Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes, 7297-7299 [2024-02055]
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7297
Proposed Rules
Federal Register
Vol. 89, No. 23
Friday, February 2, 2024
This section of the FEDERAL REGISTER
contains notices to the public of the proposed
issuance of rules and regulations. The
purpose of these notices is to give interested
persons an opportunity to participate in the
rule making prior to the adoption of the final
rules.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2024–0045; Project
Identifier MCAI–2023–01088–A]
RIN 2120–AA64
Airworthiness Directives; Pilatus
Aircraft Ltd. Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to
supersede Airworthiness Directive (AD)
2023–12–17, which applies to Pilatus
Aircraft Ltd. (Pilatus) Model PC–12, PC–
12/45, PC–12/47, and PC–12/47E
airplanes. AD 2023–12–17 requires
revising the airworthiness limitation
section (ALS) of the existing aircraft
maintenance manual (AMM) or
Instructions for Continued
Airworthiness (ICA) for your airplane by
introducing new and more restrictive
instructions and maintenance tasks as
specified in the component limitations
section, which includes repetitive
inspections for cracks in the lower main
spar connection of the horizontal
stabilizer. Since the FAA issued AD
2023–12–17, the FAA has determined
that new or more restrictive
airworthiness limitations are necessary.
This proposed AD would require
revising the ALS of your existing AMM
or ICA and your existing approved
maintenance or inspection program, as
applicable, as specified in a European
Union Aviation Safety Agency (EASA)
AD, which is proposed for incorporation
by reference. The FAA is proposing this
AD to address the unsafe condition on
these products.
DATES: The FAA must receive comments
on this NPRM by March 18, 2024.
ADDRESSES: You may send comments,
using the procedures found in 14 CFR
11.43 and 11.45, by any of the following
methods:
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SUMMARY:
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• Federal eRulemaking Portal: Go to
regulations.gov. Follow the instructions
for submitting comments.
• Fax: (202) 493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2024–0045; 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:
• For EASA material identified in this
NPRM, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne,
Germany; phone: +49 221 8999 000;
email: ADs@easa.europa.eu; website:
easa.europa.eu. You may find this
material on the EASA website at
ad.easa.europa.eu.
• 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.
FOR FURTHER INFORMATION CONTACT:
Doug Rudolph, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; phone:
(816) 329–4059; email: doug.rudolph@
faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written relevant data, views, or
arguments about this proposal. Send
your comments to an address listed
under ADDRESSES. Include ‘‘Docket No.
FAA–2024–0045; Project Identifier
MCAI–2023–01088–A’’ 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
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Sfmt 4702
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
regulations.gov, 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 Doug Rudolph,
Aviation Safety Engineer, FAA, 1600
Stewart Avenue, Suite 410, Westbury,
NY 11590. Any commentary that the
FAA receives which is not specifically
designated as CBI will be placed in the
public docket for this rulemaking.
Background
The FAA issued AD 2023–12–17,
Amendment 39–22475 (88 FR 42604,
July 3, 2023) (AD 2023–12–17), for
Pilatus Model PC–12, PC–12/45, PC–12/
47, and PC–12/47E airplanes. AD 2023–
12–17 was prompted by MCAI
originated by EASA, which is the
Technical Agent for the Member States
of the European Union. EASA issued
AD 2022–0103, dated June 9, 2022
(EASA AD 2022–0103) to correct an
unsafe condition for Pilatus Model PC–
12, PC–12/45, PC–12/47, and PC–12/
47E airplanes identified as cracks in the
lower main spar connection of the
horizontal stabilizer and the failure of
certain parts.
AD 2023–12–17 requires
incorporating new revisions to the ALS
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Federal Register / Vol. 89, No. 23 / Friday, February 2, 2024 / Proposed Rules
of the existing AMM or ICA for your
airplane to establish new or more
restrictive airworthiness limitations that
include repetitive inspections for cracks
in the lower main spar connection of the
horizontal stabilizer. The FAA issued
AD 2023–12–17 to address cracks in the
lower main spar connection of the
horizontal stabilizer and failure of
certain parts, which could result in loss
of airplane control.
