```

[Federal Register Volume 89, Number 224 (Wednesday, November 20, 2024)]
[Rules and Regulations]
[Pages 91541-91543]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-27254]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-2426; Project Identifier MCAI-2024-00625-T; 
Amendment 39-22886; AD 2024-23-07]
RIN 2120-AA64

Airworthiness Directives; Embraer S.A. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Embraer S.A. Model EMB-545 and EMB-550 airplanes. This AD was 
prompted by reports of corrosion, damage, and rupture on the down lock 
spring assemblies of the main landing gear (MLG) and nose landing gear 
(NLG). This AD requires inspecting for affected MLG and NLG down lock 
springs and replacing affected down lock springs, and prohibits the 
installation of affected parts, 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 November 20, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 20, 
2024.
    The FAA must receive comments on this AD by January 6, 2025.

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-2024-2426; 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 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.
     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-2024-2426.

FOR FURTHER INFORMATION CONTACT: Hassan Ibrahim, Aviation Safety 
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
telephone 206-231-3653; 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 
the ADDRESSES section. Include ``Docket No. FAA-2024-2426; Project 
Identifier MCAI-2024-00625-T'' 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 Hassan 
Ibrahim, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 206-231-3653; email 
[email protected]. Any commentary that the FAA receives which is 
not specifically designated as CBI will be placed in the public docket 
for this rulemaking.

Background

    ANAC, which is the aviation authority for Brazil, has issued ANAC 
Emergency AD 2024-10-02, effective October 21, 2024 (ANAC Emergency AD

[[Page 91542]]

2024-10-02) (also referred to as the MCAI), to correct an unsafe 
condition for certain Model Embraer S.A. Model EMB-545 and EMB-550 
airplanes. The MCAI states that corrosion, damage, and rupture have 
been found on down lock spring assemblies of the MLG and NLG, which, 
under specific load conditions on the ground, may compromise the 
locking and holding of the MLG and NLG in their correct kinematics 
positions. Failure of these down lock springs could cause a non-
annunciated loss of down locking capability, which may collapse the MLG 
and the NLG structure during takeoff or landing.
    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-2024-2426.

Material Incorporated by Reference Under 1 CFR Part 51

    ANAC Emergency AD 2024-10-02 specifies procedures for a general 
visual inspection for affected MLG and NLG down lock springs, and 
replacement of affected down lock springs. ANAC Emergency AD 2024-10-02 
also prohibits the installation of affected down lock springs. 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.

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 
referenced above. The FAA is issuing this AD after determining that the 
unsafe condition described previously is likely to exist or develop on 
other products of the same type design.

Requirements of This AD

    This AD requires accomplishing the actions specified in ANAC 
Emergency AD 2024-10-02 described previously, except for any 
differences identified as exceptions in the regulatory text of this AD.

Explanation of Required Compliance Information

    In the FAA's ongoing efforts to improve the efficiency of the AD 
process, the FAA developed a process to use some civil aviation 
authority (CAA) ADs as the primary source of information for compliance 
with requirements for corresponding FAA ADs. The FAA has been 
coordinating this process with manufacturers and CAAs. As a result, 
ANAC Emergency AD 2024-10-02 is incorporated by reference in this AD. 
This AD requires compliance with ANAC Emergency AD 2024-10-02 in its 
entirety through that incorporation, except for any differences 
identified as exceptions in the regulatory text of this AD. Material 
required by ANAC Emergency AD 2024-10-02 for compliance will be 
available at regulations.gov under Docket No. FAA-2024-2426 after this 
AD is published.

Interim Action

    The FAA considers that this AD is an interim action. If final 
action is later identified, the FAA might consider further rulemaking 
then.

Justification for Immediate Adoption and Determination of the Effective 
Date

    Section 553(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. Further, section 553(d) of the APA 
authorizes agencies to make rules effective in less than 30 days, upon 
a finding of good cause.
