Airworthiness Directives; Airbus SAS Airplanes
| Published date | 19 August 2021 |
| Citation | 86 FR 46626 |
| Record Number | 2021-17679 |
| Section | Proposed rules |
| Court | Federal Aviation Administration |
46626
Federal Register / Vol. 86, No. 158 / Thursday, August 19, 2021 / Proposed Rules
directly to part of the bulb surface that
reflects light toward the lamp base and
that is designed and marketed as a silver
bowl lamp.
* * * * *
Specialty MR lamp means a lamp that
has an MR shape as defined in ANSI
C79.1–2002 (incorporated by reference;
see § 430.3), a diameter of less than or
equal to 2.25 inches, a lifetime of less
than or equal to 300 hours, and that is
designed and marketed for a specialty
application.
* * * * *
Traffic signal lamp means a lamp that
is designed and marketed for traffic
signal applications and has a lifetime of
8,000 hours or greater.
* * * * *
[FR Doc. 2021–17346 Filed 8–18–21; 8:45 am]
BILLING CODE 6450–01–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0682; Project
Identifier MCAI–2021–00474–T]
RIN 2120–AA64
Airworthiness Directives; Airbus SAS
Airplanes
AGENCY
: Federal Aviation
Administration (FAA), DOT.
ACTION
: Notice of proposed rulemaking
(NPRM).
SUMMARY
: The FAA proposes to adopt a
new airworthiness directive (AD) for
certain Airbus SAS Model A318 series
airplanes; Model A319–111, –112, –113,
–114, –115, –131, –132, –133, –151N,
and –153N airplanes; and Models A320
and A321 series airplanes. This
proposed AD was prompted by a
determination 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.
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 October 4, 2021.
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
https://www.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.
For material that will be incorporated
by reference (IBR) in this AD, contact
EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221
8999 000; email ADs@easa.europa.eu;
internet www.easa.europa.eu. You may
find this IBR material on the EASA
website at https://ad.easa.europa.eu.
You may view this IBR 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 on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0682.
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0682; 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, any
comments received, and other
information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT
:
Sanjay Ralhan, Aerospace Engineer,
Large Aircraft Section, International
Validation Branch, FAA, 2200 South
216th St., Des Moines, WA 98198;
telephone and fax 206–231–3223; email
sanjay.ralhan@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–2021–0682; Project Identifier
MCAI–2021–00474–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 the 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 https://
www.regulations.gov, including any
personal information you provide. The
agency will also post a report
summarizing each substantive verbal
contact received about this proposed
AD.
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 Sanjay Ralhan,
Aerospace Engineer, Large Aircraft
Section, International Validation
Branch, FAA, 2200 South 216th St., Des
Moines, WA 98198; telephone and fax
206–231–3223; email sanjay.ralhan@
faa.gov. Any commentary that the FAA
receives which is not specifically
designated as CBI will be placed in the
public docket for this rulemaking.
Background
EASA, which is the Technical Agent
for the Member States of the European
Union, has issued EASA AD 2021–0108,
dated April 20, 2021 (EASA AD 2021–
0108) (also referred to as the Mandatory
Continuing Airworthiness Information,
or the MCAI), to correct an unsafe
condition for all Airbus SAS Model
A318–111, –112, –121, and –122
airplanes; Model A319–111, –112, –113,
–114, –115, –131, –132, –133, –151N,
and –153N airplanes; Model A320–211,
–212, –214, –215, –216, –231, –232,
–233, –251N, –252N, –253N, –271N,
–272N, and –273N airplanes; and Model
A321–111, –112, –131, –211, –212,
–213, –231, –232, –251N, –252N,
–253N, –271N, –272N, –251NX,
–252NX, –253NX, –271NX, and –272NX
airplanes. Model A320–215 airplanes
are not certificated by the FAA and are
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Federal Register / Vol. 86, No. 158 / Thursday, August 19, 2021 / Proposed Rules
not included on the U.S. type certificate
data sheet; this AD therefore does not
include those airplanes in the
applicability. Airplanes with an original
airworthiness certificate or original
export certificate of airworthiness
issued after December 9, 2020 must
comply with the airworthiness
limitations specified as part of the
approved type design and referenced on
the type certificate data sheet; this AD
therefore does not include those
airplanes in the applicability.
