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[Federal Register Volume 90, Number 26 (Monday, February 10, 2025)]
[Rules and Regulations]
[Pages 9197-9201]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-02381]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-1887; Project Identifier MCAI-2023-01237-T; 
Amendment 39-22929; AD 2025-01-05]
RIN 2120-AA64

Airworthiness Directives; Embraer S.A. (Type Certificate 
Previously Held by Yabor[atilde] Ind[uacute]stria Aeron[aacute]utica 
S.A.; Embraer S.A.) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2022-25-
07, which applied to all Embraer S.A. Model ERJ 170-100 LR, -100 STD, -
100 SE, and -100 SU airplanes; and Model ERJ 170-200 LR, -200 SU, -200 
STD, and -200 LL airplanes. AD 2022-25-07 required revising the 
existing maintenance or inspection program, as applicable, to 
incorporate new or more restrictive airworthiness limitations. This AD 
was prompted by a determination that new or more restrictive 
airworthiness limitations are necessary. This AD continues to require 
all actions in AD 2022-25-07 and requires revising the existing 
maintenance or inspection program, as applicable, to incorporate new or 
more restrictive airworthiness limitations, and certain structural 
modifications, as specified in an Ag[ecirc]ncia Nacional de 
Avia[ccedil][atilde]o Civil (ANAC) 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 17, 2025.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of March 17, 
2025.
    The Director of the Federal Register approved the incorporation by 
reference of a certain other publication listed in this AD as of 
January 23, 2023 (87 FR 77493, December 19, 2022).
    The Director of the Federal Register approved the incorporation by 
reference of certain other publications listed in this AD as of 
February 10, 2020 (85 FR 453, January 6, 2020).

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2024-1887; 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 ANAC material identified in this AD, contact National 
Civil Aviation Agency (ANAC), Aeronautical Products Certification 
Branch (GGCP), Rua Dr. Orlando Feirabend Filho, 230--Centro Empresarial 
Aquarius--Torre B--Andares 14 a 18, Parque Residencial Aquarius, CEP 
12.246-190--S[atilde]o Jos[eacute] dos Campos--SP, Brazil; telephone 55 
(12) 3203-6600; email anac.gov.br">pac@anac.gov.br; website anac.gov.br/en/. You may 
find this material on the ANAC website at sistemas.anac.gov.br/
certificacao/DA/DAE.asp.
     For Embraer material, contact Embraer S.A., Technical 
Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim--
12227-901 S[atilde]o Jose dos Campos--SP--Brasil; telephone +55 12 
3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; email 
[email protected]; internet flyembraer.com.
     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. It is also available at regulations.gov under 
Docket No. FAA-2024-1887.

FOR FURTHER INFORMATION CONTACT: Joshua Bragg, Aviation Safety 
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
telephone 817-222-5366; email [email protected].

SUPPLEMENTARY INFORMATION: 

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2022-25-07, Amendment 39-22263 (87 FR 
77493, December 19, 2022) (AD 2022-25-07). AD 2022-25-07 applied to all 
Embraer S.A. Model ERJ 170-100 LR, -100 STD, -100 SE, and -100 SU 
airplanes; and Model ERJ 170-200 LR, -200 SU, -200 STD, and -200 LL 
airplanes. AD 2022-25-07 required revising the existing maintenance or 
inspection program, as applicable, to incorporate new or more 
restrictive airworthiness limitations. The FAA issued AD 2022-25-07 to 
address fatigue cracking of various principal structural elements 
(PSEs); such cracking could result in reduced structural integrity of 
the airplane. AD 2022-25-07 addressed safety significant latent 
failures; such failures, in combination with one or more other 
specified failures or events, could result in a hazardous or 
catastrophic failure condition of avionics, hydraulic systems, fire 
detection systems, fuel systems, or other critical systems. 
Furthermore, AD 2022-25-07 addressed the potential ignition sources 
inside fuel tanks caused by latent failures, alterations, repairs, or 
maintenance actions; such failures, in combination with flammable fuel 
vapors, could result in fuel tank explosions and consequent loss of the 
airplane.

