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Federal Register / Vol. 86, No. 241 / Monday, December 20, 2021 / Rules and Regulations
induction duct. The FAA is issuing this AD to prevent ice from accumulating on the oil cooler air induction duct fins, which could lead to an increase in oil temperature, uncommanded engine inflight shutdown, and reduced airplane control.
Discussion of Final Airworthiness Directive 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 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 70254, dated April 2018. The service information specifies procedures for removing the four upper fins of the oil cooler air induction duct and for re-identifying the oil cooler air induction duct with a new part number.
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.
Other Related Service Information The FAA also reviewed Daher Aerospace Service Bulletin SB 70231, Revision 1, dated July 2018; and Daher Aerospace Service Bulletin SB 70219, Revision 2, dated July 2018. The service information identifies the kit number and installation procedures for replacing the oil cooler air induction duct.

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Costs of Compliance The FAA estimates that this AD will affect up to 807 airplanes of U.S.
registry. The FAA also estimates that it would take about 3 work-hours per airplane to comply with the requirements of this AD. The average labor rate is $85 per work-hour.
Required parts will cost about $50 per airplane.

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Based on these figures, the FAA
estimates the total cost of this AD on U.S. operators to be $246,135 or $305
per airplane.
Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs 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 Agencys 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 This AD will not have federalism implications under Executive Order 13132. This AD will 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 AD:
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 Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.

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39.13

Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20212510 Daher Aerospace Type Certificate Previously Held by SOCATA: Amendment 3921854;
Docket No. FAA20201069; Project Identifier 2018CE039AD.
a Effective Date This airworthiness directive AD is effective January 24, 2022.
b Affected ADs None.
c Applicability This AD applies to Daher Aerospace type certificate previously held by SOCATA
Model TBM 700 airplanes, all serial numbers, certificated in any category, with an oil cooler air induction duct part number P/N
T700A7920040001, T700H792000900000, T700H792001900000, T700H792001900200, T700H792001900400, or T700H792001900600 installed.
Note 1 to paragraph c of this AD: The applicable oil cooler air induction duct P/Ns may be installed in accordance with modification 70043579; Daher Aerospace Service Bulletin SB 70231, Revision 1, dated July 2018; or Daher Aerospace Service Bulletin SB 70219, Revision 2, dated July 18, 2018.
d Subject Joint Aircraft System Component JASC
Code 7900, Engine Oil System Airframe.
e Unsafe Condition 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 unsafe condition that is the subject of the MCAI is ice accumulation on the oil cooler air inlet duct fin. The FAA is issuing this AD to prevent ice from accumulating on the oil cooler air induction duct fins, which could lead to an increase in oil temperature, uncommanded engine inflight shutdown, and reduced airplane control.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Modify the Oil Cooler Air Induction Duct 1 Within 3 months after the effective date of this AD, remove the four upper fins of the oil cooler air induction duct and re-identify the oil cooler air induction duct in accordance with the Description of Accomplishment Instructions in Daher Aerospace Service Bulletin SB 70254, dated April 2018.
2 As of the effective date of this AD, do not install an oil cooler air induction duct P/
N T700A7920040001, T700H792000900000, T700H792001900000, T700H792001900200, T700H792001900400, or T700H792001900600 on any airplane.

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