Rule2023-05705
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
March 24, 2023
Effective
April 28, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes, Model CL-600-2C11 (Regional Jet Series 550) airplanes, Model CL-600-2D15 (Regional Jet Series 705) airplanes, Model CL-600- 2D24 (Regional Jet Series 900) airplanes, and Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by a determination that new and more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate two aircraft maintenance manual (AMM) tasks. 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 57 (Friday, March 24, 2023)</title>
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[Federal Register Volume 88, Number 57 (Friday, March 24, 2023)]
[Rules and Regulations]
[Pages 17682-17685]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-05705]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0679; Project Identifier MCAI-2021-01213-T;
Amendment 39-22392; AD 2023-06-06]
RIN 2120-AA64
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 &
702) airplanes, Model CL-600-2C11 (Regional Jet Series 550) airplanes,
Model CL-600-2D15 (Regional Jet Series 705) airplanes, Model CL-600-
2D24 (Regional Jet Series 900) airplanes, and Model CL-600-2E25
(Regional Jet Series 1000) airplanes. This AD was prompted by a
determination that new and more restrictive airworthiness limitations
are necessary. This AD requires revising the existing maintenance or
inspection program, as applicable, to incorporate two aircraft
maintenance manual (AMM) tasks. The FAA is issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective April 28, 2023.
ADDRESSES: AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a>
under Docket No. FAA-2022-0679; 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.
FOR FURTHER INFORMATION CONTACT: Chirayu A. Gupta, Aerospace Engineer,
Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#645d49051217490a1d05070b49070b17240205054a030b12"><span class="__cf_email__" data-cfemail="92abbff3e4e1bffcebf3f1fdbff1fde1d2f4f3f3bcf5fde4">[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 all MHI RJ Aviation ULC
Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes, Model
CL-600-2C11 (Regional Jet Series 550) airplanes, Model CL-600-2D15
(Regional Jet Series 705) airplanes, Model CL-600-2D24 (Regional Jet
Series 900) airplanes, and Model CL-600-2E25 (Regional Jet Series 1000)
airplanes. The NPRM published in the Federal Register on June 16, 2022
(87 FR 36269). The NPRM was prompted by AD CF-2021-38, dated November
5, 2021 (TCCA AD CF-2021-38), issued by Transport Canada, which is the
aviation authority for Canada. TCCA AD CF-2021-38 states that a report
was received of the emergency ram air valve part number GG670-95019-1
stuck in closed or partially open positions. An investigation revealed
that the emergency ram air valve is failing due to corrosion of
multiple sub-components, which causes an increase in the breakaway
torque that cannot be overcome by the valve actuator.
In the NPRM, the FAA proposed to require revising the existing
maintenance or inspection program, as applicable, to incorporate new or
more restrictive airworthiness limitations.
The FAA issued a supplemental notice of proposed rulemaking (SNPRM)
to amend 14 CFR part 39 by adding an AD that would apply to all MHI RJ
Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702)
airplanes, Model CL-600-2C11 (Regional Jet Series 550) airplanes, Model
CL-600-2D15 (Regional Jet Series 705) airplanes, Model CL-600-2D24
(Regional Jet Series 900) airplanes, and Model CL-600-2E25 (Regional
Jet Series 1000) airplanes. The SNPRM published in the Federal Register
on January 13, 2023 (88 FR 2279). The SNPRM was prompted by a
determination that the existing maintenance or inspection program, as
applicable, must be revised to incorporate two AMM tasks. In addition,
Transport Canada revised AD CF-2021-38, dated November 5, 2021, and
issued Transport Canada AD CF-2021-38R1, dated May 25, 2022 (TCCA AD
CF-2021-38R1). In the SNPRM, the FAA proposed to require revising the
existing maintenance or inspection program, as applicable, to
incorporate two AMM tasks. The FAA is issuing this AD to address in-
service reports of emergency ram air valve part number (P/N) GG670-
95019-1 stuck in closed or partially open positions, which, if not
[[Page 17683]]
corrected could result in a complete loss of outside air supply,
leading to an increase in flight deck and cabin temperatures and a
possible increased level of contaminated air (carbon monoxide, carbon
dioxide, or ozone).
You may examine TCCA AD CF-2021-38 and TCCA AD CF-2021-38R1 in the
AD docket at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2022-0679.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the SNPRM or on the determination
of the cost to the public.
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 TCCA AD
referenced above. The FAA reviewed the relevant data 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, this AD is adopted as proposed in
the SNPRM. None of the changes will increase the economic burden on any
operator.
Costs of Compliance
The FAA estimates that this AD affects 1,158 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
The FAA has determined that revising the maintenance or inspection
program takes an average of 90 work-hours per operator, although the
agency recognizes that this number may vary from operator to operator.
Since operators incorporate maintenance or inspection program changes
for their affected fleet(s), the FAA has determined that a per-operator
estimate is more accurate than a per-airplane estimate. Therefore, the
agency estimates the average total cost per operator to be $7,650 (90
work-hours x $85 per work-hour).
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
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:
2023-06-06 MHI RJ Aviation ULC (Type Certificate Previously Held by
Bombardier, Inc.): Amendment 39-22392; Docket No. FAA-2022-0679;
Project Identifier MCAI-2021-01213-T.
(a) Effective Date
This airworthiness directive (AD) is effective April 28, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to MHI RJ Aviation ULC airplanes, certificated
in any category, identified in paragraphs (c)(1) through (5) of this
AD.