[[Page 9198]]

    The NPRM published in the Federal Register on July 18, 2024 (89 FR 
58295). The NPRM was prompted by AD 2023-12-01, effective December 15, 
2023, issued by ANAC, which is the aviation authority for Brazil (ANAC 
AD 2023-12-01) (also referred to as the MCAI). The MCAI states that new 
or more restrictive airworthiness limitations have been developed for 
Part 1--Certification Maintenance Requirements, Part 2--Airworthiness 
Limitation Inspections (ALI)--Structures, Part 3--Fuel System 
Limitation Items, and Part 4--Life Limited Items of the EMBRAER 170/175 
maintenance review board report (MRBR). The MCAI also stated that only 
airplanes with certain serial numbers are affected.
    In the NPRM, the FAA proposed to continue to require the 
airworthiness limitations specified in paragraphs (g) and (i) of AD 
2022-25-07 until incorporation of the new or more restrictive 
airworthiness limitations and structural modifications, as specified in 
ANAC AD 2023-12-01 and required by paragraph (l) of this AD. The FAA is 
issuing this AD to address fatigue cracking of various principal 
structural elements (PSEs); such cracking could result in reduced 
structural integrity of the airplane. This AD also addresses safety 
significant latent failures; such failures, in combination with one or 
more other specified failures or events, could result in a hazardous or 
catastrophic failure condition of avionics, hydraulic systems, fire 
detection systems, fuel systems, or other critical systems. 
Furthermore, this AD addresses potential ignition sources inside fuel 
tanks caused by latent failures, alterations, repairs, or maintenance 
actions; such failures, in combination with flammable fuel vapors, 
could result in fuel tank explosions and consequent loss of the 
airplane.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2024-1887.

Discussion of Final Airworthiness Directive

Comments

    The FAA received a comment from the Air Line Pilots Association, 
International (ALPA), who supported the NPRM without change.
    The FAA received additional comments from Horizon Air. The 
following presents the comments received on the NPRM and the FAA's 
response to each comment.

Request To Update MRB Revision

    Horizon Air requested that the FAA update the revision for Appendix 
A--Airworthiness Limitations of EMBRAER 170/175 Maintenance Review 
Board Report (MRBR), MRB-1621, Revision 14, dated September 27, 2018, 
to Revision 19, dated July 14, 2023, referenced in paragraphs (p)(5)(i) 
and (ii) of this AD. Horizon Air asserted that Revision 19 is required 
to be incorporated by the MCAI referenced in paragraph (l) of this AD.
    FAA does not agree with the request. Appendix A--Airworthiness 
Limitations of EMBRAER 170/175 MRBR, MRB-1621, Revision 19, dated July 
14, 2023, is not explicitly referenced in this AD, since this AD 
directs operators to comply with the MCAI, which is incorporated by 
reference in this AD. Therefore, Revision 19 of that MRB is not 
incorporated by reference. The only MRBR document explicitly referenced 
in the AD requirements is Revision 14, as specified in the retained 
requirements in paragraph (g) of this AD. This AD has not been changed 
regarding this request.

Request To Allow for Incorporation of Temporary Revisions (TRs)

    Horizon stated that since the issuance of the MCAI, which requires 
Appendix A--Airworthiness Limitations of EMBRAER 170/175 Maintenance 
Review Board Report (MRBR), MRB-1621, Revision 19, dated July 14, 2023, 
ANAC has issued two TRs, TR 19-1, dated October 31, 2023, and TR 19-2, 
dated March 21, 2024. Horizon requested that the FAA clarify whether 
paragraph (m)(2) of the proposed AD allows incorporating approved 
temporary revisions (TRs) of MRB-1621 subsequent to Revision 19, dated 
July 14, 2023. If TR 19-1 and 19-2 are not specifically allowed, 
Horizon requested that the proposed AD be revised to allow use of TR 
19-1 and 19-2 and further revisions allowed by ANAC.
    Paragraph (m)(2) of this AD allows the use of alternative 
inspections and intervals published in later ANAC-approved revisions. 
The operators are allowed to incorporate Revision 19 of the MRB as 
modified by TR 19-1 and TR 19-2. This AD has not been changed regarding 
this request.

