Airworthiness Directives; Pratt & Whitney Canada Corp. Engines, 18350-18353 [2024-05238]
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Federal Register / Vol. 89, No. 50 / Wednesday, March 13, 2024 / Rules and Regulations
maintenance program containing the tasks on
the basis of which the scheduled
maintenance is conducted to ensure the
continuing airworthiness of each operated
airplane.’’
(2) Where EASA AD 2023–0020 specifies
the ALS as ‘‘The Airworthiness Limitations
Section of the GEAC Engine Maintenance
Manual (EMM) No. 0982309 Revision 21,’’
replace that text with ‘‘The Airworthiness
Limitations Section of the GEAC Engine
Maintenance Manual (EMM) No. 0982309
Revision 22.’’ The ALS in Revision 22 of the
EMM is unchanged from Revision 21.
(3) Where EASA AD 2023–0020 refers to its
effective date, this AD requires using the
effective date of this AD.
(4) Where paragraph (3) of EASA AD 2023–
0020 specifies ‘‘Within 12 months after the
effective date of this AD, revise the approved
AMP,’’ replace that text with ‘‘Within 90
days after the effective date of this AD, revise
the ALS of the existing approved engine
maintenance or inspection program, as
applicable.’’
(5) This AD does not require compliance
with paragraphs (1), (2), (4), and (5) of EASA
AD 2023–0020.
(6) This AD does not adopt the Remarks
paragraph of EASA AD 2023–0020.
(i) Provisions for Alternative Actions and
Intervals
After performing the actions required by
paragraph (g) of this AD, no alternative
actions and associated thresholds and
intervals, including life limits, are allowed
unless they are approved as specified in the
provisions of the ‘‘Ref. Publications’’ section
of EASA AD 2023–0020.
(j) Terminating Action for Certain Actions
Required by Affected ADs
(1) Accomplishing the actions required by
paragraph (g) of this AD terminates the
requirements of paragraphs (g)(1) through (3)
of AD 2021–13–07 for model M601D–11,
M601E–11, M601E–11A, M601E–11AS,
M601E–11S, and M601F engines only.
(2) Accomplishing the actions required by
paragraph (g) of this AD terminates the
requirements of paragraphs (g)(1) through (3)
of AD 2023–01–10 for model M601E–11,
M601E–11A, M601E–11AS, M601E–11S, and
M601F engines only.
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(k) Alternative Methods of Compliance
(AMOCs)
(1) 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 manager of the International Validation
Branch, send it to the attention of the person
identified in paragraph (l) of this AD and
email to ANE-AD-AMOC@faa.gov.
(2) 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.
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(l) Additional Information
For more information about this AD,
contact Barbara Caufield, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; phone: (781) 238–
7146; email: barbara.caufield@faa.gov.
(m) 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
(EASA) AD 2023–0020, dated January 23,
2023.
(ii) [Reserved]
(3) For EASA AD 2023–0020, 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 FAA, Airworthiness Products Section,
Operational Safety Branch, 1200 District
Avenue, Burlington, MA 01803. 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 February 7, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness
Division,Aircraft Certification Service.
[FR Doc. 2024–05247 Filed 3–12–24; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2024–0458; Project
Identifier MCAI–2024–00116–E; Amendment
39–22694; AD 2024–04–51]
RIN 2120–AA64
Airworthiness Directives; Pratt &
Whitney Canada Corp. Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for all Pratt
& Whitney Canada Corp. (P&WC) Model
PT6A–64, PT6A–66, PT6A–66A, PT6A–
66B, PT6A–66D, PT6A–67, PT6A–67A,
PT6A–67AF, PT6A–67AG, PT6A–67B,
PT6A–67D, PT6A–67F, PT6A–67P,
SUMMARY:
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PT6A–67R, PT6A–67RM, PT6A–67T,
PT6A–68, PT6A–68D, PT6E–67XP, and
PT6E–66XT engines. The FAA
previously sent this AD as an emergency
AD to all known U.S. owners and
operators of these engines. This AD was
prompted by reports of second-stage
power turbine (PT2) blade failures. This
AD requires removal of affected PT2
blades prior to the next flight and
prohibits installation of affected PT2
blades, as specified in a Transport
Canada Emergency AD, which is
incorporated by reference. The FAA is
issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective March 28,
2024. Emergency AD 2024–04–51,
issued on February 16, 2024, which
contained the requirements of this
amendment, was effective with actual
notice.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication identified in this
AD as of March 28, 2024.
