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PROPOSED AD DASSAULT AVIATION: Docket No. FAA-2023-0013; Project Identifier MCAI-2022-01085-T.
(a) COMMENTS DUE DATE

    The FAA must receive comments  on this airworthiness directive (AD) by
    February 27, 2023.

(b) AFFECTED ADS

(1) This AD replaces AD 2017-09-03,  Amendment 39-18865 (82 FR 21467,  May
    9, 2017) (AD 2017-09-03) and AD 2018-20-07,  Amendment 39-19441 (83 FR
    49789, October 3, 2018) (AD 2018-20-07).

(2) This AD affects AD 2010-26-05, Amendment 39-16544 (75 FR 79952, Decem-
    ber 21, 2010) (AD 2010-26-05);

(c) APPLICABILITY

    This AD applies to all Dassault Aviation  Model MYSTERE-FALCON 50 air-
    planes, certificated in any category.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 05,  Time Limits/Main-
    tenance 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 reduced structural integrity of the airplane.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) RETAINED REVISION OF THE EXISTING MAINTENANCE  OR  INSPECTION PROGRAM,
    WITH NO CHANGES

    This paragraph restates the requirements of paragraph (g)  of AD 2018-
    20-07, with  no changes.  Within 90  days after  November 7, 2018 (the
    effective date of AD 2018-20-07), revise the maintenance or inspection
    program, as  applicable, to  incorporate the  information specified in
    Chapter  5-40,  Airworthiness Limitations,  DGT  113872,  Revision 24,
    dated July 2017,  of the Dassault  Falcon 50/50EX Maintenance  Manual.
    The  initial compliance  times for  doing the  tasks are  at the  time
    specified  in  Chapter 5-40,  Airworthiness  Limitations, DGT  113872,
    Revision  24,  dated  July  2017,  of  the  Dassault  Falcon   50/50EX
    Maintenance  Manual,  or  within  90  days  after  November  7,  2018,
    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  AND  INTERVALS  WITH  NO
    CHANGES

    This paragraph restates  the requirements of paragraph (h) of AD 2018-
    20-07, with no  changes. After the  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 or 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 re-
    quired actions and  compliance times specified  in, and in  accordance
    with, EASA AD  2022-0166,  dated August 11, 2022 (EASA  AD 2022-0166).
    Accomplishing the maintenance or inspection program revision  required
    by this paragraph terminates the requirements of paragraph (g) of this
    AD.

(j) EXCEPTIONS TO EASA AD 2022-0166

(1) The requirements  specified in paragraphs (1) and (2) of EASA AD 2022-
    0166 do not apply to this AD.

(2) Paragraph (3) of EASA AD 2022-0166  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
    (3)  of EASA AD 2022-0166  is  at  the  applicable  "limitations"  and
    "associated thresholds"  as  incorporated by the requirements of para-
    graph (3) of EASA AD 2022-0166,  or within 90 days after the effective
    date of this AD, whichever occurs later.

(4) The provisions  specified  in  paragraphs (4) and (5) of EASA AD 2022-
    0166 do not apply to this AD.

(5) The "Remarks" section of EASA AD 2022-0166 does not apply to this AD.

(k) NEW PROVISIONS FOR ALTERNATIVE ACTIONS AND INTERVALS

    After the maintenance  or  inspection program  has been revised as re-
    quired by  paragraph (g)  of this  AD, no  alternative actions  (e.g.,
    inspections)  or intervals  are allowed  unless they  are approved  as
    specified in the provisions of the "Ref. Publications" section of EASA
    AD 2022-0166.

(l) TERMINATING ACTIONS FOR AD 2010-26-05

    Accomplishing the actions required by paragraph (g) or (i) of this  AD
    terminates the  requirements of  AD 2010-26-05  for Dassault  Aviation
    Model MYSTERE-FALCON 50 airplanes only.

(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.  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 (n)  of
    this AD.  Information may  be emailed  to: 9-AVS-AIR-730-AMOC@faa.gov.
    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  Dassault Aviation's EASA  Design
    Organization Approval (DOA). If approved by the DOA, the approval must
    include the DOA-authorized signature.

(n) ADDITIONAL INFORMATION

    For more information about this AD,  contact Tom Rodriguez,  Aerospace
    Engineer, Large Aircraft Section, International Validation Branch, FAA
    2200 South 216th St, Des Moines, WA 98198; telephone 206-231-231-3226;
    email tom.rodriguez@faa.gov.

(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 2022-0166 dated August
    11, 2022.

(ii) [Reserved]

(4) The following service information was approved  for IBR on November 7,
    2018 (83 FR 49789, October 3, 2018).

(i) Chapter 5-40, Airworthiness Limitations, DGT 113872 Revision 24, dated
    July 2017, of the Dassault Falcon 50/50EX Maintenance Manual.

(ii) [Reserved]

(5) For EASA AD 2022-0166,  contact  EASA,  Konrad-Adenauer-Ufer 3,  50668
    Cologne, Germany; telephone +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.

(6) For service information identified in this AD, contact Dassault Falcon
    Jet Corporation, Teterboro Airport, PO Box 2000,  South Hackensack, NJ
    07606; telephone 201-440-6700; website dassaultfalcon.com.

(7) You may view this service information at the FAA,  Airworthiness Prod-
    ucts 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 service information  that is incorporated by refer-
    ence at the National Archives and Records Administration  (NARA).  For
    information on the availability  of this material  at NARA,  email fr.
    inspection@nara.gov,  or go to: www.archives.gov/federal-register/cfr/
    ibr-locations.html.