    An unsafe condition exists that requires the immediate adoption of 
this AD without providing an opportunity for public comments prior to 
adoption. The FAA has found that the risk to the flying public 
justifies forgoing notice and comment prior to adoption of this rule 
because failure of the MLG and NLG down lock spring assemblies could 
cause a non-annunciated loss of down locking capability, which may 
collapse the MLG and the NLG structure during takeoff or landing. The 
compliance time in this AD is shorter than the time necessary for the 
public to comment and for publication of the final rule. Accordingly, 
notice and opportunity for prior public comment are impracticable and 
contrary to the public interest pursuant to 5 U.S.C. 553(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 forgo notice and 
comment.

Regulatory Flexibility Act (RFA)

    The requirements of the 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 the FAA has determined that it has good cause to adopt 
this rule without notice and comment, RFA analysis is not required.

Costs of Compliance

    The FAA estimates that this AD affects 55 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
           Labor cost                    Parts cost              Cost per product        Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 17 work-hours x $85 per    Up to $4,379.............  Up to $5,824.............  Up to $320,320.
 hour = $1,445.
----------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some or all of the costs of this AD 
may be covered under warranty, thereby reducing the cost impact on 
affected individuals. The FAA does not control warranty coverage for 
affected individuals. As a result, the FAA has included all known costs 
in the cost estimate.

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

[[Page 91543]]

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:

2024-23-07 Embraer S.A.: Amendment 39-22886; Docket No. FAA-2024-
2426; Project Identifier MCAI-2024-00625-T.

(a) Effective Date

    This airworthiness directive (AD) is effective November 20, 
2024.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Embraer S.A. Model EMB-545 and EMB-550 
airplanes, certificated in any category, as identified in 
Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) 
Emergency AD 2024-10-02, effective October 21, 2024 (ANAC Emergency 
AD 2024-10-02).

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing 
gear.

(e) Unsafe Condition

    This AD was prompted by reports of corrosion, damage, and 
rupture on the down lock spring assemblies of the main landing gear 
(MLG) and nose landing gear (NLG), which, under specific load 
conditions on the ground, may compromise the locking and holding of 
the MLG and NLG in their correct kinematics positions. The FAA is 
issuing this AD to prevent failure of these down lock springs, which 
could cause a non-annunciated loss of down locking capability and 
result in collapse of the MLG and the NLG structure during takeoff 
or landing.

(f) Compliance

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

(g) Requirements

    Except as specified in paragraphs (h) and (i) of this AD: Comply 
with all required actions and compliance times specified in, and in 
accordance with, ANAC Emergency AD 2024-10-02.

(h) Exceptions to ANAC Emergency AD 2024-10-02

    (1) Where ANAC Emergency AD 2024-10-02 refers to its effective 
date, this AD requires using the effective date of this AD.
    (2) Where Note 1 of ANAC Emergency AD 2024-10-02 defines a non-
affected part 1 as ``an airworthy part according to the applicable 
requirements and is not an affected part according to the (a)(1) 
paragraph of this EAD,'' for this AD replace that text with ``an 
airworthy part that is not an affected part according to paragraph 
(a)(1) of this EAD.''
    (3) Where Note 2 of ANAC Emergency AD 2024-10-02 defines a non-
affected part 2 as ``an airworthy part according to the applicable 
requirements and is not an affected part according to the (a)(2) 
paragraph of this EAD,'' for this AD replace that text with ``an 
airworthy part that is not an affected part according to paragraph 
(a)(2) of this EAD.''
    (4) This AD does not adopt paragraph (g) of ANAC Emergency AD 
2024-10-02.

(i) Returning Parts Not Required

    Although the material referenced in ANAC Emergency AD 2024-10-02 
specifies to send removed parts to the manufacturer, this AD does 
not include that requirement.

(j) 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, send it to the attention of the 
person identified in paragraph (k) of this AD and email to: 
[email protected]. Before using any approved AMOC, notify your 
appropriate principal inspector, or lacking a principal inspector, 
the manager of the responsible Flight Standards Office.
    (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.

(k) Additional Information

    For more information about this AD, contact Hassan Ibrahim, 
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 206-231-3653; 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.
    (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 November 20, 
2024.
    (i) Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) 
Emergency AD 2024-10-02, effective October 21, 2024.
    (ii) [Reserved]
    (4) 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.
    (5) 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.
    (6) 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 November 12, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-27254 Filed 11-18-24; 11:15 am]
BILLING CODE 4910-13-P
```