EASA AD 2021–0108 specifies that it
requires a task (limitation) already
required by EASA AD 2020–0067
(which corresponds to FAA AD 2020–
22–16, Amendment 39–21312 (85 FR
70439, November 5, 2020) (AD 2020–
22–16)) and invalidates (terminates)
prior instructions for that task. This
proposed AD would terminate the
limitations of Task 262300–00001–1–C,
as required by paragraph (i) of AD 2020–
22–16, for airplanes with an original
airworthiness certificate or original
export certificate of airworthiness
issued on or before January 17, 2020
only.
This proposed AD was prompted by
a determination that new or more
restrictive airworthiness limitations are
necessary. The FAA is proposing this
AD to address a safety-significant latent
failure (that is not annunciated), which,
in combination with one or more other
specific failures or events, could result
in a hazardous or catastrophic failure
condition. See the MCAI for additional
background information.
Related Service information Under 1
CFR Part 51
EASA AD 2021–0108 describes new
or more restrictive airworthiness
limitations for certification maintenance
requirements. 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 and Requirements
of This Proposed AD
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, the FAA has been
notified of the unsafe condition
described in the MCAI referenced
above. The FAA is proposing this AD
because the FAA has evaluated all
pertinent information and determined
an unsafe condition exists and is likely
to exist or develop on other products of
the same type design.
Proposed AD Requirements
This proposed AD would require
revising the existing maintenance or
inspection program, as applicable, to
incorporate new or more restrictive
airworthiness limitations, which are
specified in EASA AD 2021–0108
described previously, as incorporated by
reference. Any differences with EASA
AD 2021–0108 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 according to
paragraph (k)(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 2021–0108 by
reference in the FAA final rule. This
proposed AD would, therefore, require
compliance with EASA AD 2021–0108
in its entirety 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 2021–0108 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 2021–0108.
Service information required by EASA
AD 2021–0108 for compliance will be
available at https://www.regulations.gov
by searching for and locating Docket No.
FAA–2021–0682 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
alternative method of compliance
(AMOC) in accordance with the
procedures specified in the AMOCs
paragraph under ‘‘Other FAA
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 proposed
AD affects 1,728 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
is more accurate than a per-airplane
estimate. Therefore, the agency
estimates the average total cost per
operator to be $7,650 (90 work-hours ×
$85 per work-hour).
Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
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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 has 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.
§ 39.13 [Amended]
■2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
Airbus SAS: Docket No. FAA–2021–0682;
Project Identifier MCAI–2021–00474–T.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by October 4,
2021.
(b) Affected ADs
This AD affects AD 2020–22–16,
Amendment 39–21312 (85 FR 70439,
November 5, 2020) (AD 2020–22–16).
(c) Applicability
This AD applies to the Airbus SAS
airplanes specified in paragraphs (c)(1)
through (4) of this AD, certificated in any
category, with an original airworthiness
certificate or original export certificate of
airworthiness issued on or before December
9, 2020.
(1) Model A318–111, –112, –121, and –122
airplanes.
(2) Model A319–111, –112, –113, –114,
–115, –131, –132, –133, –151N, and –153N
airplanes.
(3) Model A320–211, –212, –214, –216,
–231, –232, –233, –251N, –252N, –253N,
–271N, –272N, and –273N airplanes.
(4) Model A321–111, –112, –131, –211,
–212, –213, –231, –232, –251N, –252N,
–253N, –271N, –272N, –251NX, –252NX,
–253NX, –271NX, and –272NX airplanes.
(d) Subject
Air Transport Association (ATA) of
America Code 05, Time Limits/Maintenance
Checks.
(e) Reason
This AD was prompted by a determination
that new or more restrictive airworthiness
limitations are necessary. The FAA is issuing
this AD to address a safety-significant latent
failure (that is not annunciated), which, in
combination with one or more other specific
failures or events, could result in a hazardous
or catastrophic failure condition.
(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) AD 2021–0108, dated
April 20, 2021 (EASA AD 2021–0108).
(h) Exceptions to EASA AD 2021–0108
(1) Where EASA AD 2021–0108 refers to its
effective date, this AD requires using the
effective date of this AD.
(2) The requirements specified in
paragraphs (1) and (2) of EASA AD 2021–
0108 do not apply to this AD.
(3) Paragraph (3) of EASA AD 2021–0108
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.
