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Federal Register / Vol. 86, No. 237 / Tuesday, December 14, 2021 / Rules and Regulations
k 1 DOE may rescind or modify a waiver or interim waiver at any time upon DOEs determination that the factual basis underlying the petition for waiver or interim waiver is incorrect, upon a determination that the results from the alternate test procedure are unrepresentative of the basic models true energy consumption characteristics, or for other appropriate reason. Waivers and interim waivers are conditioned upon the validity of statements, representations, and documents provided by the requestor; any evidence that the original grant of a waiver or interim waiver was based upon inaccurate information will weigh against continuation of the waiver.
DOEs decision will specify the basis for its determination and, in the case of a modification, will also specify the change to the authorized test procedure.

FR Doc. 202126756 Filed 121321; 8:45 am BILLING CODE 645001P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210795; Project Identifier 2019CE054AD; Amendment 3921837; AD 20212416
RIN 2120AA64

Airworthiness Directives; Daher Aerospace Type Certificate Previously Held by SOCATA Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

jspears on DSK121TN23PROD with RULES1

This AD is effective January 18, 2022.
The Director of the Federal Register approved the incorporation by reference
DATES:

16:20 Dec 13, 2021

Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210795; 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, the MCAI, 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:
Gregory Johnson, Aviation Safety Engineer, FAA, General Aviation &
Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106; phone:
720 6265462; fax: 816 3294090;
email: gregory.johnson@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
The FAA is adopting a new airworthiness directive AD for all Daher Aerospace type certificate previously held by SOCATA Model TB
20 and TB 21 airplanes. This AD was prompted by mandatory continuing airworthiness information MCAI
originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as cracks on the main landing gear MLG legs. This AD requires repetitively inspecting the MLG and performing all applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.

SUMMARY:

VerDate Sep<11>2014

of a certain publication listed in this AD
as of January 18, 2022.
ADDRESSES: For service information identified in this final rule, contact Daher Aircraft Inc., Pompano Beach Airpark, 601 NE 10 Street, Pompano Beach, FL 33060; phone: 954 893
1400; website: www.tbm.aero. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call 816 3294148. It is also available at https www.regulations.gov by searching for and locating Docket No.
FAA20210795.

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The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to all Daher Aerospace type certificate previously held by SOCATA
Model TB 20 and TB 21 airplanes. The NPRM published in the Federal Register on September 17, 2021 86 FR
51840. The NPRM was prompted by MCAI originated by the European Union Aviation Safety Agency EASA, which is the Technical Agent for the Member States of the European Union. EASA
issued AD 20190274, dated November 6, 2019 referred to after this as the MCAI, to address an unsafe condition on all Daher Aerospace formerly SOCATA Model TB 20 and TB 21
airplanes. The MCAI states:
Occurrences have been reported of finding cracks on MLG legs of TB 20 and TB 21
aeroplanes.

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This condition, if not detected and corrected, could lead to structural failure of an MLG leg and consequent MLG collapse, possibly resulting in damage to the aeroplane and injury to occupants.
To address this potential unsafe condition, DAHER Aerospace issued the service bulletin SB to provide inspection instructions.
For the reasons described above, this EASA AD requires repetitive special detailed inspections SDI using magnetic particle method of the affected MLG area, and, depending on findings, accomplishment of applicable corrective actions.

You may examine the MCAI in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0795.
Comments The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion This product has been approved by the aviation authority of another country and is 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 and service information referenced above. The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. This AD is adopted as proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Daher Aerospace Service Bulletin SB 1015432, dated September 2019. The service information contains procedures for repetitively inspecting the MLG area for cracks and performing any rework and repair. This service information 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 52 airplanes of U.S. registry. The FAA also estimates that it would take about 8 work-hours per airplane to perform the magnetic particle inspection required by this AD. The average labor rate is $85 per work-hour.
Based on these figures, the FAA
estimates the inspection cost of this AD
on U.S. operators to be $35,360, or $680
per airplane, per inspection cycle.

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