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Federal Register / Vol. 86, No. 139 / Friday, July 23, 2021 / Proposed Rules non-rotating scissor link, P/N G4110
200, with P/N G4112100, which has a new, improved design. Service Bulletin SB 15015, Revision B, describes the same procedures as SB
15015, Revision A, and includes a revised compliance time, an updated Situation section, and added an action.

Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified in the service information already described.

Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 32
helicopters of U.S. registry. The FAA
estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Replacement

1 work-hour $85 per hour = $85

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 FAA determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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, I certify that this proposed regulation:
1 Is not a significant regulatory action under Executive Order 12866, and 2 Would not affect intrastate aviation in Alaska.
3 Would 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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Parts cost
Cost per product
$323

List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

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

g Required Actions
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:

Helicopteres Guimbal: Docket No. FAA
20210574; Project Identifier 2019SW
073AD.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by August 23, 2021.

c Applicability This AD applies to Helicopteres Guimbal Model CABRI G2 helicopters, certificated in any category, with main rotor MR nonrotating scissor links, part number P/N
G4110200 installed.
d Subject Joint Aircraft Service Component JASC
Code: 6700, Rotorcraft Flight Control.
e Unsafe Condition This AD was prompted by a report that during scheduled maintenance on two helicopters, cracks were found on the MR
non-rotating scissor link with part number P/N G4110200. The FAA is issuing this AD to address cracking of a MR non-rotating scissor link. Cracking of a MR non-rotating scissor link, if not addressed, could result in failure of that scissor link, resulting in reduced control of the helicopter.

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$13,056

Comply with this AD within the compliance times specified, unless already done.
1 Within 50 hours time-in-service or 2
months after the effective date of this AD, whichever occurs first, modify the helicopter by replacing the MR non-rotating scissor link, P/N G4110200, with a serviceable scissor link assembly, P/N G4112100, in accordance with the Required Actions, IPC
4.12 a through d inclusive, of Guimbal Service Bulletin SB 15015, Revision C, dated August 27, 2019.
2 As of the effective date of this AD, do not install a MR non-rotating scissor link, P/
N G4110200, on any helicopter.
h Credit for Previous Actions This paragraph provides credit for actions required by paragraph g1 of this AD, if those actions were performed before the effective date of this AD using the service information specified in paragraph h1 or 2 of this AD.
1 Guimbal Service Bulletin SB 15015, Revision A, dated July 20, 2015.
2 Guimbal Service Bulletin SB 15015, Revision B, dated July 12, 2019.
i Special Flight Permits
b Affected ADs None.

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$408

Cost on U.S.
operators
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Special flight permits, as described in 14
CFR 21.197 and 21.199, are prohibited.
j 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 k1 of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.

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