(4) The initial compliance time for doing
the tasks specified in paragraph (3) of EASA
2021–0108 is at the applicable ‘‘thresholds’’
as incorporated by the requirements of
paragraph (3) of EASA AD 2021–0108, or
within 90 days after the effective date of this
AD, whichever occurs later.
(5) The provisions specified in paragraphs
(4) of EASA AD 2021–0108 do not apply to
this AD.
(6) The ‘‘Remarks’’ section of EASA AD
2021–0108 does not apply to this AD.
(i) Provisions for Alternative Actions and
Intervals
After the existing maintenance or
inspection program has been revised as
required by paragraph (g) 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
2021–0108.
(j) Terminating Action for Certain
Requirements in AD 2020–22–16
Accomplishing the actions required by this
AD terminates the limitations of Task
262300–00001–1–C, as required by paragraph
(i) of AD 2020–22–16, for airplanes with an
original airworthiness certificate or original
export certificate of airworthiness issued on
or before January 17, 2020 only.
(k) 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 local Flight Standards
District 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 (l)(2) 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 local flight
standards district office/certificate holding
district 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 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 (k)(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
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Federal Register / Vol. 86, No. 158 / Thursday, August 19, 2021 / Proposed Rules
an airworthy condition. Any substitutions or
changes to procedures or tests identified as
RC require approval of an AMOC.
(l) Related Information
(1) For information about EASA AD 2021–
0108, contact EASA, Konrad-Adenauer-Ufer
3, 50668 Cologne, Germany; telephone +49
221 8999 000; email ADs@easa.europa.eu;
internet www.easa.europa.eu. You may find
this EASA AD on the EASA website at
https://ad.easa.europa.eu. 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. This
material may be found in the AD docket on
the internet at https://www.regulations.gov
by searching for and locating Docket No.
FAA–2021–0682.
(2) For more information about this AD,
contact Sanjay Ralhan, Aerospace Engineer,
Large Aircraft Section, International
Validation Branch, FAA, 2200 South 216th
St., Des Moines, WA 98198; telephone and
fax 206–231–3223; email sanjay.ralhan@
faa.gov.
Issued on August 12, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–17679 Filed 8–18–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0684; Project
Identifier MCAI–2021–00194–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 adopt a
new airworthiness directive (AD) for
certain Dassault Aviation Model
FALCON 7X, FALCON 900EX, and
FALCON 2000EX airplanes. This
proposed AD was prompted by a report
of an improper heat treatment process
applied during the manufacturing of
certain titanium screws. This proposed
AD would require replacement of
certain titanium screws, as specified in
a European Union Aviation Safety
Agency (EASA) AD, which is proposed
for incorporation by reference. 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 October 4, 2021.
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
https://www.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.
For EASA material that will be
incorporated by reference (IBR) in this
AD, contact EASA, Konrad-Adenauer-
Ufer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email
ADs@easa.europa.eu; internet
www.easa.europa.eu. You may find this
IBR material on the EASA website at
https://ad.easa.europa.eu. You may
view this IBR 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 on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0684.
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0684; 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, any
comments received, and other
information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT
: Tom
Rodriguez, Aerospace Engineer, Large
Aircraft Section, International
Validation Branch, FAA, 2200 South
216th St., Des Moines, WA 98198;
telephone and fax 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–2021–0684; Project Identifier
MCAI–2021–00194–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 the 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 https://
www.regulations.gov, including any
personal information you provide. The
agency will also post a report
summarizing each substantive verbal
contact received about this proposed
AD.
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 and fax
206–231–3226; email tom.rodriguez@
faa.gov. Any commentary that the FAA
receives which is not specifically
designated as CBI will be placed in the
public docket for this rulemaking.
Background
EASA, which is the Technical Agent
for the Member States of the European
Union, has issued EASA AD 2021–0047,
dated February 16, 2021 (EASA AD
2021–0047) (also referred to as the
Mandatory Continuing Airworthiness
Information, or the MCAI), to correct an
unsafe condition for certain Dassault
Aviation Model FALCON 7X, FALCON
900EX, and FALCON 2000EX airplanes.
This proposed AD was prompted by
a report of an improper heat treatment
process applied during the
manufacturing of certain Decomatic
titanium screws. The improper heat
treatment process led to a hydrogen
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lotter on DSK11XQN23PROD with PROPOSALS1