Request To Terminate Exceptions Related to Retained Actions

    Horizon requested that the FAA terminate the exceptions paragraphs 
related to retained actions. Horizon stated that the new actions in 
paragraph (l) of the proposed AD terminate the retained actions in 
paragraphs (g) and (i) of the AD. Those paragraphs had their own 
exceptions paragraphs that also carried over from AD 2022-25-07. Those 
exceptions paragraphs are no longer applicable.
    The FAA agrees the retained restrictions and exceptions are no 
longer applicable once the terminating action is accomplished. The FAA 
does not agree with the need to terminate paragraphs (h), (j), and (k) 
of the AD because those provisions no longer apply once the actions of 
paragraph (l) of this AD are accomplished. This AD has not been changed 
regarding this request.

Conclusion

    This product has been approved by the aviation authority of another 
country and is approved for operation in the United States. Pursuant to 
the FAA's bilateral agreement with this State of Design Authority, it 
has notified the FAA of the unsafe condition described in the MCAI 
referenced above. The FAA reviewed the relevant data, considered the 
comments received, and determined that air safety requires adopting 
this AD as proposed. Accordingly, the FAA is issuing this AD to address 
the unsafe condition on this product. Except for minor editorial 
changes, this AD is adopted as proposed in the NPRM. None of the 
changes will increase the economic burden on any operator.

Material Incorporated by Reference Under 1 CFR Part 51

    ANAC AD 2023-12-01, effective December 15, 2023, specifies new or 
more restrictive airworthiness limitations for certification 
maintenance requirements, airplane structures, fuel systems, and safe 
life limits.
    This AD also requires ANAC AD 2022-02-01, effective February 9, 
2022, which the Director of the Federal Register approved for 
incorporation by reference as of January 23, 2023 (87 FR 77493, 
December 19, 2022).
    This AD also requires Appendix A--Airworthiness Limitations of 
EMBRAER 170/175 Maintenance Review Board Report (MRBR), MRB-1621, 
Revision 14, dated September 27, 2018; and Embraer Temporary Revision 
(TR) 14-1, dated November 13, 2018, to Part 4--Life-Limited Items, of 
Appendix A of EMBRAER 170/175 Maintenance Review Board Report (MRBR), 
MRB-1621, Revision 14, dated September 27, 2018; which the Director of 
the Federal Register approved for incorporation by reference as of 
February 10, 2020 (85 FR 453, January 6, 2020).
    This material is reasonably available because the interested 
parties have

[[Page 9199]]

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 662 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:
    The FAA estimates the following costs to comply with the retained 
actions from AD 2022-25-07:

                                     Estimated Costs for Required Actions *
----------------------------------------------------------------------------------------------------------------
                                                                        Cost per
              Action                    Labor cost       Parts cost      product       Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Retained structural modifications  196 work-hours x         $98,860      $115,520   Up to $76,474,240.
                                    $85 per hour =
                                    $16,660.
----------------------------------------------------------------------------------------------------------------
* Table does not include estimated costs for revising the existing maintenance or inspection program.

    The FAA estimates the total cost per operator for the retained 
revision of the existing maintenance or inspection program from AD 
2022-25-07 to be $7,650 (90 work-hours x $85 per work-hour).
    The FAA has determined that revising the existing maintenance or 
inspection program takes an average of 90 work-hours per operator, 
although the agency recognizes that this number may vary from operator 
to operator. Since operators incorporate maintenance or inspection 
program changes for their affected fleet(s), the FAA has determined 
that a per-operator estimate is more accurate than a per-airplane 
estimate.
    The FAA estimates the total cost per operator for the new actions 
to be $7,650 (90 work-hours x $85 per work-hour).