The FAA must receive comments on
this AD by April 29, 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–2024–0458; 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 street address for
Docket Operations is listed above.
Material Incorporated by Reference:
• For service information identified
in this final rule, contact Transport
Canada, Transport Canada National
Aircraft Certification, 159 Cleopatra
Drive, Nepean, Ontario K1A 0N5,
Canada; phone: (888) 663–3639; email:
TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca;
website: tc.canada.ca/en/aviation.
• You may view this material at the
FAA, Airworthiness Products Section,
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Federal Register / Vol. 89, No. 50 / Wednesday, March 13, 2024 / Rules and Regulations
Operational Safety Branch, 2200 South
216th Street, Des Moines, WA. For
information on the availability of this
material at the FAA, call (817) 222–
5110. It is also available at
regulations.gov under Docket No. FAA–
2024–0458.
FOR FURTHER INFORMATION CONTACT:
Barbara Caufield, Aviation Safety
Engineer, FAA, 2200 South 216th Street,
Des Moines, WA 98198; phone: (781)
238–7146; email: barbara.caufield@
faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written data, views, or arguments about
this final rule. Send your comments to
an address listed under ADDRESSES.
Include ‘‘Docket No. FAA–2024–0458;
Project Identifier MCAI–2024–00116–E’’
at the beginning of your comments. The
most helpful comments reference a
specific portion of the final rule, 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 this final rule 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 final rule.
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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 AD 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 AD,
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 AD. Submissions containing CBI
should be sent to Barbara Caufield,
Aviation Safety Engineer, FAA, 2200
South 216th Street, Des Moines, WA
98198. Any commentary that the FAA
receives which is not specifically
VerDate Sep<11>2014
15:51 Mar 12, 2024
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designated as CBI will be placed in the
public docket for this rulemaking.
Background
The FAA issued Emergency AD 2024–
04–51, dated February 16, 2024 (the
emergency AD), to address an unsafe
condition on P&WC Model PT6A–64,
PT6A–66, PT6A–66A, PT6A–66B,
PT6A–66D, PT6A–67, PT6A–67A,
PT6A–67AF, PT6A–67AG, PT6A–67B,
PT6A–67D, PT6A–67F, PT6A–67P,
PT6A–67R, PT6A–67RM, PT6A–67T,
PT6A–68, PT6A–68D, PT6E–67XP, and
PT6E–66XT engines. The FAA sent the
emergency AD to all known U.S. owners
and operators of these engines. The
emergency AD requires removal of
affected PT2 blades prior to the next
flight. The emergency AD also prohibits
installation of affected PT2 blades.
The emergency AD was prompted by
Transport Canada Emergency AD CF–
2024–05, dated February 15, 2024
(Transport Canada Emergency AD CF–
2024–05) (referred to after this as the
MCAI), issued by Transport Canada,
which is the aviation authority for
Canada, to correct an unsafe condition
on P&WC Model PT6A–64, PT6A–66,
PT6A–66A, PT6A–66B, PT6A–66D,
PT6A–66T, PT6A–67, PT6A–67A,
PT6A–67AF, PT6A–67AG, PT6A–67B,
PT6A–67D, PT6A–67F, PT6A–67P,
PT6A–67R, PT6A–67RM, PT6A–67T,
PT6A–68, PT6A–68B, PT6A–68C,
PT6A–68D, PT6A–68T, PT6E–67XP,
and PT6E–66XT engines. The MCAI
states that there has been a recent inservice report of a PT2 blade failure on
a model PT6A–67 engine and two
reports of PT2 blade failures during
testing at the manufacturer’s facility.
The PT2 blade failures were contained.
The manufacturer is investigating the
root cause of the PT2 blade failures, but
the preliminary investigation
determined that the affected power
turbine modules contained PT2 blades
with part number 3056693–01, which
were newly manufactured from the
same raw material. In all cases, the PT2
blades had accumulated less than 25
hours air time since new. Transport
Canada Emergency AD CF–2024–05
specifies removal of the suspect blades
prior to the next flight and prohibits
installation of the suspect blades.
Transport Canada Emergency AD CF–
2024–05 states that the corrective
actions are interim actions until the root
cause investigation is completed. This
condition, if not addressed, could result
in engine power loss or engine in-flight
shut down, resulting in consequent
emergency landing or reduced control of
the airplane. The FAA is issuing this AD
to address the unsafe condition on these
products.
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18351
You may examine the MCAI in the
AD docket at regulations.gov under
Docket No. FAA–2024–0458.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Transport Canada
Emergency AD CF–2024–05, which
requires replacing the affected PT2
blades. Transport Canada Emergency
AD CF–2024–05 also prohibits the
installation of the affected PT2 blades.
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
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 and service information
described above. The FAA is issuing
this AD after determining that the
unsafe condition described previously is
likely to exist or develop in other
products of the same type design.
AD Requirements
This AD requires accomplishing the
actions specified in the MCAI, except as
discussed under ‘‘Differences Between
this AD and the MCAI.’’
Differences Between This AD and the
MCAI
The MCAI applies to P&WC Model
PT6A–66T, PT6A–68B, PT6A–68C, and
PT6A–68T engines, but this emergency
AD does not as these engines are not
U.S. type-certificated.
Interim Action
The FAA considers that this AD is an
interim action. The manufacturer is
currently investigating the root cause of
the unsafe condition identified in this
AD. If final action is later identified, the
FAA might consider further rulemaking.
Justification for Immediate Adoption
and Determination of the Effective Date
Section 553(b)(3)(B) of the
Administrative Procedure Act (APA) (5
U.S.C. 551 et seq.) authorizes agencies
to dispense with notice and comment
procedures for rules when the agency,
for ‘‘good cause,’’ finds that those
procedures are ‘‘impracticable,
unnecessary, or contrary to the public
interest.’’ Under this section, an agency,
upon finding good cause, may issue a
final rule without providing notice and
seeking comment prior to issuance.
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Federal Register / Vol. 89, No. 50 / Wednesday, March 13, 2024 / Rules and Regulations
Further, section 553(d) of the APA
authorizes agencies to make rules
effective in less than thirty days, upon
a finding of good cause.
An unsafe condition exists that
required the immediate adoption of
Emergency AD 2024–04–51, issued on
February 16, 2024, to all known U.S.
owners and operators of these engines.
The FAA found that the risk to the
flying public justified waiving notice
and comment prior to adoption of this
rule because failure of the PT2 blade
could result in engine power loss or
engine in-flight shut down, and
consequent emergency landing or
reduced control of the airplane. Given
the significance of the risk presented by
this unsafe condition, it must be
immediately addressed. Thus, the FAA
has determined that the affected PT2
blades must be removed before further
flight. These conditions still exist,
therefore, notice and opportunity for
prior public comment are impracticable
and contrary to the public interest
pursuant to 5 U.S.C. 553(b)(3)(B).
In addition, the FAA finds that good
cause exists pursuant to 5 U.S.C. 553(d)
for making this amendment effective in
less than 30 days, for the same reasons
the FAA found good cause to forego
notice and comment.
Regulatory Flexibility Act
The requirements of the Regulatory
Flexibility Act (RFA) do not apply when
an agency finds good cause pursuant to
5 U.S.C. 553 to adopt a rule without
prior notice and comment. Because FAA
has determined that it has good cause to
adopt this rule without prior notice and
comment, RFA analysis is not required.
