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Federal Register / Vol. 86, No. 213 / Monday, November 8, 2021 / Rules and Regulations
2062313223; 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 The FAA issued AD 20211808, Amendment 3921709 86 FR 48296, August 30, 2021 AD 20211808, which applied to all Airbus SAS Model A319171N airplanes; Model A320
271N, 272N, and 273N airplanes; and Model A321271N, 272N, 271NX, and 272NX airplanes. AD 20211808
required repetitive inspections of the pylon/engine interface rods for damage, and applicable corrective actions, as specified in EASA AD 20210177, dated July 23, 2021 EASA AD 20210177.
AD 20211808 also provided for limited installation of affected parts under certain conditions. The FAA
issued AD 20211808 to address damage that could lead to rupture of the rod-eye ends, which could result in fuel and hydraulic pipe chafing, consequent fuel or hydraulic leakage, and possible fire.

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Actions Since AD 20211808 Was Issued Since the FAA issued AD 202118
08, operators reported that the requirements of EASA AD 20210177
were unclear.
EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2021
0177R1, dated September 21, 2021
EASA AD 20210177R1 also referred to as the MCAI, to correct an unsafe condition for all Airbus SAS Model A319171N, A320271N, A320272N, A320273N, A321271N, A321272N, A321271NX, and A321272NX
airplanes. EASA AD 20210177R1
revised EASA AD 20210177, dated July 23, 2021 which corresponded to FAA
AD 20211808, to clarify the requirements.
This AD was prompted by a report of damage found at the rod-eye ends of two original rods installed to maintain an interface plate between the pylon and nacelle, and the need to clarify certain existing requirements. The FAA is issuing this AD to address damage that could lead to rupture of the rod-eye ends, which could result in fuel and hydraulic pipe chafing, consequent fuel or hydraulic leakage, and possible fire.
See the MCAI for additional background information.

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Related Service Information Under 1
CFR Part 51
EASA AD 20210177R1 specifies procedures for repetitive detailed inspections for damage including hole damage, a crack, or an abnormal deformation of the leftand right-hand pylon/engine interface rod ends of the rod attachment fittings, and the interface plate and upper support brackets, measurement of the play/gap of the pylon/engine interface upper and lower rod ends, and applicable corrective actions including rod replacement. EASA AD 20210177R1
also provides for limited installation of affected parts under certain conditions.
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.
FAAs Determination These products have been approved by the aviation authority of another country and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI described above.
The FAA is issuing this AD after determining that the unsafe condition described previously is likely to exist or develop on other products of these same type designs.
Requirements of This AD
This AD requires accomplishing the actions specified in EASA AD 2021
0177R1 described previously, except for any differences identified as exceptions in the regulatory text of this AD.
Explanation of Required Compliance Information In the FAAs 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, EASA AD 2021
0177R1 is incorporated by reference in this AD. This AD requires compliance with EASA AD 20210177R1 in its entirety through that incorporation, except for any differences identified as exceptions in the regulatory text of this AD. Using common terms that are the same as the heading of a particular section in EASA AD 20210177R1 does not mean that operators need comply only with that section. For example, where the AD requirement refers to all
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required actions and compliance times, compliance with this AD requirement is not limited to the section titled Required Actions and Compliance Times in EASA AD 20210177R1.
Service information required by EASA
AD 20210177R1 for compliance will be available at https www.regulations.gov by searching for and locating Docket No.
FAA20210950 after this AD is published.
Interim Action The FAA considers this AD interim action. If final action is later identified, the FAA might consider further rulemaking then.
FAAs Justification and Determination of the Effective Date Section 553b3B of the Administrative Procedure Act APA 5
U.S.C. 551 et seq. authorizes agencies to dispense with notice and comment procedures for rules when the agency, for good cause, finds that those procedures are impracticable, unnecessary, or contrary to the public interest. Under this section, an agency, upon finding good cause, may issue a final rule without providing notice and seeking comment prior to issuance.
Further, section 553d of the APA
authorizes agencies to make rules effective in less than thirty days, upon a finding of good cause.
An unsafe condition exists that requires the immediate adoption of this AD without providing an opportunity for public comments prior to adoption.
The FAA has found that the risk to the flying public justifies foregoing notice and comment prior to adoption of this rule because rupture of the rod-eye ends could result in fuel and hydraulic pipe chafing, consequent fuel or hydraulic leakage, and possible fire. Accordingly, notice and opportunity for prior public comment are impracticable and contrary to the public interest pursuant to 5
U.S.C. 553b3B.
In addition, the FAA finds that good cause exists pursuant to 5 U.S.C. 553d for making this amendment effective in less than 30 days, for the same reasons the FAA found good cause to forego notice and comment.
Regulatory Flexibility Act RFA
The requirements of the RFA do not apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt a rule without prior notice and comment.
Because the FAA has determined that it has good cause to adopt this rule without notice and comment, RFA
analysis is not required.

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