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Federal Register / Vol. 86, No. 23 / Friday, February 5, 2021 / Rules and Regulations ESTIMATED COSTS OF ON-CONDITION ACTIONS
Labor cost
Parts cost
Up to 3 work-hours $85 per hour = Up to $255 per mask stowage box

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 operators. The FAA does not control warranty coverage for affected operators.
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 FAAs 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 Agencys 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.

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Regulatory Findings The FAA determined that 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.
Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

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PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20210318 Dassault Aviation:
Amendment 3921421; Docket No.
FAA20210024; Project Identifier MCAI202100105T.
a Effective Date This airworthiness directive AD becomes effective February 22, 2021.
b Affected ADs None.
c Applicability This AD applies to all Dassault Aviation Model FALCON 7X airplanes, certificated in any category.
Note 1 to paragraph c: Model FALCON
7X airplanes include those that have embodied Dassault modification mod M1000 commercially known as Falcon 8X
in production.
d Subject Air Transport Association ATA of America Code 35, Oxygen.
e Reason This AD was prompted by a report of deviations concerning the assembly and overhaul of certain crew oxygen mask stowage boxes, including incorrect application of Loctite 222 thread-locker on the fitting sensor screws. The FAA is issuing this AD to address such deviations, which could lead to blocked oxygen supply flow to flight deck crew oxygen masks, which, in combination with in-flight depressurization, flight deck smoke, or a smoke evacuation procedure, may lead to flightcrew hypoxia and loss of useful consciousness and consequent loss of control 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, European Union Aviation Safety Agency EASA Emergency AD 2021
0036E, dated January 25, 2021 EASA
Emergency AD 20210036E.

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$8,427

Cost per product Up to $8,682.

h Exceptions to EASA Emergency AD 2021
0036E
1 Where EASA Emergency AD 2021
0036E refers to its effective date, this AD
requires using the effective date of this AD.
2 Where paragraph 2 of EASA
Emergency AD 20210036E specifies actions if any discrepancy is detected, for this AD a discrepancy is defined as an inability to clearly hear oxygen flowing out of the mask during a functional test or see that the yellow blinker on the stowage box does not illuminate.
3 Although the service information referenced in EASA Emergency AD 2021
0036E specifies that certain actions may be accomplished by a pilot, this AD does not allow that provision.
4 The Remarks section of EASA
Emergency AD 20210036E does not apply to this AD.
i No Reporting Requirement Although the service information referenced in EASA Emergency AD 2021
0036E specifies to submit certain information to the manufacturer, this AD
does not include that requirement.
j Other FAA AD Provisions The following provisions also apply to this AD:
1 Alternative Methods of Compliance AMOCs: The Manager, Large Aircraft Section, 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 Large Aircraft Section, International Validation Branch, send it to the attention of the person identified in paragraph k of this AD.
Information may be emailed to: 9-AVS-AIR730-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, Large Aircraft Section, International Validation Branch, FAA; or EASA; or Dassault Aviations EASA Design Organization Approval DOA. If approved by the DOA, the approval must include the DOA-authorized signature.
k Related 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 and
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