Costs of Compliance
The FAA estimates that this AD
affects 75 engines installed on aircraft of
U.S. registry. The FAA does not know
how many affected PT2 blades are
installed on each engine. This cost
estimate therefore reflects the cost of
replacing one affected PT2 blade per
engine. Replacing more than one
affected PT2 blade at the same time
would not incur additional labor costs.
The FAA estimates the following
costs to comply with this AD:
ESTIMATED COSTS
Labor cost
Replace PT2 blade ..........................
8 work-hours x $85 per hour = $680 ............................
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, 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
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Parts cost
(average
pro-rated cost)
Action
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
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$4,001
Cost per
product
$4,681
Cost on U.S.
operators
$351,075
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,
and
(2) Will not affect intrastate aviation
in Alaska.
operators. As a result of such actual notice,
the emergency AD was effective for those
owners and operators on the date it was
received. This AD contains the same
requirements as the emergency AD and, for
those who did not receive actual notice, is
effective on March 28, 2024.
List of Subjects in 14 CFR Part 39
(c) Applicability
This AD applies to Pratt & Whitney Canada
Corp. Model PT6A–64, PT6A–66, PT6A–66A,
PT6A–66B, PT6A–66D, PT6A–67, PT6A–
67A, PT6A–67AF, PT6A–67AG, PT6A–67B,
PT6A–67D, PT6A–67F, PT6A–67P, PT6A–
67R, PT6A–67RM, PT6A–67T, PT6A–68,
PT6A–68D, PT6E–67XP, and PT6E–66XT
engines.
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
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 adding
the following new airworthiness
directive:
■
(b) Affected ADs
None.
(d) Subject
Joint Aircraft System Component (JASC)
Code, 7250 Turbine Section.
(e) Unsafe Condition
This AD was prompted by reports from the
manufacturer of the failure of second-stage
power turbine (PT2) blades. The FAA is
issuing this AD to prevent the failure of PT2
blades. The unsafe condition, if not
addressed, could result in engine power loss
or engine in-flight shut down, resulting in
consequent emergency landing or reduced
control of the airplane.
2024–04–51 Pratt & Whitney Canada Corp.:
Amendment 39–22694; Docket No.
FAA–2024–0458; Project Identifier
MCAI–2024–00116–E.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(a) Effective Date
The FAA issued emergency Airworthiness
Directive (AD) 2024–04–51 on February 16,
2024, directly to affected owners and
(g) Required Actions
Except as specified in paragraph (h) of this
AD: Comply with all required actions and
compliance times specified in, and in
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Federal Register / Vol. 89, No. 50 / Wednesday, March 13, 2024 / Rules and Regulations
accordance with, Transport Canada
Emergency AD CF–2024–05, dated February
15, 2024 (Transport Canada Emergency AD
CF–2024–05).
the availability of this material at NARA,
visit: www.archives.gov/federal-register/cfr/
ibr-locations or email: fr.inspection@
nara.gov.
(h) Exceptions to Transport Canada
Emergency AD CF–2024–05
(1) Where Transport Canada Emergency
AD CF–2024–05 refers to its effective date,
this AD requires using the effective date of
this AD.
(2) Where Transport Canada Emergency
AD CF–2024–05 refers to hours air time, this
AD requires using flight hours.
(3) Where paragraph B of Transport Canada
Emergency AD CF–2024–05 specifies ‘‘After
the effective date of this AD,’’ replace that
text with ‘‘As of the effective date of this
AD.’’
Issued on February 29, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
(i) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, AIR–520 Continued
Operational Safety 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 AIR–520 Continued
Operational Safety Branch, send it to the
attention of the person identified in
paragraph (j) of this AD and email it to ANEAD-AMOC@faa.gov.
(2) 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.
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(j) Additional Information
For more information about this AD,
contact Barbara Caufield, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des
Moines, WA 98198; phone: (781) 238–7146;
email: barbara.caufield@faa.gov.
(k) 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) Transport Canada Emergency AD CF–
2024–05, dated February 15, 2024.
