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Federal Register / Vol. 86, No. 96 / Thursday, May 20, 2021 / Rules and Regulations
Costs of Compliance
The FAA estimates the following costs to comply with this AD:

The FAA estimates that this AD
affects 15 helicopters of U.S. registry.

ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per product
Cost on U.S.
operators
5 work-hours $85 per hour = $425

$0

$425

$6,375

The FAA estimates the following costs to do any necessary on-condition replacements that would be required
based on the results of any required actions. The FAA has no way of determining the number of helicopters
that might need these on-condition replacements:

ESTIMATED COSTS OF ON-CONDITION ACTIONS
Cost per product
Labor cost
Parts cost
40 work-hours $85 per hour = $3,400

$600,000 overhauled

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 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
VerDate Sep<11>2014

16:06 May 19, 2021

Jkt 253001

under the criteria of the Regulatory Flexibility Act.

$603,400

e Reason
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

This AD was prompted by a failure of a second stage planet gear installed in the main gearbox MGB. The FAA is issuing this AD
to address failure of an MGB second stage planet gear, which could result in failure of the MGB and subsequent loss of control of the helicopter.

The Amendment
f Compliance
Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

Comply with this AD within the compliance times specified, unless already done.

List of Subjects in 14 CFR Part 39

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

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

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 Aviation Safety Agency now European Union Aviation Safety Agency EASA AD 20180272, dated December 13, 2018 EASA AD 20180272.
h Exceptions to EASA AD 20180272

39.13

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

20211010 Airbus Helicopters:
Amendment 3921543; Docket No.
FAA20210105; Project Identifier MCAI202001422R.
a Effective Date This airworthiness directive AD is effective June 24, 2021.
b Affected Airworthiness Directives ADs None.
c Applicability This AD applies to all Airbus Helicopters Model SA330J helicopters, certificated in any category.
d Subject Joint Aircraft System Component JASC
Code 6320, Main Rotor Gearbox.

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1 Where EASA AD 20180272 refers to its effective date, this AD requires using the effective date of this AD.
2 Where EASA AD 20180272 refers to March 30, 2018 the effective date of EASA
AD 20180065, dated March 23, 2018, this AD requires using the effective date of this AD.
3 The Remarks section of EASA AD
20180272 does not apply to this AD.
4 Where EASA AD 20180272 refers to flight hours FH, this AD requires using hours time-in-service.
5 Where paragraph 1 of EASA AD 2018
0272 specifies to inspect the MGB particle detector in accordance with the instructions of Section 3 of the ASB for this AD use in accordance with the instructions in step 3.B.2.a. of the ASB.
6 Where paragraph 2 of EASA AD 2018
0272 specifies to inspect the MGB bottom housing oil sump in accordance with the instructions of Section 3 of the ASB for this AD use in accordance with the instructions in step 3.B.2.b. of the ASB.

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