Actions Since AD 2023–12–17 Was
Issued
Since the FAA issued AD 2023–12–
17, EASA superseded EASA AD 2022–
0103 and issued EASA AD 2023–0184,
dated October 19, 2023 (EASA AD
2023–0184) (also referred to as the
MCAI) for all Pilatus Model PC–12, PC–
12/45, PC–12/47, and PC–12/47E
airplanes. The MCAI states that new or
more restrictive tasks and limitations
have been developed. These new or
more restrictive airworthiness
limitations include repetitive eddy
current inspections for cracks in the
main landing gear yoke fitting. The FAA
is issuing this AD to address failure of
certain parts, which could result in
asymmetric main landing gear failure
that could lead to loss of airplane
control during take-off, landing, and
taxiing operations Additionally, the
actions required to address the unsafe
condition in AD 2023–12–17 are
included in ‘‘the applicable ALS,’’ as
defined in EASA AD 2023–0184.
You may examine the MCAI in the
AD docket at regulations.gov under
Docket No. FAA–2024–0045.
Related Service Information Under 1
CFR Part 51
EASA AD 2023–0184 requires certain
actions and associated thresholds and
intervals, including life limits and
maintenance tasks. EASA AD 2023–
0184 also requires doing corrective
actions if any discrepancy (as defined in
‘‘the applicable ALS’’ as defined in
EASA AD 2023–0184) is found during
accomplishment of any task required by
paragraph (1) of EASA AD 2023–0184
and revising the aircraft maintenance
program (AMP) by incorporating the
limitations, tasks, and associated
thresholds and intervals described in
‘‘the applicable ALS’’ as defined in
EASA AD 2023–0184. This material 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
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 the State
of Design Authority, it has notified the
FAA of the unsafe condition described
in the MCAI described above. The FAA
is issuing this NPRM after determining
that the unsafe condition described
previously is likely to exist or develop
in other products of the same type
design.
Proposed AD Requirements in This
NPRM
This proposed AD would retain none
of the requirements of AD 2023–12–17.
This proposed AD would require
revising the ALS of the existing AMM
or ICA for your airplane as specified in
EASA AD 2023–0184, described
previously, except as discussed under
‘‘Differences Between this Proposed AD
and EASA AD 2023–0184.’’
Differences Between This Proposed AD
and EASA AD 2023–0184
Paragraph (1) of EASA AD 2023–0184
requires replacing each component
before exceeding the applicable life
limit and within the identified
thresholds and intervals accomplishing
all applicable maintenance tasks as
specified in the applicable ALS for that
airplane. Paragraph (2) of EASA AD
2023–0184 requires corrective actions in
accordance with the applicable Pilatus
maintenance documentation or
contacting Pilatus for approved
instructions and accomplishing those
instructions accordingly. Paragraph (4)
of EASA AD 2023–0184 provides credit
for performing actions in accordance
with previous revisions of the Pilatus
AMM. Paragraph (5) of EASA AD 2023–
0184 explains that after revision of the
AMP, it is not necessary to record
accomplishment of individual actions
for demonstration of AD compliance.
This proposed AD would not require
compliance with paragraphs (1), (2), (4),
and (5) of EASA AD 2023–0184.
Explanation of Required Compliance
Information
In the FAA’s ongoing efforts to
improve the efficiency of the AD
process, the FAA developed a process to
use some civil aviation authority (CAA)
ADs as the primary source of
information for compliance with
requirements for corresponding FAA
ADs. The FAA has been coordinating
this process with manufacturers and
CAAs. As a result, the FAA proposes to
incorporate EASA AD 2023–0184 by
reference in the FAA final rule. Service
information required by the EASA AD
for compliance will be available at
regulations.gov by searching for and
locating Docket No. FAA–2024–0045
after the FAA final rule is published.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 1,030
airplanes of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
ESTIMATED COSTS
Action
Labor cost
Revise the ALS ...............................................
1 work-hour × $85 per hour = $85 .................
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Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
the FAA Administrator. Subtitle VII,
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
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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.
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Fmt 4702
Sfmt 4702
Cost per
product
Parts cost
$0
$85
Cost on U.S.
operators
$87,550
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
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Federal Register / Vol. 89, No. 23 / Friday, February 2, 2024 / Proposed Rules
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 the 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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
2023–12–17, Amendment 39–22475 (88
FR 42604, July 3, 2023); and
■ b. Adding the following new AD:
■
■
Pilatus Aircraft Ltd.: Docket No. FAA–2024–
0045; Project Identifier MCAI–2023–
01088–A.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by March 18,
2024.
(b) Affected ADs
This AD replaces AD 2023–12–17,
Amendment 39–22475 (AD 2023–12–17).
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(c) Applicability
This AD applies to Pilatus Aircraft Ltd.
