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Federal Register / Vol. 86, No. 94 / Tuesday, May 18, 2021 / Rules and Regulations
Differences Between This AD and EASA
AD 20200171
EASA AD 20200171 applies to all Model SA 330 J helicopters, whereas this AD applies to certain Model SA330J
helicopters instead. EASA AD 2020
0171 refers to flight hours, whereas this AD uses hours time-in-service. EASA
AD 20200171 requires inspecting for play, whereas this AD requires inspecting for a gap instead. EASA AD
20200171 requires returning certain parts, whereas this AD requires removing the parts from service instead.
EASA AD 20200171 requires completing a response form, whereas this AD does not.
Interim Action The FAA considers this AD interim action. If final action is later identified, the FAA might consider further rulemaking then.
Costs of Compliance The FAA estimates that this AD
affects 15 helicopters of U.S. Registry.
Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates that operators may incur the following costs in order to comply with this AD.
Inspecting for a gap between the MGB
fan rotor blade and the upper section of the guide vane bearing housing takes about 2 work-hours for an estimated cost of $170 per helicopter and $2,550
for the U.S. fleet, per inspection cycle.
Replacing a set of two bearings takes about 6 work-hours and parts cost up to about $1,665 for an estimated cost of up to $2,175 per helicopter.

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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 unsafe condition that is likely to exist or develop on products identified in this rulemaking action.

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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.
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:
a. Removing Airworthiness Directive AD 20101651, Amendment 39
16410 75 FR 53857, September 2, 2010; and b. Adding the following new AD:

20210914 Airbus Helicopters Type Certificate Previously Held by Eurocopter France: Amendment 39
21528; Docket No. FAA20210092;
Project Identifier MCAI202001501R.
a Effective Date This airworthiness directive AD is effective June 22, 2021.
b Affected Airworthiness Directives ADs This AD removes AD 20101651, Amendment 3916410 75 FR 53857, September 2, 2010.
c Applicability This AD applies to Airbus Helicopters type certificate previously held by Eurocopter France Model SA330J
helicopters, certificated in any category, with main gearbox MGB oil cooling fan fan rotor shaft bearings both rear and front part number P/N 704A33651114 manufacturer P/N MP/N 205FFTX74K6G33 or P/N
704A33651268 MP/N 594918, installed.

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d Subject Joint Aircraft System Component JASC
Code 6322; Main Gearbox Oil Cooler.
e Reason This AD was prompted by the development of an improved MGB fan rotor shaft bearing design. The FAA is issuing this AD to prevent rotor burst of the MGB fan, damage to the hydraulic lines and flight controls, and subsequent 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 20200171, dated July 28, 2020 EASA AD 20200171.
h Exceptions to EASA AD 20200171
1 Where EASA AD 20200171 refers to its effective date, this AD requires using the effective date of this AD.
2 The Remarks section of EASA AD
20200171 does not apply to this AD.
3 Where EASA AD 20200171 refers to flight hours FH, this AD requires using hours time-in-service.
4 Where EASA AD 20200171 requires measuring for play, this AD requires measuring the gap between each MGB fan rotor blade and the upper section of the guide vane bearing housing.
5 Where The ASB service information referenced in EASA AD 20200171 specifies to return certain parts to Airbus Helicopters, this AD requires removing those parts from service instead.
6 While The ASB service information referenced in EASA AD 20200171 specifies completing the response form in Appendix 4, this AD does not contain that requirement.
i No Reporting Requirement Although the service information referenced in EASA AD 20200171 specifies to submit certain information to the manufacturer, this AD does not include that requirement.
j Special Flight Permit Special flight permits, as described in 14
CFR 21.197 and 21.199, are not allowed.
k Alternative Methods of Compliance AMOCs 1 The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the International Validation Branch, send it to the attention of the person identified in paragraph l of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov.

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