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Federal Register / Vol. 86, No. 166 / Tuesday, August 31, 2021 / Rules and Regulations
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210128; Project Identifier MCAI202001406T; Amendment 3921687; AD 20211704
RIN 2120AA64

Airworthiness Directives; Airbus SAS
Airplanes Federal Aviation Administration FAA, Department of Transportation DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Airbus SAS Model A321211, 231, and 232 airplanes. This AD was prompted by a report of false drill starts found around the latch hook mounting holes of certain door frames of the fuselage due to erroneous manufacturing processes. This AD requires a one-time inspection of the area around the latch hook mounting holes of the forward and aft door frames to detect damage from false drill starts, and repair if necessary, 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 October 5, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of October 5, 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 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 2062313195.
It is also available in the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0128.

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SUMMARY:

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. FAA2021
0128; or in person at Docket Operations
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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 W12140, 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 2062313223; email Sanjay.Ralhan@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20200222, dated October 14, 2020 EASA AD
20200222 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for certain Airbus SAS
Model A321211, 231, and 232
airplanes.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Airbus SAS Model A321211, 231, and 232 airplanes.
The NPRM published in the Federal Register on March 8, 2021 86 FR
13229. The NPRM was prompted by a report of false drill starts found around the latch hook mounting holes of certain door frames of the fuselage due to erroneous manufacturing processes. The NPRM proposed to require a one-time inspection of the area around the latch hook mounting holes of the forward and aft door frames to detect damage from false drill starts, and repair if necessary, as specified in EASA AD 20200222.
The FAA is issuing this AD to address damage from false drill starts, which could result in reduced structural integrity 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 following presents the comment received on the NPRM and the FAAs response.
Request To Add Exceptions Delta Air Lines DAL asked that the FAA add an exception to paragraph h of the proposed AD as follows: 1
Require inspections and corrective action, if applicable, on all airplanes having manufacturer serial numbers MSNs identified in the applicability,
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regardless of affected part numbers referenced in EASA AD 20200222; or 2 Add a clarification that if affected parts are not found, no inspection is required where a frame replacement has occurred on an affected frame location, and the potential manufacturing defect has been removed because there would be a new part number designation for the spliced area and the airplane could be considered as no longer be affected.
The FAA does not agree with the commenters request. EASA AD 2020
0222 is applicable to specific airplane MSNs, with an assertion that the current configuration continues to be installed with the part numbers that are described in EASA AD 20200222 as affected part numbers. The FAA does not have any information provided by EASA that there are potential configurations that have EASA-approved modifications that are exempt from the unsafe condition. If the MSN configuration DAL referred to does not include those affected part numbers, then there is no corresponding action for those airplanes, in accordance with the requirements in this AD. The FAA has not changed this AD in this regard.
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 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 20200222 describes procedures for a one-time detailed inspection of the area around the latch hook mounting holes of the forward and aft door frames to detect damage from false drill starts, and repair of any damage found. 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 21 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD:

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