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Federal Register / Vol. 86, No. 104 / Wednesday, June 2, 2021 / Rules and Regulations 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.

Costs of Compliance The FAA estimates that this AD
affects 18 airplanes of U.S. registry.

The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS
Cost per product
Labor cost
Inspect the cable and exhaust crossover tube for damage.
Install additional cable clamp

.5 work-hour $85 per hour = $42.50

$0

$42.50

$765

.5 work-hour $85 per hour = $42.50

10

52.50

945

The FAA estimates the following costs to do any necessary replacements that would be required based on the
Parts cost
Cost on U.S.
operators
Action
results of the inspection. The agency has no way of determining the number of
airplanes that might need these replacements:

ON-CONDITION COSTS
Action
Labor cost
Replace alternator main power cable
Replace exhaust crossover tube

8 work-hours $85 per hour = $680
8 work-hours $85 per hour = $680

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.
Authority for This Rulemaking
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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.

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.

Regulatory Findings
39.13

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

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17:10 Jun 01, 2021

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

20211017 Mooney International Corporation: Amendment 3921550;
Docket No. FAA20210223; Project Identifier AD202000539A.

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Parts cost
Cost per product
$1,000
2,500

$1,680
3,180

a Effective Date This airworthiness directive AD is effective July 7, 2021.
b Affected ADs None.
c Applicability This AD applies to Mooney International Corporation Model M20V airplanes, serial numbers 330001 through 330018, certificated in any category.
d Subject Joint Aircraft System Component Code 2400, Electrical Power System.
e Unsafe Condition This AD was prompted by reports of short circuit and arcing of the alternator main power cable in the engine compartment. The FAA is issuing this AD to prevent arcing of the alternator main power cable in the engine compartment. This condition, if not addressed, could result in an inflight fire and loss of engine thrust control, which may lead to reduced control of the airplane.
f Compliance Comply with this AD before further flight after the effective date of this AD, unless already done.
g Required Actions 1 Inspect the alternator main power cable and the exhaust crossover tube for burn marks, chafing, holes, and cracks, and replace any cable and crossover tube that has a burn mark, chafing, a hole, or a crack.
2 Install an additional alternator cable clamp part number MS21919WCJ6 and ensure correct routing of the alternator main power cable by following steps 1.5. through 1.9. of the Instructions in Mooney International Corporation Service Bulletin M20340C, dated February 14, 2020.

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