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: General requirements. 
Under that section, Congress charges the FAA with promoting safe flight 
of civil aircraft in air commerce by prescribing regulations for 
practices, methods, and procedures the Administrator finds necessary 
for safety in air commerce. This regulation is within the scope of that 
authority because it addresses an unsafe condition that is likely to 
exist or develop on products identified in this rulemaking action.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Will not affect intrastate aviation in Alaska, and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by:
0
a. Removing Airworthiness Directive (AD) 2022-25-07, Amendment 39-22263 
(87 FR 77493, December 19, 2022); and
0
b. Adding the following new AD:

2025-01-05 Embraer S.A. (Type Certificate Previously Held by 
Yabor[atilde] Ind[uacute]stria Aeron[aacute]utica S.A.; Embraer 
S.A.): Amendment 39-22929; Docket No. FAA-2024-1887; Project 
Identifier MCAI-2023-01237-T.

(a) Effective Date

    This airworthiness directive (AD) is effective March 17, 2025.

(b) Affected ADs

    This AD replaces AD 2022-25-07, Amendment 39-22263 (87 FR 77493, 
December 19, 2022) (AD 2022-25-07).

(c) Applicability

    This AD applies to Embraer S.A. Model ERJ 170-100 LR, -100 SE, -
100 STD, and -100 SU airplanes; and Model ERJ 170-200 LR, -200 STD, 
-200 SU, and -200 LL airplanes; certificated in any category, with 
manufacturer serial numbers 17000002, 17000004 through 17000013 
inclusive, and 17000015 through 17000948 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 05, Time Limits/
Maintenance Checks.

(e) Unsafe Condition

    This AD was prompted by a determination that new or more 
restrictive airworthiness limitations are necessary. The FAA is 
issuing this AD to address fatigue cracking of various principal 
structural elements (PSEs); such cracking could result in reduced 
structural integrity of the airplane. The FAA is also issuing this 
AD to address safety significant latent failures; such failures, in 
combination with one or more other specified failures or events, 
could result in a hazardous or catastrophic failure condition of 
avionics, hydraulic systems, fire detection systems, fuel systems, 
or other critical systems. Furthermore, the FAA is issuing this AD 
to address potential ignition sources inside fuel tanks caused by 
latent failures, alterations, repairs, or maintenance actions; such 
failures, in combination with flammable fuel vapors, could result in 
fuel tank explosions and consequent loss of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Retained Revision of the Existing Maintenance or Inspection Program 
From AD 2019-25-16, Amendment 39-21015 (85 FR 453, January 6, 2020) (AD 
2019-25-16), With No Changes

    This paragraph restates the requirements of paragraph (g) of AD 
2022-25-07, with no changes. For Model ERJ 170-100 LR, -100 STD, -
100 SE, and -100 SU airplanes; and Model ERJ 170-200 LR, -200 SU, -
200 STD, and -200LL airplanes; manufacturer serial numbers 17000002, 
17000004 through 17000013 inclusive, and 17000015 through 17000761 
inclusive: Within 90 days after February 10, 2020 (the effective 
date of AD 2019-25-16), revise the existing maintenance or 
inspection program, as applicable, to

[[Page 9200]]

incorporate the information specified in Part 1--Certification 
Maintenance Requirements, Part 2--Airworthiness Limitation 
Inspections (ALI) Structures, Part 3--Fuel System Limitation Items, 
and Part 4--Life Limited Items; and EMBRAER Temporary Revision (TR) 
14-1, dated November 13, 2018, to Part 4--Life Limited Items; of 
Appendix A of the EMBRAER 170/175 MRBR, MRB-1621, Revision 14, dated 
September 27, 2018 (EMBRAER 170/175 MRB-1621, Revision 14). The 
initial compliance time for doing the tasks is at the later of the 
times specified in paragraphs (g)(1) and (2) of this AD.
    (1) Within the applicable times specified in EMBRAER 170/175 
MRB-1621, Revision 14. For the purposes of this AD, the initial 
compliance times (identified as ``Threshold'' or ``T'' in EMBRAER 
170/175 MRB-1621, Revision 14) are expressed in ``total flight 
cycles'' or ``total flight hours,'' as applicable.
    (2) Within 90 days or 600 flight cycles after February 10, 2020 
(the effective date of AD 2019-25-16), whichever occurs later.

