Airworthiness Directives; Airbus SAS Airplanes
| Published date | 01 May 2020 |
| Citation | 85 FR 25345 |
| Record Number | 2020-09140 |
| Section | Proposed rules |
| Court | Federal Aviation Administration |
Federal Register, Volume 85 Issue 85 (Friday, May 1, 2020)
[Federal Register Volume 85, Number 85 (Friday, May 1, 2020)]
[Proposed Rules]
[Pages 25345-25348]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-09140]
[[Page 25345]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2020-0343; Product Identifier 2019-NM-206-AD]
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)
2018-17-05, which applies to all Airbus SAS Model A350-941 and -1041
airplanes. AD 2018-17-05 requires a check of the insulation resistance
of the direct drive solenoid valve (DDSOV) of each affected electro-
hydrostatic actuator (EHA) and applicable corrective actions. Since the
FAA issued AD 2018-17-05, it has been determined that certain EHA part
numbers can be modified and re-identified as specified in European
Union Aviation Safety Agency (EASA) AD 2019-0301, dated December 12,
2019, which would inadvertently remove certain part numbers from the
applicability in other EHA-related ADs. This proposed AD would require
a check of the insulation resistance of the DDSOV of each affected EHA
and applicable corrective actions, and modifying or replacing certain
EHAs, as specified in two EASA ADs, which will be incorporated 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 June 15,
2020.
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: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For the material identified in this proposed AD that will be
incorporated by reference (IBR), contact the EASA, Konrad-Adenauer-Ufer
3, 50668 Cologne, Germany; telephone +49 221 89990 1000; email
[email protected]; 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-2020-0343.
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-2020-
0343; 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 regulatory evaluation, any comments received, and other
information. The street address for Docket Operations is listed above.
Comments will be available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Kathleen Arrigotti, Aerospace
Engineer, Large Aircraft Section, International Validation Branch, FAA,
2200 South 216th St., Des Moines, WA 98198; telephone and fax 206-231-
3218; [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 the ADDRESSES section. Include ``Docket No. FAA-2020-0343;
Product Identifier 2019-NM-206-AD'' at the beginning of your comments.
The FAA specifically invites comments on the overall regulatory,
economic, environmental, and energy aspects of this NPRM. The FAA will
consider all comments received by the closing date and may amend this
NPRM based on those comments.
The FAA will post all comments received, without change, to https://www.regulations.gov, including any personal information you provide.
The FAA will also post a report summarizing each substantive verbal
contact we receive about this NPRM.
Discussion
The FAA issued AD 2018-17-05, Amendment 39-19359 (83 FR 40438,
August 15, 2018) (``AD 2018-17-05''), which applied to all Airbus SAS
Model A350-941 and -1041 airplanes. AD 2018-17-05 requires a check of
the insulation resistance of the DDSOV of each affected EHA and
applicable corrective actions. The FAA issued AD 2018-17-05 to address
degraded insulation resistance in the DDSOV, due to incorrect sealing
application, which could lead to the DDSOV being unable to command or
maintain the EHA in active mode, possibly resulting in reduced control
of the airplane.
Actions Since AD 2018-17-05 Was Issued
Since AD 2018-17-05 was issued, it has been determined that certain
EHA part numbers can be modified and re-identified as described in EASA
AD 2019-0301, dated December 12, 2019 (``EASA 2019-0301''), which would
inadvertently remove certain part numbers from the applicability in
other EHA-related ADs. Therefore, EASA issued AD 2020-0027R1, dated
February 21, 2020 (``EASA AD 2020-0027R1''), to revise the definition
of an affected EHA.
The EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2019-0301 and EASA AD 2020-0027R1
(these ADs are also referred to as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for all Airbus SAS Model A350-941 and -1041 airplanes. EASA
AD 2020-0027R1 supersedes EASA AD 2018-0141, dated July 3, 2018 (which
corresponds to FAA AD 2018-17-05).
In addition to the determination that certain EHA part numbers
might have been inadvertently removed from the actions required by AD
2018-17-05, this proposed AD was prompted by reports of EHA units that
were returned to the manufacturer with degraded insulation resistance
in the DDSOV; investigation results revealed that moisture ingress, due
to incorrect sealing application, had caused this degradation. This AD
was also prompted by a report of a technical issue detected on EHAs
installed on inboard ailerons and elevators, causing potential
erroneous monitoring of those actuators. The FAA is proposing this AD
to address degraded insulation resistance, which could lead to the
DDSOV being unable to command or maintain the EHA in active mode, and
possibly result in reduced control of the
[[Page 25346]]
airplane. The FAA is also proposing this AD to address the possibility
of an in-flight loss of inboard aileron or elevator control, which, due
to the resulting drag, would lead to increased fuel consumption, and
when combined with one engine inoperative, could result in reduced
control of the airplane. See the MCAI for additional background
information.
