Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines, 12685-12688 [2025-04445]
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Federal Register / Vol. 90, No. 52 / Wednesday, March 19, 2025 / Rules and Regulations
2025–06–02 The Boeing Company:
Amendment 39–22990; Docket No.
FAA–2023–2151; Project Identifier AD–
2023–00984–T.
(a) Effective Date
This airworthiness directive (AD) is
effective April 23, 2025.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all The Boeing
Company Model 777–200, –200LR, –300,
–300ER, and 777F series airplanes,
certificated in any category.
(d) Subject
Air Transport Association (ATA) of
America Code 57, Wings.
(e) Unsafe Condition
This AD was prompted by a report of a 5inch crack on the upper wing skin at wing
station (WSTA) 460 of the right wing. The
FAA is issuing this AD to address the
possibility of an undetected upper wing skin
crack. The unsafe condition, if not addressed,
could result in the inability of the primary
structural element to sustain limit load and
could adversely affect the structural integrity
of the airplane, resulting in loss of control of
the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
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(g) Required Actions
Except as specified by paragraph (h) of this
AD: At the applicable times specified in the
‘‘Compliance’’ paragraph of Boeing Alert
Requirements Bulletin 777–57A0125 RB,
dated July 25, 2023, do all applicable actions
identified in, and in accordance with, the
Accomplishment Instructions of Boeing Alert
Requirements Bulletin 777–57A0125 RB,
dated July 25, 2023.
Note 1 to paragraph (g): Guidance for
accomplishing the actions required by this
AD can be found in Boeing Alert Service
Bulletin 777–57A0125, dated July 25, 2023,
which is referred to in Boeing Alert
Requirements Bulletin 777–57A0125 RB,
dated July 25, 2023.
(h) Exceptions to Service Information
Specifications
(1) Where Boeing Alert Requirements
Bulletin 777–57A0125 RB, dated July 25,
2023, uses the phrase ‘‘the original issue date
of Requirements Bulletin 777–57A0125 RB,’’
this AD requires using the effective date of
this AD.
(2) Where Boeing Alert Requirements
Bulletin 777–57A0125 RB, dated July 25,
2023, specifies contacting Boeing for repair
instructions: This AD requires doing the
repair before further flight using a method
approved in accordance with the procedures
specified in paragraph (i) of this AD.
(3) Where note (a) of the tables in the
‘‘Compliance’’ paragraph and
Accomplishment Instructions of Boeing Alert
Requirements Bulletin 777–57A0125 RB,
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dated July 25, 2023, specifies that a ‘‘repair
for any crack found on the left wing is
terminating action to the repeat inspection on
the left wing only,’’ or that a ‘‘repair for any
crack found on the right wing is terminating
action to the repeat inspection on the right
wing only,’’ for this AD, performing a repair
for any crack in accordance with the
procedures specified in paragraph (i) of this
AD terminates the repetitive inspections
required by (g) of this AD at the repaired area
only.
(4) For Model 777–300 (Group 3) airplanes,
where Boeing Alert Requirements Bulletin
777–57A0125 RB, dated July 25, 2023,
specifies an ultrasonic (UT) inspection of the
upper wing skin common to fasteners 11 and
12, this AD requires an open hole high
frequency eddy current (HFEC) inspection of
fasteners 11 and 12 in accordance with
Figures 5 and 6 (for the left wing) or Figures
18 and 19 (for the right wing), as applicable.
(5) For Model 777–300ER (Group 4)
airplanes, where Boeing Alert Requirements
Bulletin 777–57A0125 RB, dated July 25,
2023, requires a UT inspection of the upper
wing skin common to fasteners 6 and 7, this
AD requires this AD requires an open hole
HFEC inspection of fasteners 6 and 7 in
accordance with Figures 30 and 34 (for the
left wing) or Figures 39 and 43 (for the right
wing), as applicable.
