[Federal Register Volume 89, Number 67 (Friday, April 5, 2024)]
[Proposed Rules]
[Pages 23951-23954]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-06994]


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 Proposed Rules
                                                 Federal Register
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 This section of the FEDERAL REGISTER contains notices to the public of 
 the proposed issuance of rules and regulations. The purpose of these 
 notices is to give interested persons an opportunity to participate in 
 the rule making prior to the adoption of the final rules.
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  Federal Register / Vol. 89, No. 67 / Friday, April 5, 2024 / Proposed 
Rules  

[[Page 23951]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0992; Project Identifier MCAI-2024-00030-T]
RIN 2120-AA64


Airworthiness Directives; Airbus SAS Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD) 
2019-21-01, which applies to all Airbus SAS Model A300 B4-600, B4-600R, 
and F4-600R series airplanes, and Model A300 C4-605R Variant F 
airplanes (collectively called Model A300-600 series airplanes). AD 
2019-21-01 requires revising the existing maintenance or inspection 
program, as applicable, to incorporate new or more restrictive 
airworthiness limitations. Since the FAA issued AD 2019-21-01, the FAA 
has determined that new or more restrictive airworthiness limitations 
are necessary. This proposed AD would require revising the existing 
maintenance or inspection program, as applicable, to incorporate new or 
more restrictive airworthiness limitations, as specified in a European 
Union Aviation Safety Agency (EASA) AD, which is proposed for 
incorporation by reference (IBR). The FAA is proposing this AD to 
address the unsafe condition on these products.

DATES: The FAA must receive comments on this proposed AD by May 20, 
2024.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to regulations.gov. Follow 
the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2024-0992; 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 NPRM, 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 EASA material that is proposed for IBR in this NPRM, 
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone 
+49 221 8999 000; email [email protected]; website easa.europa.eu. You 
may find this material on the EASA website at ad.easa.europa.eu.
     For Airbus SAS material, contact Airbus SAS, Airworthiness 
Office--EAW, Rond-Point Emile Dewoitine No: 2, 31700 Blagnac Cedex, 
France; telephone +33 5 61 93 36 96; fax +33 5 61 93 44 51; email 
airbus.com">account.airworth-eas@airbus.com; website airbus.com.
     You may view this material that is incorporated by 
reference 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-2024-0992.

FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aviation Safety Engineer, 
FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 206-
231-3225; email: [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under ADDRESSES. Include ``Docket No. FAA-2024-0992; Project Identifier 
MCAI-2024-00030-T'' at the beginning of your comments. The most helpful 
comments reference a specific portion of the proposal, 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 proposal 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 NPRM.

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 NPRM 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 NPRM, 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 NPRM. Submissions containing CBI should be sent to Dan 
Rodina, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; phone: 206-231-3225; email: [email protected]. Any 
commentary that the FAA receives that is not specifically designated as 
CBI will be placed in the public docket for this rulemaking.

Background

    The FAA issued AD 2019-21-01, Amendment 39-19767 (84 FR 56935, 
October 24, 2019) (AD 2019-21-01), for all Airbus SAS Model A300 B4-
600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R 
Variant F airplanes (collectively called Model A300-600 series 
airplanes). AD 2019-21-01 was prompted by an MCAI originated by EASA, 
which is the Technical Agent for the Member States of the European 
Union. EASA issued AD 2019-0090, dated April 26, 2019

[[Page 23952]]

(EASA AD 2019-0090) (which corresponds to FAA AD 2019-21-01), to 
correct an unsafe condition.
    AD 2019-21-01 requires revising the existing maintenance or 
inspection program, as applicable, to incorporate new or more 
restrictive airworthiness limitations. The FAA issued AD 2019-21-01 to 
address fatigue cracking, damage, and corrosion in principal structural 
elements, which could result in reduced structural integrity of the 
airplane. AD 2019-21-01 specifies that accomplishing the revision 
required by that AD terminates all requirements of AD 2018-01-07, 
Amendment 39-19148 (83 FR 2042, January 16, 2018) (AD 2018-01-07) and 
AD 2018-19-33, Amendment 39-19434 (83 FR 48932, September 28, 2018) (AD 
2018-19-33). This proposed AD would therefore continue to allow that 
terminating action.

Actions Since AD 2019-21-01 Was Issued

    Since the FAA issued AD 2019-21-01, EASA superseded AD 2019-0090 
and issued EASA AD 2024-0009, dated January 9, 2024 (EASA AD 2024-0009) 
(also referred to as the MCAI), for all Airbus SAS Model A300-600 
airplanes. The MCAI states that new or more restrictive airworthiness 
limitations have been developed.
    The FAA is proposing 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-2024-0992.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed EASA AD 2024-0009. This service information 
specifies new or more restrictive airworthiness limitations for 
airplane structures and safe life limits.
    This proposed AD also would also require Airbus A300-600 
Airworthiness Limitations Section (ALS), Part 2, ``Damage Tolerant 
Airworthiness Limitation Items (DT-ALI),'' Revision 03, dated December 
14, 2018, which the Director of the Federal Register approved for 
incorporation by reference as of November 29, 2019 (84 FR 56935, 
October 24, 2019).
    This material is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in ADDRESSES.

