[Federal Register Volume 85, Number 236 (Tuesday, December 8, 2020)]
[Proposed Rules]
[Pages 78971-78974]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-26910]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-1113; Project Identifier MCAI-2020-00893-T]
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) 
2019-03-10, which applies to all Airbus SAS Model A300 series 
airplanes; and Model A300 B4-600, B4-600R, and F4-600R series 
airplanes, and Model A300 C4-605R Variant F airplanes (collectively 
called Model A300-600 series airplanes). AD 2019-03-10 requires 
repetitive detailed visual inspections of the main landing gear (MLG) 
leg components and replacement of the MLG leg if cracked components are 
found. Since the FAA issued AD 2019-03-10, it was determined that 
additional actions (including inspections, modifications, and checks) 
are needed to address the unsafe condition. This proposed AD would 
continue to require the actions required by AD 2019-03-10. For certain 
airplanes, this proposed AD would also require modification of the MLG 
hinge arm by installing improved MLG hinge arm/barrel pins; an out-of-
roundness check of removed pins; repetitive inspections of any affected 
pins and the associated connecting rod bushes, and replacement of the 
MLG leg if cracked components are found; and installation of an 
improved spacer 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 January 22, 
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 the 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-2020-1113.

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-
1113; 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. Comments will be 
available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, Large 
Aircraft Section, International Validation Branch, FAA, 2200 South 
216th St., Des Moines, WA 98198; telephone and fax 206-231-3225; email 
dan.rodina@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 the ADDRESSES section. Include ``Docket No. FAA-2020-1113; 
Project Identifier MCAI-2020-00893-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 Dan 
Rodina, Aerospace Engineer, Large Aircraft Section, International 
Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; 
telephone and fax 206-231-3225; email dan.rodina@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.

Discussion

    The FAA issued AD 2019-03-10, Amendment 39-19562 (84 FR 5595, 
February 22, 2019) (AD 2019-03-10), which applies to all Airbus SAS 
Model A300 series airplanes; and Model A300-600 series airplanes. AD 
2019-03-10

[[Page 78972]]

requires repetitive detailed visual inspections of the MLG leg 
components and replacement of the MLG leg if cracked components are 
found. The FAA issued AD 2019-03-10 to address cracking of certain 
components in the MLG leg, which could result in an MLG collapse, and 
consequent damage to the airplane and injury to the airplane occupants.

Actions Since AD 2019-03-10 Was Issued

    Since the FAA issued AD 2019-03-10, Airbus issued instructions for 
installation of a new MLG hinge arm/barrel pin with wet primer 
integration, to improve corrosion protection. It was also determined 
that an out-of-roundness check of removed pins is needed to detect 
potential overload. Airbus also issued instructions for repetitive 
general visual inspections of affected pins and connecting rod bushes. 
Airbus also issued instructions for modification of the spacer design 
to prevent migration of the connecting rod bushes in case of bush 
fracture.
    The EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD 2020-0145, dated July 1, 2020 (EASA 
AD 2020-0145) (also referred to as the Mandatory Continuing 
Airworthiness Information, or the MCAI), to correct an unsafe condition 
for all Airbus SAS Model A300 series airplanes; Model A300-600 series 
airplanes; and Model A300F4-608ST airplanes. EASA AD 2020-0145 
supersedes EASA AD 2018-0170 (which corresponds to FAA AD 2019-03-10). 
Model A300F4-608ST airplanes are not certificated by the FAA and are 
not included on the U.S. type certificate data sheet; this proposed AD 
therefore does not include those airplanes in the applicability.
    This proposed AD was prompted by reports of cracks in MLG leg 
components, and a determination that additional actions (including 
inspections, modifications, and checks) are needed to address the 
unsafe condition. The FAA is proposing this AD to address cracking of 
certain components in the MLG leg, which could result in an MLG 
collapse, and consequent damage to the airplane and injury to the 
airplane occupants. See the MCAI for additional background information.

Explanation of Retained Requirements

    Although this proposed AD does not explicitly restate the 
requirements of AD 2019-03-10, this proposed AD would retain all of the 
requirements of AD 2019-03-10. Those requirements are referenced in 
EASA AD 2020-0145, which, in turn, is referenced in paragraph (g) of 
this proposed AD.

Related Service Information Under 1 CFR Part 51

    EASA AD 2020-0145 describes procedures for repetitive detailed 
visual inspections of the MLG leg components and replacement of the MLG 
leg if cracked components are found. EASA AD 2020-0145 also describes 
procedures, for certain airplanes, for modification of the MLG hinge 
arm by installing improved pins, which would terminate the repetitive 
detailed inspections required by AD 2019-03-10; an out-of-roundness 
check of removed pins; repetitive inspections of affected pins and the 
associated connecting rod bushes for cracking, and replacement of the 
MLG leg if cracked components are found; and installation of an 
improved spacer, which would terminate the repetitive pin and rod 
bushes inspections. EASA AD 2020-0145 also describes procedures for 
reporting results of the out-of-roundness check to Safran.
    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 
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 the actions specified 
in EASA AD 2020-0145 described previously, as incorporated by 
reference, except for any differences identified as exceptions in the 
regulatory text of this AD.