(ii) [Reserved]
(3) For Transport Canada Emergency AD
CF–2024–05, contact Transport Canada,
Transport Canada National Aircraft
Certification, 159 Cleopatra Drive, Nepean,
Ontario K1A 0N5, Canada; phone: (888) 663–
3639; email: TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca;
website: tc.canada.ca/en/aviation.
(4) You may view this service information
at FAA, Airworthiness Products Section,
Operational Safety Branch, 2200 South 216th
Street, Des Moines, WA. 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
VerDate Sep<11>2014
15:51 Mar 12, 2024
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[FR Doc. 2024–05238 Filed 3–8–24; 11:15 am]
BILLING CODE 4910–13–P
DEPARTMENT OF COMMERCE
Bureau of Industry and Security
15 CFR Parts 740, 770, and 774
[Docket No. 240221–0054]
RIN 0694–AJ38
Clarification of Controls on Radiation
Hardened Integrated Circuits and
Expansion of License Exception GOV
Bureau of Industry and
Security, Department of Commerce.
ACTION: Interim final rule.
AGENCY:
The Bureau of Industry and
Security (BIS) is amending the Export
Administration Regulations (EAR) to
clarify controls on radiation hardened
integrated circuits, including controls
on computer and telecommunications
equipment incorporating such radiation
hardened integrated circuits. This rule
also addresses certain scenarios that
apply to certain integrated circuits
acquired, tested, or otherwise used by or
for the United States Government and
affirms the availability of License
Exception GOV for such items when
pursuant to an official written request or
directive from the Department of
Defense or the Department of Energy.
Lastly, this rule expands the availability
of License Exception GOV for
microelectronics items being exported,
reexported, or transferred (in-country)
in furtherance of a contract between the
exporter, reexporter, or transferor and a
department or agency of the U.S.
Government when the contract provides
for the export, reexport, transfer (incountry) of the item by the exporter,
reexporter, or transferor in order to
remove export control obstacles for
official business of the U.S.
Government, including the Department
of Energy and the Department of
Defense.
SUMMARY:
DATES:
Effective date: This rule is effective
March 13, 2024.
Comments due date: Comments must
be received by BIS no later than April
12, 2024.
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18353
Comments on this rule may
be submitted to the Federal rulemaking
portal (www.regulations.gov). The
regulations.gov ID for this rule is: BIS–
2023–0038. Please refer to RIN 0694–
AJ38 in all comments.
All filers using the portal should use
the name of the person or entity
submitting the comments as the name of
their files, in accordance with the
instructions below. Anyone submitting
business confidential information
should clearly identify the business
confidential portion at the time of
submission, file a statement justifying
nondisclosure and referring to the
specific legal authority claimed, and
provide a non-confidential version of
the submission.
For comments submitted
electronically containing business
confidential information, the file name
of the business confidential version
should begin with the characters ‘‘BC.’’
Any page containing business
confidential information must be clearly
marked ‘‘BUSINESS CONFIDENTIAL’’
on the top of that page. The
corresponding non-confidential version
of those comments must be clearly
marked ‘‘PUBLIC.’’ The file name of the
non-confidential version should begin
with the character ‘‘P.’’ Any
submissions with file names that do not
begin with either a ‘‘BC’’ or a ‘‘P’’ will
be assumed to be public and will be
made publicly available through https://
www.regulations.gov. Commenters
submitting business confidential
information are encouraged to scan a
hard copy of the non-confidential
version to create an image of the file,
rather than submitting a digital copy
with redactions applied, to avoid
inadvertent redaction errors which
could enable the public to read business
confidential information.
FOR FURTHER INFORMATION CONTACT:
Brian Baker, Office of National Security
and Technology Transfer Controls,
Bureau of Industry and Security, Phone:
(202) 482–9135; Email: Brian.Baker@
bis.doc.gov.
