[Federal Register Volume 86, Number 106 (Friday, June 4, 2021)]
[Rules and Regulations]
[Pages 29944-29946]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-11726]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0028; Project Identifier MCAI-2020-01516-T;
Amendment 39-21533; AD 2021-09-19]
RIN 2120-AA64
Airworthiness Directives; Airbus SAS Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
Airbus SAS Model A319-171N airplanes, Model A320-271N, -272N, and -273N
airplanes, and Model A321-271N, -272N, -271NX, and -272NX airplanes.
This AD was prompted by a report indicating that during a full scale
fatigue test of the forward engine mounts, premature wear was
identified on the forward engine mount shackle assemblies; in addition,
during bearing replacement, the bearing lock washer was found broken.
This AD requires replacing any forward engine mount shackle assemblies
having a certain part number with a serviceable part, and re-
identifying the engine mount, or replacing any forward engine mount
assemblies having a certain part number, as specified in a European
Union Aviation Safety Agency (EASA) AD, which is incorporated by
reference. The FAA is issuing this AD to address the unsafe condition
on these products.
DATES: This AD is effective July 9, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of July 9,
2021.
ADDRESSES: For material incorporated by reference (IBR) in this AD,
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone
+49 221 8999 000; 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 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. It is also
available on the internet at https://www.regulations.gov by searching
for and locating Docket No. FAA-2021-0028.
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-
0028; 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 final rule, any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.
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 [email protected].
SUPPLEMENTARY INFORMATION:
Background
The EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2020-0250, dated November 11, 2020
(EASA AD 2020-0250) (also referred to as the Mandatory Continuing
Airworthiness Information, or the MCAI), to correct an unsafe condition
for all Airbus SAS Model A319-171N airplanes, Model A320-271N, -272N,
and -273N airplanes, and Model A321-271N, -272N, -271NX, and -272NX
airplanes.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to all Airbus SAS Model
A319-171N airplanes, Model A320-271N, -272N, and -273N airplanes, and
Model A321-271N, -272N, -271NX, and -272NX airplanes. The NPRM
published in the Federal Register on February 24, 2021 (86 FR 11156).
The NPRM was prompted by a report indicating that during a full scale
fatigue test of the forward engine mounts, premature wear was
identified on the forward engine mount shackle assemblies; in addition,
during bearing replacement, the bearing lock washer was found broken.
The NPRM proposed to require replacing any forward engine mount shackle
assemblies having a certain part number with a serviceable part, and
re-identifying the engine mount, or replacing any forward engine mount
assemblies having a certain part number, as specified in EASA AD 2020-
0250.
The FAA is issuing this AD to address premature wear and broken
bearing lock washers at the forward engine mounts, which could lead to
overload of the forward engine mount beams and engine mount failure,
with consequent in-flight engine detachment, and possibly result in
reduced controllability of the airplane. See the MCAI for additional
background information.
Comments
The FAA gave the public the opportunity to participate in
developing this final rule. The FAA has considered the comment
received. The Air Line Pilots Association, International (ALPA)
indicated its support for the NPRM.
Conclusion
The FAA reviewed the relevant data, considered the comment
received, and determined that air safety and the public interest
require adopting this final rule as proposed, except for minor
editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
[[Page 29945]]
Do not add any additional burden upon the public than was
already proposed in the NPRM.
Related Service Information Under 1 CFR Part 51
EASA AD 2020-0250 describes procedures for replacing any forward
engine mount shackle assemblies having part number D7121513500xxx
(`xxx' can be any numerical value) with a serviceable part, and re-
identifying the engine mount, or replacing any forward engine mount
assemblies having part number D7121506500xxx (`xxx' can be any
numerical value) and fitted with an affected engine mount shackle
assembly. 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.
Costs of Compliance
The FAA estimates that this AD affects 70 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
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Labor cost Parts cost Cost per product Cost on U.S. operators
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5 work-hours x $85 per hour = $425. Up to $75,360........................ Up to $75,785........................ Up to $5,304,950.
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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 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
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,
(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.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 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 adding the following new airworthiness
directive:
2021-09-19 Airbus SAS: Amendment 39-21533; Docket No. FAA-2021-0028;
Project Identifier MCAI-2020-01516-T.
(a) Effective Date
This airworthiness directive (AD) is effective July 9, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Airbus SAS Model A319-171N airplanes,
Model A320-271N, -272N, and -273N airplanes, and Model A321-271N, -
272N, -271NX, and -272NX airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 71, Powerplant.
(e) Reason
This AD was prompted by a report indicating that during a full
scale fatigue test of the forward engine mounts, premature wear was
identified on the forward engine mount shackle assemblies; in
addition, during bearing replacement, the bearing lock washer was
found broken. The FAA is issuing this AD to address premature wear
and broken bearing lock washers at the forward engine mounts, which
could lead to overload of the forward engine mount beams and engine
mount failure, with consequent in-flight engine detachment, and
possibly result in reduced controllability 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
2020-0250, dated November 11, 2020 (EASA AD 2020-0250).
(h) Exceptions to EASA AD 2020-0250
(1) Where EASA AD 2020-0250 refers to its effective date, this
AD requires using the effective date of this AD.
(2) The ``Remarks'' section of EASA AD 2020-0250 does not apply
to 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 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 (j) 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.
[[Page 29946]]
(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 (i)(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.
(j) Related Information
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 [email protected].
(k) 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.
(i) European Union Aviation Safety Agency (EASA) AD 2020-0250,
dated November 11, 2020.
(ii) [Reserved]
(3) For EASA AD 2020-0250, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; telephone +49 221 8999 000; email
[email protected]; internet www.easa.europa.eu. You may find this
EASA AD on the EASA website at https://ad.easa.europa.eu.
(4) 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-2021-0028.
(5) You may view this material that is incorporated by reference
at the National Archives and Records Administration (NARA). For
information on the availability of this material at NARA, email
[email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on April 23, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-11726 Filed 6-3-21; 8:45 am]
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