
[Federal Register Volume 88, Number 241 (Monday, December 18, 2023)]
[Rules and Regulations]
[Pages 87336-87338]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-27678]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2023-1807; Project Identifier MCAI-2023-00394-T; 
Amendment 39-22618; AD 2023-24-02]
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.; Empresa Brasileira de Aeron[aacute]utica S.A. 
(EMBRAER)) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Embraer S.A. Model EMB-135BJ airplanes. This AD was prompted by 
reports of missing sealant on the rivets installed in the interface 
between rib 3 and the wing skin. This AD requires applying sealant on 
the rivets installed in the interface between rib 3 and wing skin, 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 January 22, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of January 22, 
2024.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2023-1807; 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 material incorporated by reference in this AD, 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 
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 in the AD docket at 
regulations.gov under Docket No. FAA-2023-1807.

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:

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to certain Embraer S.A. 
Model EMB-135BJ airplanes. The NPRM published in the Federal Register 
on August 30, 2023 (88 FR 59813). The NPRM was prompted by AD 2023-03-
01, effective March 6, 2023, issued by ANAC, which is the aviation 
authority for Brazil (ANAC AD 2023-03-01) (also referred to as the 
MCAI). The MCAI states that missing sealant was identified on the 
rivets installed in the interface between rib 3 and the wing skin in 
some Embraer Model EMB-135BJ airplanes. The lack of sealant when a 
failure on the rivet installation exists may result in a potential 
ignition source inside the fuel tank during a lightning strike, which, 
combined with flammable fuel vapors, could result in a

[[Page 87337]]

fuel tank explosion and consequent loss of the airplane.
    In the NPRM, the FAA proposed to require applying sealant on the 
rivets installed in the interface between rib 3 and wing skin, as 
specified in ANAC AD 2023-03-01. 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-2023-1807.

Discussion of Final Airworthiness Directive

Comments

    The FAA received no comments on the NPRM or on the determination of 
the cost to the public.

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 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.

Related Service Information Under 1 CFR Part 51

    ANAC AD 2023-03-01 specifies procedures for applying sealant on the 
rivets installed in the interface between rib 3 and wing skin.
    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 10 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 7 work-hours x $85 per hour =              $0  Up to $595...........  Up to $5,950.
 $595.
----------------------------------------------------------------------------------------------------------------

    The FAA has included all known costs in its cost estimate. 
According to the manufacturer, however, some or 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,
    (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 adding the following new airworthiness 
directive:

2023-24-02 Embraer S.A. (Type Certificate Previously Held by 
Yabor[atilde] Ind[uacute]stria Aeron[aacute]utica S.A.; Embraer 
S.A.; Empresa Brasileira de Aeron[aacute]utica S.A. (EMBRAER)): 
Amendment 39-22618; Docket No. FAA-2023-1807; Project Identifier 
MCAI-2023-00394-T.

(a) Effective Date

    This airworthiness directive (AD) is effective January 22, 2024.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Embraer S.A. Model EMB-135BJ airplanes, 
certificated in any category, having serial numbers 14501119 through 
14501165 inclusive, 14501167 through 14501215 inclusive, and 
14501217 through 14501236 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 57, Wings.

(e) Unsafe Condition

    This AD was prompted by reports of missing sealant on the rivets 
installed in the interface between rib 3 and the wing skin. The FAA 
is issuing this AD to address the lack of sealant on the rivets, 
which may result in a potential ignition source inside the fuel tank 
during a lightning strike when a failure on the rivet installation 
exists, which, combined with flammable fuel vapors, could result in 
a fuel tank explosion and consequent loss of the airplane.

(f) Compliance

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

(g) Requirements

    Except as specified in paragraph (h) 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 2023-03-01,

[[Page 87338]]

effective March 6, 2023 (ANAC AD 2023-03-01).

(h) Exceptions to ANAC AD 2023-03-01

    (1) Where ANAC AD 2023-03-01 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) This AD does not adopt paragraph (c)(1) of ANAC AD 2023-03-
01.

(i) No Reporting Requirement

    Although the service information referenced in ANAC AD 2023-03-
01 specifies to submit certain information 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 International 
Validation Branch, send it to the attention of the person identified 
in paragraph (k) of this AD. Information may be emailed 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 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 this AD specifies otherwise.
    (i) Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) 
AD 2023-03-01, effective March 6, 2023.
    (ii) [Reserved]
    (3) For ANAC AD 2023-03-01, 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.
    (4) You may view this service information 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/ibr-locations.html or email [email protected].

    Issued on November 29, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2023-27678 Filed 12-15-23; 8:45 am]
BILLING CODE 4910-13-P