(6) For Model 777–200LR (Group 5)
airplanes, where Boeing Alert Requirements
Bulletin 777–57A0125 RB, dated July 25,
2023, requires a UT inspection of the upper
wing skin common to fasteners 6 and 7, this
AD requires an open hole HFEC inspection
of fasteners 6 and 7 in accordance with
Figures 30 and 34 (for the left wing) or
Figures 39 and 43 (for the right wing), as
applicable.
(7) For Model 777F (Group 6) airplanes,
where Boeing Alert Requirements Bulletin
777–57A0125 RB, dated July 25, 2023,
requires a UT inspection of the upper wing
skin common to fasteners 6 and 7, this AD
requires an open hole HFEC inspection of
fasteners 6 and 7 in accordance with Figures
30 and 34 (for the left wing) or Figures 39
and 43 (for the right wing), as applicable.
(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 certification office,
send it to the attention of the person
identified in paragraph (j)(1) of this AD.
Information may be emailed to: AMOC@
faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(3) An AMOC that provides an acceptable
level of safety may be used for any repair,
modification, or alteration required by this
AD if it is approved by The Boeing Company
Organization Designation Authorization
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12685
(ODA) that has been authorized by the
Manager, AIR–520, Continued Operational
Safety Branch, FAA, to make those findings.
To be approved, the repair method,
modification deviation, or alteration
deviation must meet the certification basis of
the airplane, and the approval must
specifically refer to this AD.
(j) Related Information
(1) For more information about this AD,
contact Luis Cortez-Muniz, Aviation Safety
Engineer, FAA, 2200 South 216th St., Des
Moines, WA 98198; phone: 206–231–3958;
email: Luis.A.Cortez-Muniz@faa.gov.
(2) Material identified in this AD that is not
incorporated by reference is available at the
address specified in paragraph (k)(3) this AD.
(k) 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) Boeing Alert Requirements Bulletin
777–57A0125 RB, dated July 25, 2023.
(ii) [Reserved]
(3) For Boeing material, contact Boeing
Commercial Airplanes, Attention:
Contractual & Data Services (C&DS), 2600
Westminster Blvd., MC 110–SK57, Seal
Beach, CA 90740–5600; telephone 562–797–
1717; website myboeingfleet.com.
(4) You may view this material at the FAA,
Airworthiness Products Section, Operational
Safety Branch, 2200 South 216th St., Des
Moines, WA. For information on the
availability of this material at the FAA, call
206–231–3195.
(5) You may view this 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/ibrlocations or email fr.inspection@nara.gov.
Issued on March 13, 2025.
Peter A. White,
Deputy Director, Integrated Certificate
Management Division, Aircraft Certification
Service.
[FR Doc. 2025–04440 Filed 3–18–25; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2024–2538; Project
Identifier MCAI–2023–01211–E; Amendment
39–22991; AD 2025–06–03]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
Deutschland Ltd & Co KG Engines
Federal Aviation
Administration (FAA), DOT.
AGENCY:
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19MRR1
12686
ACTION:
Federal Register / Vol. 90, No. 52 / Wednesday, March 19, 2025 / Rules and Regulations
Final rule.
The FAA is superseding
Airworthiness Directive (AD) 2022–24–
06 for certain Rolls-Royce Deutschland
Ltd & Co KG (RRD) Model BR700–
710A1–10, BR700–710A2–20, and
BR700–710C4–11 engines. AD 2022–24–
06 required initial and repetitive visual
inspections of certain low-pressure
compressor (LPC) rotor (fan) disks and
replacement of any LPC rotor (fan) disk
with cracks detected. AD 2022–24–06
also allows for modification of the
engine in accordance with RRD service
information as a terminating action to
these inspections. Since the FAA issued
AD 2022–24–06, the manufacturer
published updated service information
and revised the engine maintenance
manual (EMM) to provide instructions
for an improved ultrasonic inspection
method, which prompted this AD. This
AD requires initial and repetitive visual
inspections of certain LPC rotor (fan)
disks and replacement of any LPC rotor
(fan) disk with cracks detected and
would allow modification of the engine
as a terminating action to the
inspections, as specified in a European
Union Aviation Safety Agency (EASA)
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 April 23,
2025.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of April 23, 2025.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2024–2538; 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:
• For EASA material identified in this
AD, contact EASA, Konrad-AdenauerSUMMARY:
Ufer 3, 50668 Cologne, Germany; phone:
+49 221 8999 000; email: ADs@
easa.europa.eu. You may find this
material on the EASA website at
ad.easa.europa.eu.
