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Federal Register / Vol. 86, No. 225 / Friday, November 26, 2021 / Rules and Regulations
that torque tube to the inspection and replacement requirements for Group 1
helicopters. In addition, once this AD is published, any person may request an alternative method of compliance AMOC by using the procedures specified in paragraph j of this AD.
The FAA has not changed this AD
regarding this issue.
Conclusion The FAA reviewed the relevant data, considered the comment received, and determined that air safety requires adopting this AD as proposed. Except for minor editorial changes this AD is adopted as proposed in the NPRM.
None of the changes will increase the economic burden on any operator.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these products.
Related Service Information Under 1
CFR Part 51
EASA AD 20210096 requires repetitive inspections of the affected torque tube assemblies for any deficiency i.e., any play by marking
the torque tube assembly and the collar and applying specific loads to determine if there is any play; and replacement of any affected part that has any play with a serviceable part. EASA
AD 20210096 also requires the eventual replacement of any affected part with a serviceable part, and specifies that replacement of an affected part on a helicopter constitutes terminating action for the repetitive inspections for that helicopter.
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.
Differences Between This AD and the EASA AD
EASA AD 20210096 supersedes EASA AD 20190057, dated March 20, 2019 EASA AD 20190057. The Group 1 helicopters identified in both EASA
AD 20210096 and EASA AD 2019
0057 are helicopters with collective stick torque tube assemblies having part number P/N 109001103105 and batch number 823207 or earlier.

Paragraph 1 of EASA AD 20210096
addresses Group 1 helicopters that have incorporated the actions required by paragraph 2 of EASA AD 20190057.
The FAA did not issue an AD that corresponds to EASA AD 20190057, therefore, this AD requires, for Group 1
helicopters, an initial inspection of the torque tube assembly within 50 hours time-in-service TIS after the effective date of the FAA AD and repetitive inspections thereafter at intervals not to exceed 100 hours TIS.
In addition, where paragraph 5 of EASA AD 20210096 specifies, for Group 1 helicopters, replacement of an affected part with a serviceable part within 36 months after April 3, 2019
the effective date of EASA AD 2019
0057, for this AD, the compliance time is within 24 months after the effective date of this AD.
Costs of Compliance The FAA estimates that this AD
affects 136 helicopters of U.S. registry.
The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS
Action
Labor cost
Inspection

2 work-hours $85 per hour = $170 per inspection cycle.
16 work-hours $85 per hour = $1,360.

Replacement

The FAA has included all known costs in its cost estimate. According to the manufacturer, however, some of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected operators.

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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 necessary for safety in air commerce.
This regulation is within the scope of that authority because it addresses an
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Cost per product
Cost on U.S.
operators
$0

$170 per inspection cycle

$23,120 per inspection cycle.

$9,928

$11,288

$1,535,168.

Parts cost
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 that 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.

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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.
39.13

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

20212205 Leonardo S.p.a.: Amendment 3921778; Docket No. FAA20210572;
Project Identifier MCAI202100391R.
a Effective Date This airworthiness directive AD is effective January 3, 2022.

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