(h) Retained Restrictions on Alternative Actions, Intervals, and 
CDCCLs, With No Changes

    This paragraph restates the requirements of paragraph (h) of AD 
2022-25-07, with no changes. Except as required by paragraphs (i) 
and (l) of this AD: After the existing maintenance or inspection 
program has been revised as required by paragraph (g) of this AD, no 
alternative actions (e.g., inspections), intervals, or CDCCLs may be 
used unless the actions, intervals, and CDCCLs are approved as an 
AMOC in accordance with the procedures specified in paragraph (n)(1) 
of this AD.

(i) Retained Revision of the Existing Maintenance or Inspection 
Program, With No Changes

    This paragraph restates the requirements of paragraph (i) of AD 
2022-25-07, with no changes. For Embraer S.A. Model ERJ 170-100 LR, 
-100 STD, -100 SE, and -100 SU airplanes; and Model ERJ 170-200 LR, 
-200 SU, -200 STD, and -200 LL airplanes: Except as specified in 
paragraph (j) of this AD, comply with all required actions and 
compliance times specified in, and in accordance with, ANAC AD 2022-
02-01, dated February 9, 2022 (ANAC AD 2022-02-01). Accomplishing 
the revision of the existing maintenance or inspection program 
required by this paragraph terminates the requirements for Part 2--
Airworthiness Limitation Inspections (ALI) Structures specified in 
paragraph (g) of this AD only. Accomplishing the revision of the 
existing maintenance or inspection program required by paragraph (l) 
of this AD terminates the requirements of this paragraph.

(j) Retained Exceptions to ANAC AD 2022-02-01

    (1) Where ANAC AD 2022-02-01 refers to its effective date, this 
AD requires using January 23, 2023 (the effective date of AD 2022-
25-07).
    (2) The ``Alternative method of compliance (AMOC)'' section of 
ANAC AD 2022-02-01 does not apply to this AD.
    (3) Where paragraph (b)(1) of ANAC AD 2022-02-01 specifies 
incorporating all airworthiness limitations in Part 2 of the 
material specified in paragraph (b)(1) of ANAC AD 2022-02-01, for 
this AD, do not incorporate the threshold and interval for 
maintenance review board report (MRBR) task number 57-30-002-0002, 
``Enhanced Wingtip to Wing Spar Attachments--Internal.''
    Note 1 to paragraph (j)(3): AD 2022-11-51, Amendment 39-22074 
(87 FR 33623, June 3, 2022) (AD 2022-11-51), requires, among other 
actions, incorporating alternate thresholds and intervals for MRBR 
task number 57-30-002-0002. The airplanes affected by MRBR task 
number 57-30-002-0002 are identified in paragraph (c) of AD 2022-11-
51.

(k) Retained Provisions for Alternative Actions and Intervals, With a 
New Exception

    This paragraph restates the requirements of paragraph (k) of AD 
2022-25-07, with no changes. Except as required by paragraph (l) of 
this AD: After the existing maintenance or inspection program has 
been revised as required by paragraph (i) of this AD, no alternative 
actions (e.g., inspections), intervals, or CDCCLs are allowed unless 
they are approved as specified in paragraph (f) of ANAC AD 2022-02-
01.

(l) New Revision of the Existing Maintenance or Inspection Program

    Except as specified in paragraph (m) of this AD: Comply with all 
required actions and compliance times specified in, and in 
accordance with, Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o 
Civil (ANAC) AD 2023-12-01, effective December 15, 2023 (ANAC AD 
2023-12-01). Accomplishing the revision of the existing maintenance 
or inspection program required by this paragraph terminates the 
requirements in paragraphs (g) and (i) of this AD.