• You may view this material at the
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. It is also available at
regulations.gov under Docket No. FAA–
2024–2538.
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:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2022–24–06,
Amendment 39–22246 (87 FR 73919,
December 2, 2022), (AD 2022–24–06).
AD 2022–24–06 applied to RRD Model
BR700–710A1–10, BR700–710A2–20,
and BR700–710C4–11 engines. AD
2022–24–06 required initial and
repetitive visual inspections of certain
LPC rotor (fan) disks and replacement of
any LPC rotor (fan) disk with cracks
detected. AD 2022–24–06 also allows
for modification of the engine in
accordance with RRD service
information as a terminating action to
these inspections. The FAA issued AD
2022–24–06 to prevent failure of the
LPC rotor fan or blade.
The NPRM published in the Federal
Register on November 26, 2024 (89 FR
93230). The NPRM was prompted by
EASA AD 2022–0110R1, dated
November 22, 2023 (EASA AD 2022–
0110R1) (also referred to as the MCAI),
issued by EASA, which is the Technical
Agent for the Member States of the
European Union. The MCAI states that
the manufacturer published updated
service information and revised the
EMM to provide instructions for an
improved ultrasonic inspection method
for certain LPC rotor (fan) disks.
In the NPRM, the FAA proposed to
retain all of the requirements of AD
2022–24–06. The NPRM proposed to
require initial and repetitive visual
inspections of certain LPC rotor (fan)
disks and replacement of any LPC rotor
(fan) disk with cracks detected and
would allow modification of the engine
as a terminating action to the
inspections, as specified in EASA AD
2022–0110R1.
Discussion of Final Airworthiness
Directive
Comments
The FAA received one comment from
an anonymous commenter that
supported the NPRM without change.
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, considered the comment received,
and determined that air safety requires
adopting the 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.
Material Incorporated by Reference
Under 1 CFR Part 51
The FAA reviewed EASA AD 2022–
0110R1, which specifies procedures for
initial and repetitive visual inspections
of certain LPC rotor (fan) disks, and
replacement of any LPC rotor (fan) disk
with cracks detected.
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 the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD
affects 586 engines installed on
airplanes of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
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ESTIMATED COSTS
Action
Labor cost
Inspect LPC compressor rotor (fan) disk ........
4 work-hours × $85 per hour = $340 .............
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Cost per
product
Parts cost
E:\FR\FM\19MRR1.SGM
$0
19MRR1
$340
Cost on U.S.
operators
$199,240
Federal Register / Vol. 90, No. 52 / Wednesday, March 19, 2025 / Rules and Regulations
The FAA estimates the following
costs to do any necessary replacements
that would be required based on the
results of the required inspection. The
agency has no way of determining the
12687
number of engines that might need these
replacements:
ON-CONDITION COSTS
Action
Labor cost
Replace LPC compressor rotor (fan) disk ....................
10 work-hours × $85 per hour = $850 .........................
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.
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Regulatory Findings
The FAA has determined that this AD
will not have federalism implications
under Executive Order 13132. This AD
will not have a substantial direct effect
on the States, on the relationship
between the national government and
the States, or on the distribution of
power and responsibilities among the
various levels of government.
For the reasons discussed above, I
certify that this AD:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Will not affect intrastate aviation
in Alaska, and
(3) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
The Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
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1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
AD 2022–24–06, Amendment 39–22246
(87 FR 73919, December 2, 2022); and
■ b. Adding the following new
airworthiness directive:
■
■
2025–06–03 Rolls-Royce Deutschland Ltd &
Co KG: Amendment 39–22991; Docket
No. FAA–2024–2538; Project Identifier
MCAI–2023–01211–E.