Model PC–12, PC–12/45, PC–12/47, and PC–
12/47E airplanes, all serial numbers,
certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC)
Code 3211, Main Landing Gear Attach
Section.
(e) Unsafe Condition
This AD was prompted by a revision to the
airworthiness limitations section (ALS) of the
existing aircraft maintenance manual (AMM)
introducing new and more restrictive
instructions and maintenance tasks as
VerDate Sep<11>2014
15:43 Feb 01, 2024
Jkt 262001
specified in the component limitations
section, which include repetitive eddy
current inspections for cracks in the main
landing gear yoke fitting, could result in an
unsafe condition. The FAA is issuing this AD
to address failure of certain parts, which
could result in asymmetric main landing gear
failure that could lead to loss of airplane
control during take-off, landing, and taxiing
operations.
(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 2023–
0184, dated October 19, 2023 (EASA AD
2023–0184).
(h) Exceptions to EASA AD 2023–0184
(1) Where EASA AD 2023–0184 refers to its
effective date, this AD requires using the
effective date of this AD.
(2) This AD does not adopt the
requirements specified in paragraphs (1), (2),
(4), and (5) of EASA AD 2023–0184.
(3) Where paragraph (3) of EASA AD 2023–
0184 specifies ‘‘Within 12 months after the
effective date of this AD, revise the AMP,’’
this AD requires replacing those words with
‘‘Within 30 days after the effective date of
this AD, revise the airworthiness limitations
section of your existing airplane maintenance
manual or instructions for continued
airworthiness and your existing approved
maintenance or inspection program, as
applicable.’’
(4) The initial compliance time for doing
the tasks specified in paragraph (3) of EASA
AD 2023–0184 is on or before the applicable
‘‘limitations’’ and ‘‘associated thresholds’’ as
incorporated by the requirements of
paragraph (3) of EASA AD 2023–0184 or
within 30 days after the effective date of this
AD, whichever occurs later.
(5) This AD does not adopt the ‘‘Remarks’’
section of EASA AD 2023–0184.
(i) Provisions for Alternative Actions and
Intervals
No alternative actions and associated
thresholds and intervals, including life
limits, are allowed for compliance with
paragraph (g) of this AD unless they are
approved as specified in the provisions of the
‘‘Ref. Publications’’ section of EASA AD
2023–0184.
(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 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your
request to your principal inspector or local
Flight Standards District Office, as
appropriate. If sending information directly
to the International Validation Branch, send
it to the attention of the person identified in
paragraph (k) of this AD or email to: 9-AVS-
PO 00000
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Fmt 4702
Sfmt 4702
7299
AIR-730-AMOC@faa.gov. 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/
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: doug.rudolph@faa.gov.
(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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency
(EASA) AD 2023–0184, dated October 19,
2023.
(ii) [Reserved]
(3) For EASA AD 2023–0184, contact
EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; phone: +49 221 8999 000;
email: ADs@easa.europa.eu; 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 material at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA,
visit www.archives.gov/federal-register/cfr/
ibr-locations or email fr.inspection@nara.gov.
Issued on January 29, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2024–02055 Filed 2–1–24; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2024–0219; Project
Identifier MCAI–2023–00764–T]
RIN 2120–AA64
Airworthiness Directives; MHI RJ
Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.)
Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
E:\FR\FM\02FEP1.SGM
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Agencies
[Federal Register Volume 89, Number 23 (Friday, February 2, 2024)]
[Proposed Rules]
[Pages 7297-7299]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-02055]
========================================================================
Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
========================================================================
Federal Register / Vol. 89, No. 23 / Friday, February 2, 2024 /
Proposed Rules
[[Page 7297]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-0045; Project Identifier MCAI-2023-01088-A]
RIN 2120-AA64
Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2023-12-17, which applies to Pilatus Aircraft Ltd. (Pilatus) Model PC-
12, PC-12/45, PC-12/47, and PC-12/47E airplanes. AD 2023-12-17 requires
revising the airworthiness limitation section (ALS) of the existing
aircraft maintenance manual (AMM) or Instructions for Continued
Airworthiness (ICA) for your airplane by introducing new and more
restrictive instructions and maintenance tasks as specified in the
component limitations section, which includes repetitive inspections
for cracks in the lower main spar connection of the horizontal
stabilizer. Since the FAA issued AD 2023-12-17, the FAA has determined
that new or more restrictive airworthiness limitations are necessary.