Related IBR Material Under 1 CFR Part 51
EASA AD 2019-0301 describes, among other actions, procedures for
modifying or replacing affected EHAs. In addition, EASA AD 2020-0027R1
describes procedures for a check of the insulation resistance of the
DDSOV of each affected EHA (installed on inboard ailerons, elevators,
and rudder) and applicable corrective actions (replacing or
reidentifying the affected EHA). 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 a 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 agency
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 accomplishing certain actions
specified in EASA AD 2019-0301 and the actions specified in EASA AD
2020-0027R1, described previously, as incorporated by reference, except
for any differences identified as exceptions in the regulatory text of
this AD and except as discussed under ``Differences Between this
Proposed AD and the MCAI.''
Explanation of Required Compliance Information
In the FAA's ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a
process to use certain EASA ADs as the primary source of information
for compliance with requirements for corresponding FAA ADs. The FAA has
since coordinated with other manufacturers and civil aviation
authorities (CAAs) to use this process. As a result, EASA AD 2019-0301
and EASA AD 2020-0027R1 will be incorporated by reference in the FAA
final rule. This proposed AD would, therefore, require compliance with
EASA AD 2019-0301 and EASA AD 2020-0027R1 in their 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 the EASA AD 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
the EASA AD. Service information specified in EASA AD 2019-0301 and
EASA AD 2020-0027R1 that is required for compliance with EASA AD 2019-
0301 and EASA AD 2020-0027R1 will be available on the internet at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2020-0343 after the FAA final rule is published.
Differences Between This Proposed AD and the MCAI
EASA AD 2019-0301 requires the accomplishment of paragraphs (1)
through (6). However, this AD only requires the accomplishment of
paragraphs (5) and (6) of EASA AD 2019-0301. Paragraphs (1) through (4)
of EASA AD 2019-0301 are addressed in FAA AD 2019-16-08, Amendment 39-
19711 (84 FR 51957, October 1, 2019), which requires revising the
airplane flight manual (AFM) to provide the flightcrew with updated
procedures related to inboard aileron fault operations, and also
requires modification of the electronic centralized aircraft monitoring
(ECAM) procedures by installing an Airbus temporary quick change (ATQC)
and activating an ECAM temporary change.
Clarification of a Definition in EASA AD 2020-0027R1
For EASA AD 2020-0027R1, all serial numbers listed in the
``applicable SB'' are included in the definition of ``affected EHA''
regardless of the associated part numbers that are also listed in the
``applicable SB.''
Costs of Compliance
The FAA estimates that this proposed AD affects 13 airplanes of
U.S. registry. The FAA estimates the following costs to comply with
this proposed AD:
Estimated Costs for Required Actions *
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
New proposed actions............. Up to 28 work-hours ** $0 Up to $2,380....... Up to $30,940.
x $85 per hour =
$2,380.
----------------------------------------------------------------------------------------------------------------
* Table does not include estimated costs for reporting.
** The FAA has received no definitive date on the parts cost for the modification or replacement specified in
this proposed AD.
The FAA estimates that it would take about 1 work-hour per product
to comply with the proposed reporting requirement in this proposed AD.
The average labor rate is $85 per hour. Based on these figures, the FAA
estimates the cost of reporting the inspection results on U.S.
operators to be $1,105, or $85 per product.
The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of any
required actions. The FAA has no way of determining the number of
aircraft that might need these on-condition actions:
Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
Labor cost Parts cost Cost per product
------------------------------------------------------------------------
Up to 28 work-hours x $85 per Up to $518,314.... Up to $520,694.
hour = $2,380.
------------------------------------------------------------------------
[[Page 25347]]
Paperwork Reduction Act
A federal agency may not conduct or sponsor, and a person is not
required to respond to, nor shall a person be subject to penalty for
failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of
information displays a current valid OMB control number. The control
number for the collection of information required by this proposed AD
is 2120-0056. The paperwork cost associated with this proposed AD has
been detailed in the Costs of Compliance section of this document and
includes time for reviewing instructions, as well as completing and
reviewing the collection of information. Therefore, all reporting
associated with this proposed AD is mandatory. Comments concerning the
accuracy of this burden and suggestions for reducing the burden should
be directed to Information Collection Clearance Officer, Federal
Aviation Administration, 10101 Hillwood Parkway, Fort Worth, TX 76177-
1524.
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) 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 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 removing Airworthiness Directive (AD)
2018-17-05, Amendment 39-19359 (83 FR 40438, August 15, 2018), and
adding the following new AD:
Airbus SAS: Docket No. FAA-2020-0343; Product Identifier 2019-NM-
206-AD.
(a) Comments Due Date
We must receive comments by June 15, 2020.