(a) Effective Date
This airworthiness directive (AD) is
effective April 23, 2025.
(b) Affected ADs
This AD replaces AD 2022–24–06,
Amendment 39–22246 (87 FR 73919,
December 2, 2022) (AD 2022–24–06).
(c) Applicability
This AD applies to Rolls-Royce
Deutschland Ltd & Co KG (RRD) Model
BR700–710A1–10, BR700–710A2–20, and
BR700–710C4–11 engines as identified in
European Union Aviation Safety Agency AD
2022–0110R1, dated November 22, 2023
(EASA AD 2022–0110R1).
(d) Subject
Joint Aircraft Service Component (JASC)
Code 7230, Turbine Engine Compressor
Section.
(e) Unsafe Condition
This AD was prompted by reports of cracks
on certain low-pressure compressor (LPC)
rotor (fan) disks. The FAA is issuing this AD
to prevent failure of the LPC rotor fan or
blade. The unsafe condition, if not addressed,
could result in high energy debris release,
damage to the airplane, and 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 paragraphs (h) and
(i) of this AD: Perform all required actions
within the compliance times specified in,
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$470,000
Cost per
product
$470,850
and in accordance with, EASA AD 2022–
0110R1.
PART 39—AIRWORTHINESS
DIRECTIVES
§ 39.13
Parts cost
(h) Exceptions to EASA AD 2022–0110R1
(1) Where EASA AD 2022–0110R1 requires
compliance from its effective date, this AD
requires using the effective date of this AD.
(2) Where EASA AD 2022–0110R1 requires
compliance from ‘‘29 June 2022 [the effective
date of the original issue of this AD],’’ this
AD requires replacing that text with ‘‘January
6, 2023 (the effective date of AD 2022–24–
06).’’
(3) This AD does not require compliance
with paragraph (7) of EASA AD 2022–
0110R1. The actions required by paragraph 7
of EASA AD 2022–0110R1 were included in
AD 2022–26–02, Amendment 39–22280 (87
FR 78846, December 23, 2022), and for this
AD may be used for informational purposes.
(4) This AD does not adopt the ‘‘Remarks’’
paragraph of EASA AD 2022–0110R1.
(i) No Reporting Requirement
Although the service information
referenced in EASA AD 2022–0110R1
specifies to submit certain information to the
manufacturer, this AD does not include that
requirement.
(j) 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 local Flight Standards District Office, as
appropriate. If sending information directly
to the manager of AIR–520 Continued
Operational Safety Branch, send it to the
attention of the person identified in
paragraph (k) of this AD and email to:
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.
(k) 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.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the material listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
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19MRR1
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Federal Register / Vol. 90, No. 52 / Wednesday, March 19, 2025 / Rules and Regulations
(2) You must use this material as
applicable to do the actions required by this
AD, unless the AD specifies otherwise.
(i) European Union Aviation Safety Agency
(EASA) AD 2022–0110R1, dated November
22, 2023.
(ii) [Reserved]
(3) For EASA material identified in this
AD, 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 material 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 March 11, 2025.
Peter A. White,
Deputy Director, Integrated Certificate
Management Division, Aircraft Certification
Service.
[FR Doc. 2025–04445 Filed 3–18–25; 8:45 am]
Table of Contents
BILLING CODE 4910–13–P
I. Proposed Action
II. Public Comments and EPA Responses
III. EPA Action
IV. Incorporation by Reference
V. Statutory and Executive Order Reviews
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
[EPA–R09–OAR–2024–0315; FRL–12098–
02–R9]
Air Plan Revisions; California; Feather
River Air Quality Management District
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
The Environmental Protection
Agency (EPA) is taking final action to
approve a revision to the Feather River
Air Quality Management District
(FRAQMD or ‘‘District’’) portion of the
California State Implementation Plan
(SIP). This revision concerns
recodification of certain rules to replace
historical Sutter County Air Pollution
Control District and Yuba County Air
Pollution Control District rules with the
corresponding FRAQMD rules. These
rules regulate pollutants under the
Clean Air Act (CAA or ‘‘Act’’).