(m) Exceptions to ANAC AD 2023-12-01

    (1) Where ANAC AD 2023-12-01 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) Where paragraph (c) of ANAC AD 2023-12-01 refers to ``no 
alternative inspections or inspection intervals may be used unless 
the alternative inspection or interval is published in revisions 
approved by ANAC of the MRB-1621 which are subsequent to Revision 
19, dated July 14th, 2023, or approved as an alternative method of 
compliance (AMOC) in accordance with the procedures specified in 
paragraph (d) of this AD,'' for this AD, replace that text with ``no 
alternative actions (e.g., inspections), intervals, and CDCCLs may 
be used unless the alternative action (e.g., inspection), interval, 
or CDCCL is published in revisions approved by ANAC of the MRB-1621 
which are subsequent to Revision 19, dated July 14th, 2023.''
    (3) This AD does not adopt paragraph (d) of ANAC AD 2023-12-01.
    (4) Where paragraph (b)(1) of ANAC AD 2023-12-01 specifies 
incorporating all airworthiness limitations in Part 2 of the service 
information specified in paragraph (b)(1) of ANAC AD 2023-12-01, for 
this AD, do not incorporate the threshold and interval for MRBR task 
number 57-30-002-0002, ``Enhanced Wingtip to Wing Spar Attachments--
Internal.''
    Note 2 to paragraph (m)(4): AD 2022-11-51, requires, among other 
actions, incorporating alternate thresholds and intervals for MRBR 
task number 57-30-002-0002. The airplanes affected by MRBR task 
number 57-30-002-0002 are identified in paragraph (c) of AD 2022-11-
51.

(n) Additional AD Provisions

    The following provisions also apply to this AD:
    (1) 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 responsible Flight Standards Office, as 
appropriate. If sending information directly to the manager of the 
International Validation Branch, mail it to the address identified 
in paragraph (o) of this AD. Information may be emailed to: 
[email protected].
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions must be 
accomplished using a method approved by the Manager, International 
Validation Branch, FAA; or ANAC; or ANAC's authorized Designee. If 
approved by the ANAC Designee, the approval must include the 
Designee's authorized signature.

(o) Additional Information

    For more information about this AD, contact Joshua Bragg, 
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 817-222-5366; email 
[email protected].

(p) 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.
    (2) You must use this material as applicable to do the actions 
required by this AD, unless this AD specifies otherwise.
    (3) The following material was approved for IBR on March 17, 
2025.
    (i) Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) 
AD 2023-12-01, effective December 15, 2023.
    (ii) [Reserved]
    (4) The following material was approved for IBR on January 23, 
2023 (87 FR 77493, December 19, 2022).
    (i) ANAC AD 2022-02-01, effective February 9, 2022.
    (ii) [Reserved]
    (5) The following material was approved for IBR on February 10, 
2020 (85 FR 453, January 6, 2020).
    (i) Appendix A--Airworthiness Limitations of EMBRAER 170/175 
Maintenance Review Board Report (MRBR), MRB-1621, Revision 14, dated 
September 27, 2018.
    (ii) Embraer Temporary Revision (TR) 14-1, dated November 13, 
2018, to Part 4--Life-Limited Items, of Appendix A of EMBRAER 170/
175 Maintenance Review Board Report (MRBR), MRB-1621, Revision 14, 
dated September 27, 2018.

[[Page 9201]]

    (6) For ANAC ADs, contact ANAC, Aeronautical Products 
Certification Branch (GGCP), Rua Dr. Orlando Feirabend Filho, 230--
Centro Empresarial Aquarius--Torre B--Andares 14 a 18, Parque 
Residencial Aquarius, CEP 12.246-190--S[atilde]o Jos[eacute] dos 
Campos--SP, Brazil; telephone 55 (12) 3203-6600; email 
anac.gov.br">pac@anac.gov.br; website anac.gov.br/en/. You may find this ANAC AD 
on the ANAC website at sistemas.anac.gov.br/certificacao/DA/DAE.asp.
    (7) For Embraer material, contact Embraer S.A., Technical 
Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--
Putim--12227-901 Sao Jose dos Campos--SP--Brasil; telephone +55 12 
3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; email 
[email protected]; internet flyembraer.com.
    (8) 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.
    (9) 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 6, 2025.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2025-02381 Filed 2-7-25; 8:45 am]
BILLING CODE 4910-13-P
```