SUPPLEMENTARY INFORMATION:
ADDRESSES:
Background
Department of Defense (DOD)
Leadership established the Strategic
Radiation Hardened Electronics Council
(SRHEC) in September, 2018 with the
goal of to ensuring continued access to
Strategic Radiation Hardened (SRH) and
Radiation Hardened (RH) electronics
and the long-term viability of the
domestic infrastructure that are critical
to the Nation’s security and defense. In
support of that effort, the Bureau of
Industry and Security (BIS) is amending
E:\FR\FM\13MRR1.SGM
13MRR1
]]>Agencies
[Federal Register Volume 89, Number 50 (Wednesday, March 13, 2024)]
[Rules and Regulations]
[Pages 18350-18353]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-05238]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-0458; Project Identifier MCAI-2024-00116-E;
Amendment 39-22694; AD 2024-04-51]
RIN 2120-AA64
Airworthiness Directives; Pratt & Whitney Canada Corp. Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
-----------------------------------------------------------------------
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
Pratt & Whitney Canada Corp. (P&WC) Model PT6A-64, PT6A-66, PT6A-66A,
PT6A-66B, PT6A-66D, PT6A-67, PT6A-67A, PT6A-67AF, PT6A-67AG, PT6A-67B,
PT6A-67D, PT6A-67F, PT6A-67P, PT6A-67R, PT6A-67RM, PT6A-67T, PT6A-68,
PT6A-68D, PT6E-67XP, and PT6E-66XT engines. The FAA previously sent
this AD as an emergency AD to all known U.S. owners and operators of
these engines. This AD was prompted by reports of second-stage power
turbine (PT2) blade failures. This AD requires removal of affected PT2
blades prior to the next flight and prohibits installation of affected
PT2 blades, as specified in a Transport Canada Emergency AD, which is
incorporated by reference. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective March 28, 2024. Emergency AD 2024-04-51,
issued on February 16, 2024, which contained the requirements of this
amendment, was effective with actual notice.
The Director of the Federal Register approved the incorporation by
reference of a certain publication identified in this AD as of March
28, 2024.
The FAA must receive comments on this AD by April 29, 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-2024-0458; 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
street address for Docket Operations is listed above.
Material Incorporated by Reference:
For service information identified in this final rule,
contact Transport Canada, Transport Canada National Aircraft
Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada;
phone: (888) 663-3639; email: [email protected]; website: tc.canada.ca/en/aviation.
You may view this material at the FAA, Airworthiness
Products Section,
[[Page 18351]]
Operational Safety Branch, 2200 South 216th Street, Des Moines, WA. For
information on the availability of this material at the FAA, call (817)
222-5110. It is also available at regulations.gov under Docket No. FAA-
2024-0458.
FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone:
(781) 238-7146; email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written data, views, or arguments
about this final rule. Send your comments to an address listed under
ADDRESSES. Include ``Docket No. FAA-2024-0458; Project Identifier MCAI-
2024-00116-E'' at the beginning of your comments. The most helpful
comments reference a specific portion of the final rule, 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
this final rule 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 final rule.
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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Barbara
Caufield, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des
Moines, WA 98198. 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 Emergency AD 2024-04-51, dated February 16, 2024
(the emergency AD), to address an unsafe condition on P&WC Model PT6A-
64, PT6A-66, PT6A-66A, PT6A-66B, PT6A-66D, PT6A-67, PT6A-67A, PT6A-
67AF, PT6A-67AG, PT6A-67B, PT6A-67D, PT6A-67F, PT6A-67P, PT6A-67R,
PT6A-67RM, PT6A-67T, PT6A-68, PT6A-68D, PT6E-67XP, and PT6E-66XT
engines. The FAA sent the emergency AD to all known U.S. owners and
operators of these engines. The emergency AD requires removal of
affected PT2 blades prior to the next flight. The emergency AD also
prohibits installation of affected PT2 blades.
