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Federal Register / Vol. 86, No. 228 / Wednesday, December 1, 2021 / Proposed Rules
control of the airplane. The FAA is proposing this AD to address the unsafe condition on these products.
FAAs Determination The FAA is issuing this NPRM after determining that the unsafe condition described previously is likely to exist or develop on other products of the same type design.
Related Service Information Under 1
CFR Part 51
The FAA reviewed True Flight Aerospace Service Bulletin SB195, Revision A, dated June 1, 2021 True Flight SB195A. This service information specifies procedures for inspecting the primary structure and flight controls for bondline separation and corrosion and repairing or replacing
parts and applying corrosion inhibitor as necessary.
This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in ADDRESSES.
Other Related Service Information The FAA also reviewed True Flight Aerospace Service Kit 125, Revision B.
This service information specifies procedures for repairing bondline delamination of flight controls and structures.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified in True Flight SB195A as already
described, except as discussed under Differences Between the AD and the Service Information.
Differences Between This Proposed AD
and the Service Information This proposed AD would only require the Part A inspections, and not the Part B inspection, from True Flight SB
195A. In addition, True Flight SB195A
specifies reporting information to the manufacturer, and this proposed AD
would not.
Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 2,466
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS
Action
Labor cost
Parts cost
Cost per airplane
Inspect for delamination and corrosion.

8 work-hours $85 per hour = $680 per inspection cycle.

Not applicable

$680 per inspection cycle

The FAA estimates that it would take 3 work-hours at $85 per work-hour to do the proposed corrosion inhibitor treatment. Parts would cost $104 for a total proposed cost of $359 per airplane.
In addition, there could be a wide range of areas that may require repair fuselage, stabilizers, and wings for the delaminated bondlines and/or corrosion with potential replacement of the entire component. The FAA has no way of determining the number of airplanes that might need these repairs or the exact costs for corrective actions needed as a result of the proposed inspection, as the damage may vary significantly from airplane to airplane.

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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
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that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.
Regulatory Findings The 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 above, I
certify this proposed regulation:
1 Is not a significant regulatory action under Executive Order 12866, 2 Would not affect intrastate aviation in Alaska, and 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

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Cost on U.S. operators $1,676,880 per inspection cycle.

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:

True Flight Holdings LLC: Docket No. FAA
20211017; Project Identifier AD2021
00495A.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by January 18, 2022.
b Affected ADs None.
c Applicability This AD applies to True Flight Holdings LLC Model AA1, AA1A, AA1B, AA1C, AA5, AA5A, and AA5B airplanes, all serial numbers, certificated in any category.
d Subject Joint Aircraft System Component JASC
Code: 5330, Fuselage Main, Plate/Skin; 5512, Horizontal Stabilizer, Plate/Skin; 5522, Elevator, Plates/Skin Structure; 5532, Vertical Stabilizer, Plates/Skin; 5542, Rudder, Plate/Skin; 5730, Wing, Plates/Skins.
e Unsafe Condition This AD was prompted by corrosion and delamination of the horizontal stabilizer bondlines. The FAA is issuing this AD to detect and address cracks, buckles, corrosion,
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