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 2020-0145 
will be incorporated by reference in the FAA final rule. This proposed 
AD would, therefore, require compliance with EASA AD 2020-0145 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 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 2020-0145 that is required for compliance with EASA AD 2020-
0145 will be available on the internet at https://www.regulations.gov 
by searching for and locating Docket No. FAA-2020-1113 after the FAA 
final rule is published.

Costs of Compliance

    The FAA estimates that this proposed AD affects 128 airplanes of 
U.S. registry. The FAA estimates the following costs to comply with 
this proposed AD:

                                     Estimated Costs for Required Actions *
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                                                                                                 Cost on U.S.
              Action                    Labor cost        Parts cost      Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Retained actions from AD           1 work-hour x $85                $0  $85, per inspection  $10,880, per
 2019[dash]03[dash]10.              per hour = $85,                      cycle.               inspection cycle.
                                    per inspection
                                    cycle.
New proposed modifications.......  180 work-hours x             17,993  33,293.............  4,261,504.
                                    $85 per hour =
                                    $15,300.

[[Page 78973]]

 
New proposed inspection..........  1 work-hour x $85                 0  85.................  10,880.
                                    per hour = $85.
New proposed out-of-roundness      4 work-hours x $85                0  340................  43,520.
 check.                             per hour = $340.
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* Table does not include estimated costs for reporting.

    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 $85, or $85 per product.

                 Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
                                                              Cost per
           Labor cost                    Parts cost            product
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20 work-hours x $85 per hour =    $3,400,000 per MLG......  $3,401,700
 $1,700 per MLG.                                             per MLG.
------------------------------------------------------------------------

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:
0
a. Removing Airworthiness Directive (AD) 2019-03-10, Amendment 39-19562 
(84 FR 5595, February 22, 2019), and
0
b. Adding the following new AD:

Airbus SAS: Docket No. FAA-2020-1113; Project Identifier MCAI-2020-
00893-T.

(a) Comments Due Date

    The FAA must receive comments by January 22, 2021.

(b) Affected Airworthiness Directives (ADs)

    This AD replaces AD 2019-03-10, Amendment 39-19562 (84 FR 5595, 
February 22, 2019) (AD 2019-03-10).

(c) Applicability

    This AD applies to all Airbus SAS airplanes, certificated in any 
category, identified in paragraphs (c)(1) through (5) of this AD.
    (1) Model A300 B2-1A, B2-1C, B2K-3C, B2-203, B4-2C, B4-103, and 
B4-203 airplanes.
    (2) Model A300 B4-601, B4-603, B4-620, and B4-622 airplanes.
    (3) Model A300 B4-605R and B4-622R airplanes.
    (4) Model A300 F4-605R and F4-622R airplanes.
    (5) Model A300 C4-605R Variant F airplanes.

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing 
Gear.

[[Page 78974]]

(e) Reason

    This AD was prompted by reports of cracks in main landing gear 
(MLG) leg components, and a determination that additional actions 
(including inspections, modifications, and out-of-roundness checks) 
are needed to address the unsafe condition. The FAA is issuing this 
AD to address cracking of certain components in the MLG leg, which 
could result in an MLG collapse, and consequent damage to the 
airplane and injury to the airplane occupant.

(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 
2020-0145, dated July 1, 2020 (EASA AD 2020-0145).

(h) Exceptions to EASA AD 2020-0145

    (1) Where EASA AD 2020-0145 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) Where EASA AD 2020-0145 refers to the effective date of EASA 
AD 2018-0170, this AD requires using March 29, 2019 (the effective 
date of AD 2019-03-10).
    (3) The ``Remarks'' section of EASA AD 2020-0145 does not apply 
to this AD.
    (4) Paragraph (3) of EASA AD 2020-0145 specifies to ``send all 
removed pins for an out-of-roundness check.'' For this AD, do an 
inspection of each pin for out-of-roundness, in accordance with the 
service information specified in EASA AD 2020-0145.
    (5) Paragraph (3) of EASA AD 2020-0145 specifies to report 
inspection results to Safran within a certain compliance time. For 
this AD, report inspection results at the applicable time specified 
in paragraph (h)(5)(i) or (ii) of this AD.
    (i) If the inspection was done on or after the effective date of 
this AD: Submit the report within 30 days after the inspection.
    (ii) If the inspection was done before the effective date of 
this AD: Submit the report within 30 days after the effective date 
of 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)(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 
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 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 2020-0145 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. 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 2020-0145, contact the 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-
2020-1113.
    (2) For more information about this AD, contact Dan Rodina, 
Aerospace Engineer, Large Aircraft Section, International Validation 
Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 
and fax 206-231-3225; email dan.rodina@faa.gov.

    Issued on December 2, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-26910 Filed 12-7-20; 8:45 am]
BILLING CODE 4910-13-P