The emergency AD was prompted by Transport Canada Emergency AD CF-
2024-05, dated February 15, 2024 (Transport Canada Emergency AD CF-
2024-05) (referred to after this as the MCAI), issued by Transport
Canada, which is the aviation authority for Canada, to correct an
unsafe condition on P&WC Model PT6A-64, PT6A-66, PT6A-66A, PT6A-66B,
PT6A-66D, PT6A-66T, PT6A-67, PT6A-67A, PT6A-67AF, PT6A-67AG, PT6A-67B,
PT6A-67D, PT6A-67F, PT6A-67P, PT6A-67R, PT6A-67RM, PT6A-67T, PT6A-68,
PT6A-68B, PT6A-68C, PT6A-68D, PT6A-68T, PT6E-67XP, and PT6E-66XT
engines. The MCAI states that there has been a recent in-service report
of a PT2 blade failure on a model PT6A-67 engine and two reports of PT2
blade failures during testing at the manufacturer's facility. The PT2
blade failures were contained. The manufacturer is investigating the
root cause of the PT2 blade failures, but the preliminary investigation
determined that the affected power turbine modules contained PT2 blades
with part number 3056693-01, which were newly manufactured from the
same raw material. In all cases, the PT2 blades had accumulated less
than 25 hours air time since new. Transport Canada Emergency AD CF-
2024-05 specifies removal of the suspect blades prior to the next
flight and prohibits installation of the suspect blades. Transport
Canada Emergency AD CF-2024-05 states that the corrective actions are
interim actions until the root cause investigation is completed. This
condition, if not addressed, could result in engine power loss or
engine in-flight shut down, resulting in consequent emergency landing
or reduced control of the airplane. The FAA is issuing this AD to
address the unsafe condition on these products.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2024-0458.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Transport Canada Emergency AD CF-2024-05, which
requires replacing the affected PT2 blades. Transport Canada Emergency
AD CF-2024-05 also prohibits the installation of the affected PT2
blades. 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
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 and
service information described above. The FAA is issuing this AD after
determining that the unsafe condition described previously is likely to
exist or develop in other products of the same type design.
AD Requirements
This AD requires accomplishing the actions specified in the MCAI,
except as discussed under ``Differences Between this AD and the MCAI.''
Differences Between This AD and the MCAI
The MCAI applies to P&WC Model PT6A-66T, PT6A-68B, PT6A-68C, and
PT6A-68T engines, but this emergency AD does not as these engines are
not U.S. type-certificated.
Interim Action
The FAA considers that this AD is an interim action. The
manufacturer is currently investigating the root cause of the unsafe
condition identified in this AD. If final action is later identified,
the FAA might consider further rulemaking.
Justification for Immediate Adoption and Determination of the Effective
Date
Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5
U.S.C. 551 et seq.) authorizes agencies to dispense with notice and
comment procedures for rules when the agency, for ``good cause,'' finds
that those procedures are ``impracticable, unnecessary, or contrary to
the public interest.'' Under this section, an agency, upon finding good
cause, may issue a final rule without providing notice and seeking
comment prior to issuance.
[[Page 18352]]
Further, section 553(d) of the APA authorizes agencies to make rules
effective in less than thirty days, upon a finding of good cause.
An unsafe condition exists that required the immediate adoption of
Emergency AD 2024-04-51, issued on February 16, 2024, to all known U.S.
owners and operators of these engines. The FAA found that the risk to
the flying public justified waiving notice and comment prior to
adoption of this rule because failure of the PT2 blade could result in
engine power loss or engine in-flight shut down, and consequent
emergency landing or reduced control of the airplane. Given the
significance of the risk presented by this unsafe condition, it must be
immediately addressed. Thus, the FAA has determined that the affected
PT2 blades must be removed before further flight. These conditions
still exist, therefore, notice and opportunity for prior public comment
are impracticable and contrary to the public interest pursuant to 5
U.S.C. 553(b)(3)(B).
In addition, the FAA finds that good cause exists pursuant to 5
U.S.C. 553(d) for making this amendment effective in less than 30 days,
for the same reasons the FAA found good cause to forego notice and
comment.