DATES: This rule is effective April 18,
2025.
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SUMMARY:
The EPA has established a
docket for this action under Docket ID
No. EPA–R09–OAR–2024–0315. All
documents in the docket are listed on
the https://www.regulations.gov
ADDRESSES:
VerDate Sep<11>2014
15:54 Mar 18, 2025
website. Although listed in the index,
some information is not publicly
available, e.g., Confidential Business
Information (CBI) or other information
whose disclosure is restricted by statute.
Certain other material, such as
copyrighted material, is not placed on
the internet and will be publicly
available only in hard copy form.
Publicly available docket materials are
available through https://
www.regulations.gov, or please contact
the person identified in the FOR FURTHER
INFORMATION CONTACT section for
additional availability information. If
you need assistance in a language other
than English or if you are a person with
a disability who needs a reasonable
accommodation at no cost to you, please
contact the person identified in the FOR
FURTHER INFORMATION CONTACT section.
FOR FURTHER INFORMATION CONTACT: Mae
Wang, EPA Region IX, 75 Hawthorne
St., San Francisco, CA 94105; phone:
(415) 947–4137; email: wang.mae@
epa.gov.
SUPPLEMENTARY INFORMATION:
Throughout this document, ‘‘we,’’ ‘‘us’’
and ‘‘our’’ refer to the EPA.
Jkt 265001
I. Proposed Action
On September 5, 2024 (89 FR 72353),
the EPA proposed to approve the
submitted FRAQMD rules listed below
into the California SIP because they
represent recodifications of existing SIP
rules. These rules will supersede the
Sutter County Air Pollution Control
District (SCAPCD) and Yuba County Air
Pollution Control District (YCAPCD)
rules of the same corresponding
number. The EPA therefore also
proposed to approve the rescissions of
the corresponding SCAPCD and
YCAPCD rules because they mirror
recodified rules proposed for approval.
The rules were locally adopted by the
FRAQMD on August 12, 1991. They
were initially scheduled for adoption at
a June 1991 Board Meeting, but the
adoption was postponed to August
1991. The FRAQMD ultimately adopted
the rules in this section on August 12,
1991, but ‘‘6/91’’ remained as the
adoption date printed on the rules.
Additionally, a typographic error in
Rule 3.3 was corrected and adopted by
the FRAQMD on October 3, 2022,
without changing the official adoption
date of the rule. The rules submitted by
CARB on May 11, 2023, for inclusion in
the California SIP are:
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Rule 3.0, Visible Emissions
Rule 3.1, Exceptions to Rule 3.0 (excluding
paragraph D)
Rule 3.2, Particulate Matter Concentration
Rule 3.3, Dust and Fumes
Rule 3.4, Separation of Emissions
Rule 3.5, Combination of Emissions
Rule 3.6, Abrasive Blasting
Rule 3.7, Reduction of Animal Matter
Rule 3.10, Sulfur Oxides
Rule 3.13, Circumvention
Rule 9.6, Equipment Breakdown
We proposed to approve these rules
because they represent recodifications
of existing SIP rules. Our proposed
action contains more information on the
rules and our evaluation.
II. Public Comments and EPA
Responses
The EPA’s proposed action provided
a 30-day public comment period. During
this period, we received four comments,
one of which is a duplicate of a previous
submission. The three distinct
comments were from members of the
public. All the comment submissions
can be found in the docket for this
rulemaking.
Comment 1: One commenter
acknowledged that the ‘‘idea of
combining the regulations across both
counties will make for a more cohesive
plan and environment.’’ However, while
there was no clear objection to the
recodification of the existing SIP rules,
the commenter asserted that much has
changed since the original rules were
adopted with respect to environmental
justice (EJ) and economic and
environmental conditions. The
commenter also suggested that the SIP
revision at issue could represent an
opportunity to evaluate the existing
rules in light of current topics and
conditions and provide for community
growth and input and to restructure the
laws and regulations to get the best
outcome for everyone, rather than
simply reestablishing existing rules.