Issued on January 6, 2023.  Gaetano A. Sciortino, Acting Director, Compli-
ance & Airworthiness Division, Aircraft Certification Service.

DATES: The FAA must receive comments  on this proposed AD  by February 27,
2023.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2023-0013; Project Identifier MCAI-2022-01085-T]
RIN 2120-AA64

Airworthiness Directives; Dassault Aviation Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2017-09-03 and AD 2018-20-07, which apply to all Dassault Aviation
Model MYSTERE-FALCON 50 airplanes. AD 2017-09-03 and AD 2018-20-07
require revising the existing maintenance or inspection program, as
applicable, to incorporate new or more restrictive airworthiness
limitations. Since the FAA issued AD 2017-09-03 and AD 2018-20-07, the
FAA has determined that new or more restrictive airworthiness
limitations are necessary. This proposed AD would continue to require
the actions in AD 2018-20-07 and 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 February
27, 2023.

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-2023-0013; 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 material that is proposed for IBR in this NPRM,
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone
+49 221 8999 000; email ADs@easa.europa.eu; website easa.europa.eu. You
may find this material on the EASA website at ad.easa.europa.eu. It is
also available at regulations.gov under Docket No. FAA-2023-0013.
For service information identified in this NPRM, contact
Dassault Falcon Jet Corporation, Teterboro Airport, P.O. Box 2000,
South Hackensack, NJ 07606; telephone 201-440-6700; website
dassaultfalcon.com.
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.

FOR FURTHER INFORMATION CONTACT: Tom Rodriguez, Aerospace Engineer,
Large Aircraft Section, International Validation Branch, FAA, 2200
South 216th St., Des Moines, WA 98198; telephone 206-231-3226; email
tom.rodriguez@faa.gov.

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-2023-0013; Project Identifier
MCAI-2022-01085-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 Tom
Rodriguez, Aerospace Engineer, Large Aircraft Section, International
Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198;
telephone 206-231-231-3226; email tom.rodriguez@faa.gov. 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 2018-20-07, Amendment 39-19441 (83 FR 49789,
October 3, 2018) (AD 2018-20-07), for all Dassault Aviation Model
MYSTERE-FALCON 50 airplanes. AD 2018-20-07 was prompted by an MCAI
originated by EASA, which is the Technical Agent for the Member States
of the European Union. EASA issued AD 2018-0026, dated January 30, 2018
(EASA 2018-0026) (which corresponds to FAA AD 2018-20-07), to correct
an unsafe condition.
AD 2018-20-07 requires revising the existing maintenance or
inspection program, as applicable, to incorporate new and more
restrictive maintenance requirements and airworthiness limitations. The
FAA issued AD 2018-20-07 to address reduced structural integrity of the
airplane. AD 2018-20-07 specifies that accomplishing the revision
required by that AD terminates all requirements of AD 2017-09-03,
Amendment 39-18865 (82 FR 21467, May 9, 2017) (AD 2017-09-03). AD 2018-
20-07 also specifies that it terminates the requirements of AD 2010-26-
05, Amendment 39-16544 (75 FR 79952, December 21, 2010) (AD 2010-26-05)
and AD 2012-02-18, Amendment 39-16941 (77 FR 12175, February 29, 2012)
(AD 2012-02-18) for certain Dassault Aviation Model MYSTERE-FALCON 50
airplanes. AD 2012-02-18 has since been removed (84 FR 11640, March 28,
2019). This proposed AD would therefore supersede AD 2017-09-03 and
terminate the requirements of AD 2010-26-05 for Dassault Aviation Model
MYSTERE-FALCON 50 airplanes only.

Actions Since AD 2018-20-07 Was Issued

Since the FAA issued AD 2018-20-07, EASA superseded AD 2018-0026
and issued EASA AD 2022-0166, dated August 11, 2022 (EASA AD 2022-0166)
(referred to after this as the MCAI), for all Dassault Aviation Model
MYSTERE-FALCON 50 airplanes. The MCAI states that new or more
restrictive airworthiness limitations have been developed.
The FAA is proposing this AD to address reduced structural
integrity of the airplane. You may examine the MCAI in the AD docket at
regulations.gov under Docket No. FAA-2023-0013.

Related Service Information Under 1 CFR Part 51

The FAA reviewed EASA AD 2022-0166. This service information
specifies new or more restrictive airworthiness limitations for
airplane structures and safe life limits.
This proposed AD would also require Chapter 5-40, Airworthiness
Limitations, DGT 113872, Revision 24, dated July 2017, of the Dassault
Falcon 50/50EX Maintenance Manual, which the Director of the Federal
Register approved for incorporation by reference as of November 7, 2018
(83 FR 49789, October 3, 2018).
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 the State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI
described 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 2018-20-07.
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 2022-0166 already described, as proposed for incorporation by
reference. Any differences with EASA AD 2022-0166 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 2022-0166 by
reference in the FAA final rule. This proposed AD would, therefore,
require compliance with EASA AD 2022-0166 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 2022-0166 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 2022-
0166. Service information required by EASA AD 2022-0166 for compliance
will be available at regulations.gov by searching for and locating
Docket No. FAA-2023-0013 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 239 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
The FAA estimates the total cost per operator for the retained
actions from AD 2018-20-07 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 proposed
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

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

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]

2. The FAA amends Sec. 39.13 by:

a. Removing Airworthiness Directive (AD) AD 2017-09-03, Amendment 39-
18865 (82 FR 21467, May 9, 2017) and AD 2018-20-07, Amendment 39-19441
(83 FR 49789, October 3, 2018); and

b. Adding the following new AD: