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46768

Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations
number of helicopters that might need these on-condition actions:

ESTIMATED COSTS OF ON-CONDITION ACTIONS
Action
Labor cost
Parts cost
Replacements
Reporting

19 work-hours $85 per hour = $1,615
1 work-hour $85 per hour = $85

$88,760
0

Cost per product $90,375
85

The FAA has received no definitive data on which to base the cost estimates for the on-condition repairs specified in this AD.

According to the manufacturer, some or all of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected individuals. The FAA does not control warranty coverage for affected individuals. As a result, the FAA has included all known costs in the cost estimate.
Paperwork Reduction Act A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB control number. The control number for the collection of information required by this AD is 21200056. The paperwork cost associated with this AD
has been detailed in the Costs of Compliance section of this document and includes time for reviewing instructions, as well as completing and reviewing the collection of information.
Therefore, all reporting associated with this AD is mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to Information Collection Clearance Officer, Federal Aviation Administration, 10101
Hillwood Pkwy., Fort Worth, TX 76177
1524.

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.

c Applicability
Regulatory Findings
Joint Aircraft System Component JASC
Code 6400, Tail Rotor System.

The FAA determined that 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 regulation:
1 Is not a significant regulatory action under Executive Order 12866, and 2 Will not affect intrastate aviation in Alaska.
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

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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
VerDate Sep<11>2014

16:42 Aug 19, 2021

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1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

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

20211718 Leonardo S.p.a.: Amendment 3921701; Docket No. FAA20210686;
Project Identifier MCAI202100687R.
a Effective Date This airworthiness directive AD becomes effective September 7, 2021.
b Affected ADs None.

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This AD applies to Leonardo S.p.a. Model A109C, A109K2, A109E, A109S, and AW109SP helicopters, certificated in any category, all serial numbers.
d Subject
e Unsafe Condition This AD was prompted by a report of a crack on the tail rotor TR mast. The FAA
is issuing this AD to address cracking on the TR mast, which could lead to failure of the TR mast, with consequent loss of control of the helicopter.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Requirements Except as specified in paragraph h of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency EASA AD 20210144, dated June 17, 2021 EASA AD 20210144.
h Exceptions to EASA AD 20210144
1 Where EASA AD 20210144 refers to its effective date, this AD requires using the effective date of this AD.
2 The Remarks section of EASA AD
20210144 does not apply to this AD.
3 Where EASA AD 20210144 refers to flight hours FH, this AD requires using hours time-in-service.
4 Where paragraph 1 of EASA AD 2021
0144 specifies a compliance time of 25 FH or 3 months, whichever occurs first, this AD
requires compliance within 25 hours time-inservice after the effective date of this AD.
5 Where Note 1 of EASA AD 20210144
specifies a tolerance of 30 FH, this AD does not allow a tolerance.
6 Where paragraph 6 of EASA AD 2021
0144 states the term discrepancies, for the purposes of this AD discrepancies include dents, corrosion, elongation, scratches, wear, excessive wear web visible, fretting, or stepping.
7 Where paragraph 7 of EASA AD 2021
0144 states the term discrepancies, for the purposes of this AD discrepancies include abnormal wear condition, corrosion, fretting, crack, or damage including dents, elongation, scratches, or stepping.
8 Paragraphs 5 and 9 of EASA AD
20210144 do not apply to this AD.

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