Response 1: The commenter correctly
states that ‘‘the original rules have been
in place for several decades at this
point.’’ We acknowledge the
commenter’s interest in more current
and potentially better regulations or
regulatory strategies from the FRAQMD.
We encourage public participation in
the FRAQMD’s current and future rule
development efforts. The purpose of this
EPA rulemaking is to replace the
SCAPCD and YCAPCD rules now
existing in the federally enforceable SIP
in favor of rules that reflect the
FRAQMD’s current locally enforceable
rulebook. This aligns the federally
enforceable SIP versions of the rules
with those that are in effect in the
FRAQMD until the FRAQMD develops
more current regulations.
E:\FR\FM\19MRR1.SGM
19MRR1
]]>Agencies
[Federal Register Volume 90, Number 52 (Wednesday, March 19, 2025)]
[Rules and Regulations]
[Pages 12685-12688]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-04445]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2538; Project Identifier MCAI-2023-01211-E;
Amendment 39-22991; AD 2025-06-03]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
[[Page 12686]]
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2022-24-06
for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model BR700-
710A1-10, BR700-710A2-20, and BR700-710C4-11 engines. AD 2022-24-06
required initial and repetitive visual inspections of certain low-
pressure compressor (LPC) rotor (fan) disks and replacement of any LPC
rotor (fan) disk with cracks detected. AD 2022-24-06 also allows for
modification of the engine in accordance with RRD service information
as a terminating action to these inspections. Since the FAA issued AD
2022-24-06, the manufacturer published updated service information and
revised the engine maintenance manual (EMM) to provide instructions for
an improved ultrasonic inspection method, which prompted this AD. This
AD requires initial and repetitive visual inspections of certain LPC
rotor (fan) disks and replacement of any LPC rotor (fan) disk with
cracks detected and would allow modification of the engine as a
terminating action to the inspections, as specified in a European Union
Aviation Safety Agency (EASA) 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 April 23, 2025.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of April 23,
2025.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2024-2538; 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:
For EASA material identified in this AD, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: [email protected]. You may find this material on the EASA
website at ad.easa.europa.eu.
You may view this material at the 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. It is also available at
regulations.gov under Docket No. FAA-2024-2538.
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:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2022-24-06, Amendment 39-22246 (87 FR
73919, December 2, 2022), (AD 2022-24-06). AD 2022-24-06 applied to RRD
Model BR700-710A1-10, BR700-710A2-20, and BR700-710C4-11 engines. AD
2022-24-06 required initial and repetitive visual inspections of
certain LPC rotor (fan) disks and replacement of any LPC rotor (fan)
disk with cracks detected. AD 2022-24-06 also allows for modification
of the engine in accordance with RRD service information as a
terminating action to these inspections. The FAA issued AD 2022-24-06
to prevent failure of the LPC rotor fan or blade.
The NPRM published in the Federal Register on November 26, 2024 (89
FR 93230). The NPRM was prompted by EASA AD 2022-0110R1, dated November
22, 2023 (EASA AD 2022-0110R1) (also referred to as the MCAI), issued
by EASA, which is the Technical Agent for the Member States of the
European Union. The MCAI states that the manufacturer published updated
service information and revised the EMM to provide instructions for an
improved ultrasonic inspection method for certain LPC rotor (fan)
disks.
In the NPRM, the FAA proposed to retain all of the requirements of
AD 2022-24-06. The NPRM proposed to require initial and repetitive
visual inspections of certain LPC rotor (fan) disks and replacement of
any LPC rotor (fan) disk with cracks detected and would allow
modification of the engine as a terminating action to the inspections,
as specified in EASA AD 2022-0110R1.
Discussion of Final Airworthiness Directive
Comments
The FAA received one comment from an anonymous commenter that
supported the NPRM without change.
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,
considered the comment received, and determined that air safety
requires adopting the 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.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed EASA AD 2022-0110R1, which specifies procedures
for initial and repetitive visual inspections of certain LPC rotor
(fan) disks, and replacement of any LPC rotor (fan) disk with cracks
detected.