This proposed AD would require revising the ALS of your existing AMM or
ICA and your existing approved maintenance or inspection program, as
applicable, as specified in a European Union Aviation Safety Agency
(EASA) AD, which is proposed for incorporation by reference. The FAA is
proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this NPRM by March 18, 2024.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to regulations.gov. Follow
the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2024-0045; 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:
For EASA material identified in this NPRM, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: [email protected]; website: easa.europa.eu. You may find
this material on the EASA website at ad.easa.europa.eu.
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.
FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: (816) 329-4059; email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2024-0045; Project Identifier
MCAI-2023-01088-A'' 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
regulations.gov, 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 Doug
Rudolph, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590. Any commentary that the FAA receives which is not
specifically designated as CBI will be placed in the public docket for
this rulemaking.
Background
The FAA issued AD 2023-12-17, Amendment 39-22475 (88 FR 42604, July
3, 2023) (AD 2023-12-17), for Pilatus Model PC-12, PC-12/45, PC-12/47,
and PC-12/47E airplanes. AD 2023-12-17 was prompted by MCAI originated
by EASA, which is the Technical Agent for the Member States of the
European Union. EASA issued AD 2022-0103, dated June 9, 2022 (EASA AD
2022-0103) to correct an unsafe condition for Pilatus Model PC-12, PC-
12/45, PC-12/47, and PC-12/47E airplanes identified as cracks in the
lower main spar connection of the horizontal stabilizer and the failure
of certain parts.
AD 2023-12-17 requires incorporating new revisions to the ALS
[[Page 7298]]
of the existing AMM or ICA for your airplane to establish new or more
restrictive airworthiness limitations that include repetitive
inspections for cracks in the lower main spar connection of the
horizontal stabilizer. The FAA issued AD 2023-12-17 to address cracks
in the lower main spar connection of the horizontal stabilizer and
failure of certain parts, which could result in loss of airplane
control.
Actions Since AD 2023-12-17 Was Issued
Since the FAA issued AD 2023-12-17, EASA superseded EASA AD 2022-
0103 and issued EASA AD 2023-0184, dated October 19, 2023 (EASA AD
2023-0184) (also referred to as the MCAI) for all Pilatus Model PC-12,
PC-12/45, PC-12/47, and PC-12/47E airplanes. The MCAI states that new
or more restrictive tasks and limitations have been developed. These
new or more restrictive airworthiness limitations include repetitive
eddy current inspections for cracks in the main landing gear yoke
fitting. The FAA is issuing this AD to address failure of certain
parts, which could result in asymmetric main landing gear failure that
could lead to loss of airplane control during take-off, landing, and
taxiing operations Additionally, the actions required to address the
unsafe condition in AD 2023-12-17 are included in ``the applicable
ALS,'' as defined in EASA AD 2023-0184.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2024-0045.
Related Service Information Under 1 CFR Part 51
EASA AD 2023-0184 requires certain actions and associated
thresholds and intervals, including life limits and maintenance tasks.
EASA AD 2023-0184 also requires doing corrective actions if any
discrepancy (as defined in ``the applicable ALS'' as defined in EASA AD
2023-0184) is found during accomplishment of any task required by
paragraph (1) of EASA AD 2023-0184 and revising the aircraft
maintenance program (AMP) by incorporating the limitations, tasks, and
associated thresholds and intervals described in ``the applicable ALS''
as defined in EASA AD 2023-0184. This material 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
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 the State of Design
Authority, it has notified the FAA of the unsafe condition described in
the MCAI described above. The FAA is issuing this NPRM after
determining that the unsafe condition described previously is likely to
exist or develop in other products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would retain none of the requirements of AD 2023-
12-17. This proposed AD would require revising the ALS of the existing
AMM or ICA for your airplane as specified in EASA AD 2023-0184,
described previously, except as discussed under ``Differences Between
this Proposed AD and EASA AD 2023-0184.''
Differences Between This Proposed AD and EASA AD 2023-0184
Paragraph (1) of EASA AD 2023-0184 requires replacing each
component before exceeding the applicable life limit and within the
identified thresholds and intervals accomplishing all applicable
maintenance tasks as specified in the applicable ALS for that airplane.