(1) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702)
airplanes.
(2) Model CL-600-2C11 (Regional Jet Series 550) airplanes.
(3) Model CL-600-2D15 (Regional Jet Series 705) airplanes.
(4) Model CL-600-2D24 (Regional Jet Series 900) airplanes.
(5) Model CL-600-2E25 (Regional Jet Series 1000) airplanes.
(d) Subject
Air Transport Association (ATA) of America Code: 21, Air
conditioning.
(e) Reason
This AD was prompted by a determination that the existing
maintenance or inspection program, as applicable, must be revised to
incorporate two aircraft maintenance manual (AMM) tasks. The FAA is
issuing this AD to address in-service reports of emergency ram air
valve part number (P/N) GG670-95019-1 stuck in closed or partially
open positions, which, if not corrected could result in a complete
loss of outside air supply, leading to an increase in flight deck
and cabin temperatures and a possible increased level of
contaminated air (carbon monoxide, carbon dioxide, or ozone).
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Maintenance or Inspection Program Revision
(1) Within 90 days after the effective date of this AD, revise
the existing maintenance or inspection program, as applicable, to
incorporate the information specified in figure 1 to the
introductory text of paragraph (g)(1) of this AD. The initial
compliance time for doing the task is at the applicable time
specified in paragraph (g)(1)(i) or (ii) of this AD.
Figure 1 to the introductory text of paragraph (g)(1)--AMM Task for
the Ram-Air Valve
[[Page 17684]]
[GRAPHIC] [TIFF OMITTED] TR24MR23.000
(i) For airplanes that have accumulated less than 1,800 flight
hours since the last operational check of the ram air shutoff valve
was performed as specified in AMM Task 21-52-04-710-801-A01, and for
airplanes that have accumulated less than 1,800 flight hours from
the date of issuance of the original airworthiness certificate or
original export certificate of airworthiness: Within 90 days after
the effective date of this AD, or before accumulating 1,800 total
flight hours, whichever occurs later.
(ii) For airplanes that have accumulated 1,800 flight hours or
more since the last operational check of the ram air shutoff valve
was performed as specified in AMM Task 21-52-04-710-801-A01, and for
airplanes that have accumulated 1,800 flight hours or more since the
date of issuance of the original airworthiness certificate or
original export certificate of airworthiness and for which no
operational check of the valve has been performed: Within 90 days
after the effective date of this AD or before accumulating 3,000
total flight hours, whichever occurs later.
(2) Within 90 days after the effective date of this AD, revise
the existing maintenance or inspection program, as applicable, to
incorporate the information specified in figure 2 to the
introductory text of paragraph (g)(2) of this AD. The initial
compliance time for doing the task is at the applicable time
specified in paragraph (g)(2)(i) or (ii) of this AD.
Figure 2 to the introductory text of paragraph (g)(2)--AMM Task for
the Pack Discharge and Ram-Air Supply Ducts
[GRAPHIC] [TIFF OMITTED] TR24MR23.001
(i) For airplanes that have accumulated less than 17,600 flight
hours since the last detailed inspection of the pack discharge and
ram air supply ducts was performed as specified in AMM Task 21-51-
00-220-801-A01, and for airplanes that have accumulated less than
17,600 flight hours since the date of issuance of the original
airworthiness certificate or original export certificate of
airworthiness: Within 90 days after the effective date of this AD,
or before accumulating 17,600 total flight hours, whichever occurs
later.
(ii) For airplanes that have accumulated 17,600 flight hours or
more since the last detailed inspection of the pack discharge and
ram air supply ducts as specified in AMM Task 21-51-00-220-801-A01,
and for airplanes that have accumulated 17,600 flight hours or more
since the date of issuance of the original airworthiness certificate
or original export certificate of airworthiness, and for which no
detailed inspection of the pack discharge and ram air supply ducts
has been performed: Within 90 days after the effective date of this
AD.
(h) No Alternative Actions or Intervals
After the existing maintenance or inspection program has been
revised as required by paragraph (g) of this AD, no alternative
actions (e.g., inspections) or intervals, may be used unless the
actions and intervals are approved as an alternative method of
compliance (AMOC) in accordance with the procedures specified in
paragraph (i)(1) of this AD.
(i) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York ACO Branch, FAA, has the authority to approve AMOCs for this
AD, if requested using the
[[Page 17685]]
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or responsible Flight
Standards Office, as appropriate. If sending information directly to
the manager of the certification office, send it to ATTN: Program
Manager, Continuing Operational Safety, FAA, New York ACO Branch,
1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-
228-7300. Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or MHI RJ
Aviation ULC's TCCA Design Approval Organization (DAO). If approved
by the DAO, the approval must include the DAO-authorized signature.
(j) Additional Information
(1) Refer to Transport Canada AD CF-2021-38R1, dated May 25,
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-2022-0679.
(2) For more information about this AD, contact Chirayu A.
Gupta, Aerospace Engineer, Airframe and Propulsion Section, FAA, New
York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#4f76622e393c6221362e2c20622c203c0f292e2e61282039"><span class="__cf_email__" data-cfemail="043d29657277296a7d65676b29676b77446265652a636b72">[email protected]</span></a>.
(k) Material Incorporated by Reference
None.
Issued on March 15, 2023.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-05705 Filed 3-23-23; 8:45 am]
BILLING CODE 4910-13-P
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