Regulatory Flexibility Act
The requirements of the Regulatory Flexibility Act (RFA) do not
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt
a rule without prior notice and comment. Because FAA has determined
that it has good cause to adopt this rule without prior notice and
comment, RFA analysis is not required.
Costs of Compliance
The FAA estimates that this AD affects 75 engines installed on
aircraft of U.S. registry. The FAA does not know how many affected PT2
blades are installed on each engine. This cost estimate therefore
reflects the cost of replacing one affected PT2 blade per engine.
Replacing more than one affected PT2 blade at the same time would not
incur additional labor costs.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Parts cost
Action Labor cost (average pro- Cost per Cost on U.S.
rated cost) product operators
----------------------------------------------------------------------------------------------------------------
Replace PT2 blade..................... 8 work-hours x $85 per $4,001 $4,681 $351,075
hour = $680.
----------------------------------------------------------------------------------------------------------------
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, 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, and
(2) Will not affect intrastate aviation in Alaska.
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:
2024-04-51 Pratt & Whitney Canada Corp.: Amendment 39-22694; Docket
No. FAA-2024-0458; Project Identifier MCAI-2024-00116-E.
(a) Effective Date
The FAA issued emergency Airworthiness Directive (AD) 2024-04-51
on February 16, 2024, directly to affected owners and operators. As
a result of such actual notice, the emergency AD was effective for
those owners and operators on the date it was received. This AD
contains the same requirements as the emergency AD and, for those
who did not receive actual notice, is effective on March 28, 2024.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Pratt & Whitney Canada Corp. Model PT6A-64,
PT6A-66, PT6A-66A, PT6A-66B, PT6A-66D, PT6A-67, PT6A-67A, PT6A-67AF,
PT6A-67AG, PT6A-67B, PT6A-67D, PT6A-67F, PT6A-67P, PT6A-67R, PT6A-
67RM, PT6A-67T, PT6A-68, PT6A-68D, PT6E-67XP, and PT6E-66XT engines.
(d) Subject
Joint Aircraft System Component (JASC) Code, 7250 Turbine
Section.
(e) Unsafe Condition
This AD was prompted by reports from the manufacturer of the
failure of second-stage power turbine (PT2) blades. The FAA is
issuing this AD to prevent the failure of PT2 blades. The unsafe
condition, if not addressed, could result in engine power loss or
engine in-flight shut down, resulting in consequent emergency
landing or reduced control of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Except as specified in paragraph (h) of this AD: Comply with all
required actions and compliance times specified in, and in
[[Page 18353]]
accordance with, Transport Canada Emergency AD CF-2024-05, dated
February 15, 2024 (Transport Canada Emergency AD CF-2024-05).
(h) Exceptions to Transport Canada Emergency AD CF-2024-05
(1) Where Transport Canada Emergency AD CF-2024-05 refers to its
effective date, this AD requires using the effective date of this
AD.
(2) Where Transport Canada Emergency AD CF-2024-05 refers to
hours air time, this AD requires using flight hours.
(3) Where paragraph B of Transport Canada Emergency AD CF-2024-
05 specifies ``After the effective date of this AD,'' replace that
text with ``As of the effective date of this AD.''
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, AIR-520 Continued Operational Safety 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 AIR-520 Continued
Operational Safety Branch, send it to the attention of the person
identified in paragraph (j) of this AD and email it to [email protected].
(2) 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.
(j) Additional Information
For more information about this AD, contact Barbara Caufield,
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines,
WA 98198; phone: (781) 238-7146; email: [email protected].
(k) 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) Transport Canada Emergency AD CF-2024-05, dated February 15,
2024.
(ii) [Reserved]
(3) For Transport Canada Emergency AD CF-2024-05, contact
Transport Canada, Transport Canada National Aircraft Certification,
159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; phone: (888)
663-3639; email: [email protected]; website: tc.canada.ca/en/
aviation.
(4) You may view this service information at FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th
Street, Des Moines, WA. 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 February 29, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2024-05238 Filed 3-8-24; 11:15 am]
BILLING CODE 4910-13-P