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 the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD affects 586 engines installed on
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
----------------------------------------------------------------------------------------------------------------
Inspect LPC compressor rotor (fan) 4 work-hours x $85 per $0 $340 $199,240
disk. hour = $340.
----------------------------------------------------------------------------------------------------------------
[[Page 12687]]
The FAA estimates the following costs to do any necessary
replacements that would be required based on the results of the
required inspection. The agency has no way of determining the number of
engines that might need these replacements:
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
----------------------------------------------------------------------------------------------------------------
Replace LPC compressor rotor (fan) disk....... 10 work-hours x $85 per hour = $470,000 $470,850
$850.
----------------------------------------------------------------------------------------------------------------
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 has determined that this AD will not have federalism
implications under Executive Order 13132. This AD will not have a
substantial direct effect on the States, on the relationship between
the national government and the States, or on the distribution of power
and responsibilities among the various levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by:
0
a. Removing Airworthiness Directive AD 2022-24-06, Amendment 39-22246
(87 FR 73919, December 2, 2022); and
0
b. Adding the following new airworthiness directive:
2025-06-03 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-22991;
Docket No. FAA-2024-2538; Project Identifier MCAI-2023-01211-E.
(a) Effective Date
This airworthiness directive (AD) is effective April 23, 2025.
(b) Affected ADs
This AD replaces AD 2022-24-06, Amendment 39-22246 (87 FR 73919,
December 2, 2022) (AD 2022-24-06).
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD)
Model BR700-710A1-10, BR700-710A2-20, and BR700-710C4-11 engines as
identified in European Union Aviation Safety Agency AD 2022-0110R1,
dated November 22, 2023 (EASA AD 2022-0110R1).
(d) Subject
Joint Aircraft Service Component (JASC) Code 7230, Turbine
Engine Compressor Section.
(e) Unsafe Condition
This AD was prompted by reports of cracks on certain low-
pressure compressor (LPC) rotor (fan) disks. The FAA is issuing this
AD to prevent failure of the LPC rotor fan or blade. The unsafe
condition, if not addressed, could result in high energy debris
release, damage to the airplane, and 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 paragraphs (h) and (i) of this AD:
Perform all required actions within the compliance times specified
in, and in accordance with, EASA AD 2022-0110R1.
(h) Exceptions to EASA AD 2022-0110R1
(1) Where EASA AD 2022-0110R1 requires compliance from its
effective date, this AD requires using the effective date of this
AD.
(2) Where EASA AD 2022-0110R1 requires compliance from ``29 June
2022 [the effective date of the original issue of this AD],'' this
AD requires replacing that text with ``January 6, 2023 (the
effective date of AD 2022-24-06).''
(3) This AD does not require compliance with paragraph (7) of
EASA AD 2022-0110R1. The actions required by paragraph 7 of EASA AD
2022-0110R1 were included in AD 2022-26-02, Amendment 39-22280 (87
FR 78846, December 23, 2022), and for this AD may be used for
informational purposes.
(4) This AD does not adopt the ``Remarks'' paragraph of EASA AD
2022-0110R1.
(i) No Reporting Requirement
Although the service information referenced in EASA AD 2022-
0110R1 specifies to submit certain information to the manufacturer,
this AD does not include that requirement.
(j) 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 local
Flight Standards District Office, as appropriate. If sending
information directly to the manager of AIR-520 Continued Operational
Safety Branch, send it to the attention of the person identified in
paragraph (k) of this AD and email 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.
(k) 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].
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the material listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
[[Page 12688]]
(2) You must use this material as applicable to do the actions
required by this AD, unless the AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2022-0110R1,
dated November 22, 2023.
(ii) [Reserved]
(3) For EASA material identified in this AD, 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 material 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 [email protected].
Issued on March 11, 2025.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2025-04445 Filed 3-18-25; 8:45 am]
BILLING CODE 4910-13-P