FAA's Determination

    This product has been approved by the aviation authority of another 
country and is approved for operation in the United States. Pursuant to 
the FAA's bilateral agreement with this State of Design Authority, it 
has notified the FAA of the unsafe condition described in the MCAI 
referenced above. The FAA is issuing this NPRM after determining that 
the unsafe condition described previously is likely to exist or develop 
in other products of the same type design.

Proposed AD Requirements in This NPRM

    This proposed AD would retain all requirements of AD 2019-21-01. 
This proposed AD would also require revising the existing maintenance 
or inspection program, as applicable, to incorporate additional new or 
more restrictive airworthiness limitations, which are specified in EASA 
AD 2024-0009 already described, as proposed for incorporation by 
reference. Any differences with EASA AD 2024-0009 are identified as 
exceptions in the regulatory text of this AD.
    This proposed AD would require revisions to certain operator 
maintenance documents to include new actions (e.g., inspections). 
Compliance with these actions is required by 14 CFR 91.403(c). For 
airplanes that have been previously modified, altered, or repaired in 
the areas addressed by this proposed AD, the operator may not be able 
to accomplish the actions described in the revisions. In this 
situation, to comply with 14 CFR 91.403(c), the operator must request 
approval for an alternative method of compliance (AMOC) according to 
paragraph (m)(1) of this proposed 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, the 
FAA proposes to incorporate EASA AD 2024-0009 by reference in the FAA 
final rule. This proposed AD would, therefore, require compliance with 
EASA AD 2024-0009 through that incorporation, except for any 
differences identified as exceptions in the regulatory text of this 
proposed AD. Using common terms that are the same as the heading of a 
particular section in EASA AD 2024-0009 does not mean that operators 
need comply only with that section. For example, where the AD 
requirement refers to ``all required actions and compliance times,'' 
compliance with this AD requirement is not limited to the section 
titled ``Required Action(s) and Compliance Time(s)'' in EASA AD 2024-
0009. Service information required by EASA AD 2024-0009 for compliance 
will be available at regulations.gov by searching for and locating 
Docket No. FAA-2024-0992 after the FAA final rule is published.

Airworthiness Limitation ADs Using the New Process

    The FAA's process of incorporating by reference MCAI ADs as the 
primary source of information for compliance with corresponding FAA ADs 
has been limited to certain MCAI ADs (primarily those with service 
bulletins as the primary source of information for accomplishing the 
actions required by the FAA AD). However, the FAA is now expanding the 
process to include MCAI ADs that require a change to airworthiness 
limitation documents, such as airworthiness limitation sections.
    For these ADs that incorporate by reference an MCAI AD that changes 
airworthiness limitations, the FAA requirements are unchanged. 
Operators must revise the existing maintenance or inspection program, 
as applicable, to incorporate the information specified in the new 
airworthiness limitation document. The airworthiness limitations must 
be followed according to 14 CFR 91.403(c) and 91.409(e).
    The previous format of the airworthiness limitation ADs included a 
paragraph that specified that no alternative actions (e.g., 
inspections) or intervals may be used unless the actions and intervals 
are approved as an AMOC in accordance with the procedures specified in 
the AMOCs paragraph under ``Additional AD Provisions.'' This new format 
includes a ``New Provisions for Alternative Actions and Intervals'' 
paragraph that does not specifically refer to AMOCs, but operators may 
still request an AMOC to use an alternative action or interval.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect 120 airplanes of U.S. registry. The FAA estimates the following 
costs to comply with this proposed AD:
    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

[[Page 23953]]

is more accurate than a per-airplane 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 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 determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would 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 this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Would not affect intrastate aviation in Alaska, and
    (3) Would 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 Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 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) AD 2019-21-01, Amendment 39-
19767 (84 FR 56935, October 24, 2019); and
0
b. Adding the following new AD:

Airbus SAS: Docket No. FAA-2024-0992; Project Identifier MCAI-2024-
00030-T.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by May 20, 2024.

(b) Affected ADs

    This AD replaces AD 2019-21-01, Amendment 39-19767 (84 FR 56935, 
October 24, 2019) (AD 2019-21-01).

(c) Applicability

    This AD applies to all Airbus SAS Model A300 B4-600, B4-600R, 
and F4-600R series airplanes, and Model A300 C4-605R Variant F 
airplanes (collectively called Model A300-600 series airplanes), 
certificated in any category.

