2022, including Appendix A, Revision B, dated March
14, 2022, and Appendix B, dated October 21, 2021, to deactivate the
defective sensing element are accomplished prior to operation of the
airplane with the defective sensing element inoperative.
(iii) A placard has been installed on the BLEED AIR control
panel in accordance with Section 2, Part A through Part M, as
applicable, of the Accomplishment Instructions of MHI RJ Service
Bulletin 670BA-36-025, Revision C, dated May 25, 2022, including
Appendix A, Revision B, dated March 14, 2022, Appendix B, dated
October 21, 2021, and Appendix C, dated March 14, 2022; or in
accordance with the operator's FAA-approved Minimum Equipment List
(MEL) procedure.
(iv) All flightcrew have been advised that the airplane is
dispatched with one out of two bleed air leak detection loops
inoperative.
(2) Both bleed air leak detection loop A and loop B sensing
elements for a given part (Part A through Part M of the
Accomplishment Instructions of MHI RJ Service Bulletin 670BA-36-025,
Revision C, dated May 25, 2022, including Appendix A, Revision B,
dated March 14, 2022, Appendix B, dated October 21, 2021, and
Appendix C, dated March 14, 2022) are found not
[[Page 31159]]
serviceable, provided that the conditions specified in paragraphs
(j)(2)(i) through (iv) of this AD have been satisfied.
(i) The applicable maintenance procedures of Appendix C, dated
March 14, 2022, of MHI RJ Service Bulletin 670BA-36-025, Revision C,
dated May 25, 2022, including Appendix A, Revision B, dated March
14, 2022, and Appendix B, dated October 21, 2021, to deactivate the
defective sensing elements are accomplished prior to operation of
the airplane with the defective sensing elements inoperative.
(ii) The applicable instructions and limitations of the
operator's existing FAA-approved Minimum Equipment List (MEL) item
36-21-06, sub-item 1, 2, or 3, as applicable, in accordance with
Section 2, Part A through Part M, of the Accomplishment Instructions
of MHI RJ Service Bulletin 670BA-36-025, Revision C, dated May 25,
2022, including Appendix A, Revision B, dated March 14, 2022,
Appendix B, dated October 21, 2021, and Appendix C, dated March 14,
2022, are accomplished prior to operation of the airplane with the
defective sensing elements inoperative.
(iii) A placard has been installed on the BLEED AIR control
panel in accordance with Section 2, Part A through Part M, as
applicable, of the Accomplishment Instructions of MHI RJ Service
Bulletin 670BA-36-025, Revision C, dated May 25, 2022, including
Appendix A, Revision B, dated March 14, 2022, Appendix B, dated
October 21, 2021, and Appendix C, dated March 14, 2022; or in
accordance with the operator's FAA-approved MEL procedure.
(iv) All flightcrew have been advised that the airplane is
dispatched with both bleed air leak detection loops inoperative.
(k) Parts Installation Prohibition
As of the effective date of this AD, no person may install an
affected part on any airplane.
(l) Credit for Previous Actions
This paragraph provides credit for actions required by
paragraphs (h), (i), and (j) of this AD, if those actions were
performed before the effective date of this AD using the service
information specified in paragraphs (l)(1) and (2) of this AD. For
performing the actions specified in the service information for the
Group 1 airplanes: If the sensing element was found not serviceable,
replacement is required before further flight; deferred replacement
of an affected part is prohibited. For performing the actions
specified in the service information for the Group 2 airplanes: If
the sensing element was found not serviceable, deferred replacement
of the affected part is acceptable, as specified in paragraph (j) of
this AD.
(1) For Group 1 airplanes the applicable service information
specified in paragraphs (l)(1)(i) through (iv) of this AD:
(i) MHI RJ Service Bulletin 601R-36-021, including Appendix A,
dated July 5, 2021.
(ii) MHI RJ Service Bulletin 601R-36-021, including Appendix A,
Revision A, dated October 21, 2021.
(iii) MHI RJ Service Bulletin 601R-36-021, Revision B, dated
December 2, 2021, including Appendix A, Revision A, dated October
21, 2021.
(iv) MHI RJ Service Bulletin 601R-36-021, Revision C, dated
March 14, 2022, including Appendix A, Revision B, dated March 14,
2022.
(2) For Group 2 airplanes the applicable service information
specified in paragraphs (l)(2)(i) through (iii) of this AD:
(i) MHI RJ Service Bulletin 670BA-36-025, including Appendix A,
dated July 5, 2021.
(ii) MHI RJ Service Bulletin 670BA-36-025, Revision A, dated
October 21, 2021, including Appendix A, Revision A, dated October
21, 2021, and Appendix B, dated October 21, 2021.
(iii) MHI RJ Service Bulletin 670BA-36-025, Revision B, dated
March 14, 2022, including Appendix A, Revision B, dated March 14,
2022, Appendix B, dated October 21, 2021, and Appendix C, dated
March 14, 2022.
(m) Additional AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York ACO Branch, FAA, has the authority to approve AMOCs for this
AD, if requested using the procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your request to your principal
inspector or responsible Flight Standards Office, as appropriate. If
sending information directly to the manager of the New York ACO
Branch, mail it to ATTN: Program Manager, Continuing Operational
Safety, at the address identified in paragraph (n)(2) of this AD or
email to: <a href="/cdn-cgi/l/email-protection#4e77632f383d6320372f2d21632d213d0e282f2f60292138"><span class="__cf_email__" data-cfemail="231a0e4255500e4d5a42404c0e404c50634542420d444c55">[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, New York ACO
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.
(n) Additional Information
(1) Refer to Transport Canada AD CF-2022-16R1, dated July 5,
2022, 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-2022-1474.
(2) For more information about this AD, contact Thomas Niczky,
Aerospace Engineer, Avionics & Electrical Systems Section, FAA, New
York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7347; email <a href="/cdn-cgi/l/email-protection#5d64703c2b2e7033243c3e32703e322e1d3b3c3c733a322b"><span class="__cf_email__" data-cfemail="dfe6f2bea9acf2b1a6bebcb0f2bcb0ac9fb9bebef1b8b0a9">[email protected]</span></a>.
(o) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference 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 Service Bulletin 601R-36-021, Revision D, dated May
25, 2022, including Appendix A, Revision B, dated March 14, 2022.
(ii) MHI RJ Service Bulletin 670BA-36-025, Revision C, dated May
25, 2022, including Appendix A, Revision B, dated March 14, 2022,
Appendix B, dated October 21, 2021, and Appendix C, dated March 14,
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#95e1fdf1bbf6e7ffd5a9f4b5fde7f0f3a8" 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#85e3f7abecebf6f5e0e6f1eceaebc5ebe4f7e4abe2eaf3"><span class="__cf_email__" data-cfemail="1274603c7b7c61627771667b7d7c527c7360733c757d64">[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 April 8, 2023.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-10334 Filed 5-15-23; 8:45 am]
BILLING CODE 4910-13-P
</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>Indexed from Federal Register on May 16, 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.