Rule2023-14010
Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
Primary source
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Published
July 3, 2023
Effective
August 7, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This AD was prompted by a report that an incorrect wiring arrangement was detected around the weather radar system. This AD requires modifying the weather radar redundant wiring, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference (IBR). 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 126 (Monday, July 3, 2023)</title>
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[Federal Register Volume 88, Number 126 (Monday, July 3, 2023)]
[Rules and Regulations]
[Pages 42600-42602]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-14010]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0926; Project Identifier MCAI-2022-01583-A;
Amendment 39-22462; AD 2023-12-04]
RIN 2120-AA64
Airworthiness Directives; Pilatus Aircraft Ltd. 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
certain Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This AD
was prompted by a report that an incorrect wiring arrangement was
detected around the weather radar system. This AD requires modifying
the weather radar redundant wiring, as specified in a European Union
Aviation Safety Agency (EASA) AD, which is incorporated by reference
(IBR). The FAA is issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective August 7, 2023.
The Director of the Federal Register approved the incorporation by
reference
[[Page 42601]]
of a certain publication listed in this AD as of August 7, 2023.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No.FAA-2023-0926; 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 EASA service information that is incorporated by
reference in this final rule, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; phone: +49 221 8999 000; email:
<a href="/cdn-cgi/l/email-protection#4405003704212537256a2131362b34256a2131"><span class="__cf_email__" data-cfemail="66272215260307150748031314091607480313">[email protected]</span></a>; website: easa.europa.eu. You may find this service
information on the EASA website at ad.easa.europa.eu.
<bullet> You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 901 Locust,
Kansas City, MO 64106. For information on the availability of this
material at the FAA, call (817) 222-5110. The EASA service information
is also available at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2023-0926.
FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: (816) 329-4059; email: <a href="/cdn-cgi/l/email-protection#62060d17054c1017060d0e120a220403034c050d14"><span class="__cf_email__" data-cfemail="13777c66743d6166777c7f637b537572723d747c65">[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 serial-numbered
Pilatus Model PC-24 airplanes. The NPRM published in the Federal
Register on April 14, 2023 (88 FR 22928). The NPRM was prompted by EASA
AD 2022-0249, dated December 14, 2022 (EASA AD 2022-0249) (referred to
after this as the MCAI). The MCAI states an occurrence was reported
where an incorrect wiring arrangement was detected around the weather
radar system on certain Pilatus Model PC-24 airplanes. In case of a
lightning strike, the functionalities related to the Advanced Graphic
Module (AGM) 1 and AGM2, the Dual Generic Input/Output (DGI0) 1 card in
the Modular Avionics Unit (MAU) 1 module of the Honeywell Advanced
Cockpit Environment (ACE) system, and the Attitude Heading Reference
System (AHRS) 2 could be affected. The MCAI specifies modification of
the weather radar redundant wiring.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-0926.
In the NPRM, the FAA proposed to require modifying the weather
radar redundant wiring. The FAA is issuing this AD to address an
incorrect wiring arrangement around the weather radar system. The
unsafe condition, if not addressed, could, in the case of a lightning
strike, lead to the partial loss of flight and navigation data
displayed to the pilot or pilots, possibly resulting in increased
flight crew workload and a consequent reduction of safety margins.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the costs.
Conclusion
These products have been approved by the aviation authority of
another country and are 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 and
determined that air safety requires adopting this AD as proposed.
Accordingly, the FAA is issuing this AD to address the unsafe condition
on these products. Except for minor editorial changes, this AD is
adopted as proposed in the NPRM.
Related Service Information Under 1 CFR Part 51
EASA AD 2022-0249 requires modification of the weather radar
redundant wiring.
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.
Costs of Compliance
The FAA estimates that this AD affects 12 airplanes of U.S.
registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Modification.......................... 16 work-hours x $85 per $5,000 $6,360 $76,320
hour = $1,360.
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The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some 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:
[[Page 42602]]
(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:
2023-12-04 Pilatus Aircraft Ltd.: Amendment 39-22462; Docket No.
FAA-2023-0926; Project Identifier MCAI-2022-01583-A.
(a) Effective Date
This airworthiness directive (AD) is effective August 7, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Pilatus Aircraft Ltd. Model PC-24 airplanes,
serial numbers 231 through 252 inclusive and serial numbers 254 and
255, certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC) Codes 3497, Navigation
System Wiring; and 3442, Weather Radar System.
(e) Unsafe Condition
This AD was prompted by a report that an incorrect wiring
arrangement was detected around the weather radar system. The FAA is
issuing this AD to address an incorrect wiring arrangement around
the weather radar system. The unsafe condition, if not addressed,
could, in the case of a lightning strike, lead to the partial loss
of flight and navigation data displayed to the pilot or pilots,
possibly resulting in increased flight crew workload and a
consequent reduction of safety margins.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Except as specified in paragraphs (h) and (i) of this AD: Comply
with all required actions and compliance times specified in, and in
accordance with, European Union Aviation Safety Agency (EASA) AD
2022-0249, dated December 14, 2022 (EASA AD 2022-0249).
(h) Exceptions to EASA AD 2022-0249
(1) Where EASA AD 2022-0249 requires compliance from its
effective date, this AD requires using the effective date of this
AD.
(2) Where the service information referenced in paragraph (1) of
EASA AD 2022-0249 specifies removing and discarding parts, this AD
requires removing those parts from service.
(3) This AD does not adopt the ``Remarks'' paragraph of EASA AD
2022-0249.
(i) No Reporting Requirement
Although the service information referenced in EASA AD 2022-0249
specifies to submit certain information to the manufacturer, this AD
does not include that requirement.
(j) 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 Sec. 39.19. In accordance with Sec. 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 International Validation Branch, mail
it to the address identified in paragraph (k) of this AD or email
to: <a href="/cdn-cgi/l/email-protection#2a13076b7c79076b6378071d191a076b6765696a4c4b4b044d455c"><span class="__cf_email__" data-cfemail="a59c88e4f3f688e4ecf78892969588e4e8eae6e5c3c4c48bc2cad3">[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 local flight standards district office/
certificate holding district office.
(k) Additional Information
For more information about this AD, contact Doug Rudolph,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; phone: (816) 329-4059; email:
<a href="/cdn-cgi/l/email-protection#debab1abb9f0acabbab1b2aeb69eb8bfbff0b9b1a8"><span class="__cf_email__" data-cfemail="02666d77652c7077666d6e726a426463632c656d74">[email protected]</span></a>.
(l) 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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency AD 2022-0249, dated
December 14, 2022.
(ii) [Reserved]
(3) For EASA AD 2022-0249, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; phone: +49 221 8999 000; email:
<a href="/cdn-cgi/l/email-protection#efaeab9caf8a8e9c8ec18a9a9d809f8ec18a9a"><span class="__cf_email__" data-cfemail="96d7d2e5d6f3f7e5f7b8f3e3e4f9e6f7b8f3e3">[email protected]</span></a>; website: easa.europa.eu. You may find this EASA
AD on the EASA website at ad.easa.europa.eu.
(4) You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 901
Locust, Kansas City, MO 64106. For information on the availability
of this material at the FAA, call (817) 222-5110.
(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#7d1b0f5314130e0d181e091412133d131c0f1c531a120b"><span class="__cf_email__" data-cfemail="0b6d79256265787b6e687f6264654b656a796a256c647d">[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 June 12, 2023.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023-14010 Filed 6-30-23; 8:45 am]
BILLING CODE 4910-13-P
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