(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, damage, and corrosion 
in principal structural elements. The unsafe condition, if not 
addressed, could result in reduced structural integrity 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, With No Changes

    This paragraph restates the requirements of paragraph (g) of AD 
2019-21-01, with no changes. Within 90 days after November 29, 2019 
(the effective date of AD 2019-21-01), revise the existing 
maintenance or inspection program, as applicable, to incorporate the 
information specified in Airbus A300-600 Airworthiness Limitations 
Section (ALS), Part 2, ``Damage Tolerant Airworthiness Limitation 
Items (DT-ALI),'' Revision 03, dated December 14, 2018. The initial 
compliance time for doing the tasks is at the time specified in 
Airbus A300-600 Airworthiness Limitations Section (ALS), Part 2, 
``Damage Tolerant Airworthiness Limitation Items (DT-ALI),'' 
Revision 03, dated December 14, 2018, or within 90 days after 
November 29, 2019 (the effective date of AD 2019-21-01), whichever 
occurs later. Accomplishing the revision of the existing maintenance 
or inspection program required by paragraph (i) of this AD 
terminates the requirements of this paragraph.

(h) Retained Restrictions on Alternative Actions or Intervals With a 
New Exception

    This paragraph restates the requirements of paragraph (h) of AD 
2019-21-01, with a new exception. Except as required by paragraph 
(i) 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) or intervals may be used 
unless the actions and intervals are approved as an alternative 
method of compliance (AMOC) in accordance with the procedures 
specified in paragraph (m)(1) of this AD.

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

    Except as specified in paragraph (j) of this AD: Comply with all 
required actions and compliance times specified in, and in 
accordance with, EASA AD 2024-0009, dated January 9, 2024 (EASA AD 
2024-0009). Accomplishing the revision of the existing maintenance 
or inspection program required by this paragraph terminates the 
requirements of paragraph (g) of this AD.

(j) Exceptions to EASA AD 2024-0009

    (1) This AD does not adopt the requirements specified in 
paragraphs (1) and (2) of EASA AD 2024-0009.
    (2) Paragraph (4) of EASA AD 2024-0009 specifies revising ``the 
approved AMP,'' within 12 months after its effective date, but this 
AD requires revising the existing maintenance or inspection program, 
as applicable, within 90 days after the effective date of this AD.
    (3) The initial compliance time for doing the tasks specified in 
paragraph (4) of EASA AD 2024-0009 is at the applicable 
``limitations'' and ``associated thresholds'' as incorporated by the 
requirements of paragraph (4) of EASA AD 2024-0009, or within 90 
days after the effective date of this AD, whichever occurs later.
    (4) This AD does not adopt the provisions specified in 
paragraphs (5) and (6) of EASA AD 2024-0009.
    (5) This AD does not adopt the ``Remarks'' section of EASA AD 
2024-0009.

(k) New Provisions for Alternative Actions and Intervals

    After the existing maintenance or inspection program has been 
revised as required by paragraph (i) of this AD, no alternative 
actions (e.g., inspections) and intervals are allowed unless they 
are approved as specified in the provisions of the ``Ref. 
Publications'' section of EASA AD 2024-0009.

(l) Terminating Action for AD 2019-21-01

    Accomplishing the actions required by this AD terminates all 
requirements of AD 2019-21-01.

(m) 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.

[[Page 23954]]

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 
(n) 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 EASA; or Airbus SAS's EASA Design 
Organization Approval (DOA). If approved by the DOA, the approval 
must include the DOA-authorized signature.
    (3) Required for Compliance (RC): Except as required by 
paragraph (m)(2) of this AD, if any service information contains 
procedures or tests that are identified as RC, those procedures and 
tests must be done to comply with this AD; any procedures or tests 
that are not identified as RC are recommended. Those procedures and 
tests that are not identified as RC may be deviated from using 
accepted methods in accordance with the operator's maintenance or 
inspection program without obtaining approval of an AMOC, provided 
the procedures and tests identified as RC can be done and the 
airplane can be put back in an airworthy condition. Any 
substitutions or changes to procedures or tests identified as RC 
require approval of an AMOC.

(n) Additional Information

    For more information about this AD, contact Dan Rodina, Aviation 
Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; phone: 206-231-3225; email: [email protected].

(o) 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.
    (3) The following service information was approved for IBR on 
[DATE 35 DAYS AFTER PUBLICATION OF THE FINAL RULE].
    (i) European Union Aviation Safety Agency (EASA) AD 2024-0009, 
dated January 9, 2024.
    (ii) [Reserved]
    (4) The following service information was approved for IBR on 
November 29, 2019 (84 FR 56935, October 24, 2019).
    (i) Airbus A300-600 Airworthiness Limitations Section (ALS), 
Part 2, ``Damage Tolerant Airworthiness Limitation Items (DT-ALI),'' 
Revision 03, dated December 14, 2018.
    (ii) [Reserved]
    (5) For EASA AD 2024-0009, contact EASA, Konrad-Adenauer-Ufer 3, 
50668 Cologne, Germany; telephone +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.
    (6) For Airbus SAS material, contact Airbus SAS, Airworthiness 
Office--EAW, Rond-Point Emile Dewoitine No: 2, 31700 Blagnac Cedex, 
France; telephone +33 5 61 93 36 96; fax +33 5 61 93 44 51; email 
airbus.com">account.airworth-eas@airbus.com; website airbus.com.
    (7) You may view this material that is incorporated by reference 
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.
    (8) 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 28, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-06994 Filed 4-4-24; 8:45 am]
BILLING CODE 4910-13-P