Paragraph (2) of EASA AD 2023-0184 requires corrective actions in
accordance with the applicable Pilatus maintenance documentation or
contacting Pilatus for approved instructions and accomplishing those
instructions accordingly. Paragraph (4) of EASA AD 2023-0184 provides
credit for performing actions in accordance with previous revisions of
the Pilatus AMM. Paragraph (5) of EASA AD 2023-0184 explains that after
revision of the AMP, it is not necessary to record accomplishment of
individual actions for demonstration of AD compliance. This proposed AD
would not require compliance with paragraphs (1), (2), (4), and (5) of
EASA AD 2023-0184.
Explanation of Required Compliance Information
In the FAA's ongoing efforts to improve the efficiency of the AD
process, the FAA developed a process to use some civil aviation
authority (CAA) ADs as the primary source of information for compliance
with requirements for corresponding FAA ADs. The FAA has been
coordinating this process with manufacturers and CAAs. As a result, the
FAA proposes to incorporate EASA AD 2023-0184 by reference in the FAA
final rule. Service information required by the EASA AD for compliance
will be available at regulations.gov by searching for and locating
Docket No. FAA-2024-0045 after the FAA final rule is published.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 1,030 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
----------------------------------------------------------------------------------------------------------------
Revise the ALS........................ 1 work-hour x $85 per $0 $85 $87,550
hour = $85.
----------------------------------------------------------------------------------------------------------------
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
[[Page 7299]]
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 the 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:
0
a. Removing Airworthiness Directive 2023-12-17, Amendment 39-22475 (88
FR 42604, July 3, 2023); and
0
b. Adding the following new AD:
Pilatus Aircraft Ltd.: Docket No. FAA-2024-0045; Project Identifier
MCAI-2023-01088-A.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by March 18, 2024.
(b) Affected ADs
This AD replaces AD 2023-12-17, Amendment 39-22475 (AD 2023-12-
17).
(c) Applicability
This AD applies to Pilatus Aircraft Ltd. Model PC-12, PC-12/45,
PC-12/47, and PC-12/47E airplanes, all serial numbers, certificated
in any category.
(d) Subject
Joint Aircraft System Component (JASC) Code 3211, Main Landing
Gear Attach Section.
(e) Unsafe Condition
This AD was prompted by a revision to the airworthiness
limitations section (ALS) of the existing aircraft maintenance
manual (AMM) introducing new and more restrictive instructions and
maintenance tasks as specified in the component limitations section,
which include repetitive eddy current inspections for cracks in the
main landing gear yoke fitting, could result in an unsafe condition.
The FAA is issuing this AD to address failure of certain parts,
which could result in asymmetric main landing gear failure that
could lead to loss of airplane control during take-off, landing, and
taxiing operations.
(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
2023-0184, dated October 19, 2023 (EASA AD 2023-0184).
(h) Exceptions to EASA AD 2023-0184
(1) Where EASA AD 2023-0184 refers to its effective date, this
AD requires using the effective date of this AD.
(2) This AD does not adopt the requirements specified in
paragraphs (1), (2), (4), and (5) of EASA AD 2023-0184.
(3) Where paragraph (3) of EASA AD 2023-0184 specifies ``Within
12 months after the effective date of this AD, revise the AMP,''
this AD requires replacing those words with ``Within 30 days after
the effective date of this AD, revise the airworthiness limitations
section of your existing airplane maintenance manual or instructions
for continued airworthiness and your existing approved maintenance
or inspection program, as applicable.''
(4) The initial compliance time for doing the tasks specified in
paragraph (3) of EASA AD 2023-0184 is on or before the applicable
``limitations'' and ``associated thresholds'' as incorporated by the
requirements of paragraph (3) of EASA AD 2023-0184 or within 30 days
after the effective date of this AD, whichever occurs later.
(5) This AD does not adopt the ``Remarks'' section of EASA AD
2023-0184.
(i) Provisions for Alternative Actions and Intervals
No alternative actions and associated thresholds and intervals,
including life limits, are allowed for compliance with paragraph (g)
of this AD unless they are approved as specified in the provisions
of the ``Ref. Publications'' section of EASA AD 2023-0184.
(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 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or local Flight
Standards District Office, as appropriate. If sending information
directly to the International Validation Branch, send it to the
attention of the person identified in paragraph (k) of this AD or
email to: [email protected]. 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/
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:
[email protected].
(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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2023-0184,
dated October 19, 2023.
(ii) [Reserved]
(3) For EASA AD 2023-0184, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; phone: +49 221 8999 000; email:
[email protected]; 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 material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].
Issued on January 29, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2024-02055 Filed 2-1-24; 8:45 am]
BILLING CODE 4910-13-P