(b) Affected ADs
This AD replaces AD 2018-17-05, Amendment 39-19359 (83 FR 40438,
August 15, 2018) (``AD 2018-17-05'').
(c) Applicability
This AD applies to all Airbus SAS Model A350-941 and -1041
airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
controls.
(e) Reason
This AD was prompted by reports of electro-hydrostatic actuator
(EHA) units that were returned to the manufacturer with degraded
insulation resistance in the direct drive solenoid valve (DDSOV);
investigation results revealed that moisture ingress, due to
incorrect sealing application, had caused this degradation. This AD
was also prompted by a report of a technical issue detected on EHAs
installed on inboard ailerons and elevators, causing potential
erroneous monitoring of those actuators. The FAA is issuing this AD
to address degraded insulation resistance, which could lead to the
DDSOV being unable to command or maintain the EHA in active mode,
and possibly result in reduced control of the airplane. The FAA is
also issuing this AD to address the possibility of an in-flight loss
of inboard aileron or elevator control, which, due to the resulting
drag, would lead to increased fuel consumption, and when combined
with one engine inoperative, could result in reduced 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) AD
2020-0027R1, dated February 21, 2020 (``EASA AD 2020-0027R1'') and
EASA AD 2019-0301, dated December 12, 2019 (``EASA AD 2019-0301'').
(h) Exceptions and Clarifications to EASA AD 2019-0301 and EASA AD
2020-0027R1
(1) Where EASA AD 2019-0301 and EASA AD 2020-0027R1 refer to
their effective date, this AD requires using the effective date of
this AD.
(2) The ``Remarks'' section of EASA AD 2019-0301 and EASA AD
2020-0027R1 do not apply to this AD.
(3) Where EASA AD 2019-0301 requires the accomplishment of
paragraphs (1) through (6), this AD only requires the accomplishment
of paragraphs (5) and (6).
(4) Paragraph (6) of EASA AD 2020-0027R1 specifies to report
insulation check results (e.g., results of the detailed inspection
of the insulation resistance) to Airbus within a certain compliance
time. For this AD, report inspection results at the applicable time
specified in paragraph (h)(4)(i) or (ii) of this AD.
(i) If the insulation check was done on or after the effective
date of this AD: Submit the report within 30 days after the
insulation check.
(ii) If the insulation check was done before the effective date
of this AD: Submit the report within 30 days after the effective
date of this AD.
(5) EASA AD 2020-0027R1 includes a definition for ``affected
EHA'' that specifies ``as listed by serial number in the applicable
SB.'' All serial numbers listed in the ``applicable SB'' are
included in the definition of ``affected EHA'' regardless of the
associated part numbers that are also listed in the ``applicable
SB.''
(6) For any service information referenced in EASA AD EASA AD
2019-0301 that specifies to return parts to the manufacturer, that
action is not required by this AD.
(i) 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 International Section, send it to the attention of
the person
[[Page 25348]]
identified in paragraph (j)(2) of this AD. Information may be
emailed to: [email protected].
(i) 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.
(ii) AMOCs approved previously for AD 2018-17-05, Amendment 39-
19359 (83 FR 40438, August 15, 2018), are approved as AMOCs for the
corresponding provisions of EASA AD 2020-0027 R1 that are required
by paragraph (g) of this AD.
(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): For any service information
referenced in EASA AD 2020-0027R1 and paragraphs (5) and (6) of EASA
AD 2019-0301 that contains RC procedures and tests: Except as
required by paragraph (i)(2) of this AD, RC 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.
(4) Paperwork Reduction Act Burden Statement: A federal agency
may not conduct or sponsor, and a person is not required to respond
to, nor shall a person be subject to a penalty for failure to comply
with a collection of information subject to the requirements of the
Paperwork Reduction Act unless that collection of information
displays a current valid OMB Control Number. The OMB Control Number
for this information collection is 2120-0056. Public reporting for
this collection of information is estimated to be approximately 1
hour per response, including the time for reviewing instructions,
searching existing data sources, gathering and maintaining the data
needed, and completing and reviewing the collection of information.
All responses to this collection of information are mandatory as
required by this AD; the nature and extent of confidentiality to be
provided, if any. Send comments regarding this burden estimate or
any other aspect of this collection of information, including
suggestions for reducing this burden to Information Collection
Clearance Officer, Federal Aviation Administration, 10101 Hillwood
Parkway, Fort Worth, TX 76177-1524.
(j) Related Information
(1) For information about EASA AD 2020-0027R1 and EASA AD 2019-
0301, contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne,
Germany; telephone +49 221 89990 6017; email [email protected];
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-
2020-0343.
(2) For more information about this AD, contact Kathleen
Arrigotti, Aerospace Engineer, Large Aircraft Section, International
Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198;
telephone and fax 206-231-3218; [email protected].
Issued on April 23, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2020-09140 Filed 4-30-20; 8:45 am]
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