Voglio sapere a riguardo di…

31098

Federal Register / Vol. 86, No. 111 / Friday, June 11, 2021 / Rules and Regulations
IBR material on the EASA website at https ad.easa.europa.eu.
For Safran material that will be IBR in this AD, contact Safran Landing Systems, One Carbon Way, Walton, KY
41094; telephone 8595258583; fax 8594858827; internet https
www.safran-landing-systems.com.
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. FAA2020
1113.

jbell on DSKJLSW7X2PROD with RULES

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. FAA2020
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 final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
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 2062313225; email dan.rodina@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20200145, 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 A300600
series airplanes; and Model A300F4
608ST airplanes. EASA AD 20200145
supersedes EASA AD 20180170, dated August 6, 2018 which corresponds to FAA AD 20190310, Amendment 39
19562 84 FR 5595, February 22, 2019
AD 20190310. Model A300F4
608ST airplanes are not certificated by the FAA and are not included on the U.S. type certificate data sheet; this AD
therefore does not include those airplanes in the applicability.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR

VerDate Sep<11>2014

17:30 Jun 10, 2021

Jkt 253001

part 39 to supersede AD 20190310.
AD 20190310 applied to all Airbus SAS Model A300 and A300600 series airplanes. The NPRM published in the Federal Register on December 8, 2020
85 FR 78971. The NPRM was prompted by reports of cracks in MLG
leg components, and a determination that additional actions including inspections, modifications, and out-ofroundness checks are needed to address the unsafe condition. The NPRM proposed to continue to require the actions required by AD 20190310.
For certain airplanes, this AD also requires 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 an EASA AD.
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 occupants. 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 comments received on the NPRM
and the FAAs response to each comment.
Support for the NPRM
The Air Line Pilots Association, International ALPA and an anonymous commenter indicated support for the NPRM.
Request To Clarify Inspection Threshold for Certain Airplanes United Parcel Service UPS Airlines asked that the proposed AD be revised to add a statement to clarify that the general visual inspection GVI for Group 2 airplanes begins within 30
months after the effective date of the FAA AD. UPS Airlines stated that it has been accomplishing Airbus Service Bulletin A300326120 at gear overhaul, which replaces the old hinge arm barrel pin with a new hinge arm barrel pin, prior to release of Airbus Service Bulletin A300326121. UPS
Airlines further pointed out that Airbus Service Bulletin A300326121 was released after Airbus Service Bulletin A300326120 pin replacement, and added installation of a new spacer during gear overhaul. UPS Airlines added that EASA AD 20200145 does
PO 00000

Frm 00012

Fmt 4700

Sfmt 4700

not have clear instructions for the initial inspection start date for airplanes with modifications accomplished using Airbus Service Bulletin A300326120
that have not accomplished Airbus Service Bulletin A300326121.
Further, UPS Airlines asserted that this request is in line with the 30-month pin replacement threshold for airplanes equipped with the older pin. Airplanes with the newer pins installed in the past three years without the spacer installation, UPS Airlines also asserted, are less prone to any safety or operational concerns than those with the older pins.
The FAA does not agree with the commenters request. In developing an appropriate compliance time for this AD, the FAA considered the urgency associated with the subject unsafe condition as well as the recommendations of the manufacturer.
The compliance time for the initial GVI
for Group 2 airplanes is Within 30
months after pin replacement, as specified in EASA AD 20200145.
Airbus Service Bulletin A300326120, which provides instructions for pin replacement, was issued September 24, 2019. Therefore, the earliest possible compliance time for the inspection would be 30 months from September 24, 2019. The FAA has not changed this AD
in this regard.
Conclusion The FAA reviewed the relevant data, considered the comments 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 20200145 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 20200145 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 201903
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
E:FRFM11JNR1.SGM

11JNR1