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Federal Register / Vol. 86, No. 242 / Tuesday, December 21, 2021 / Rules and Regulations
You may examine the MCAI in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0786.

the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. This AD is adopted as proposed in the NPRM.

Discussion of Final Airworthiness Directive
Related Service Information Under 1
CFR Part 51

Comments The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion This product has been approved by the aviation authority of another country and is approved for operation in the United States. Pursuant to the FAAs bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI and service information referenced above. The FAA reviewed
The FAA reviewed Pilatus PC6
Service Bulletin SB No. 55005, dated February 25, 2021 Pilatus SB 55005.
The service information specifies procedures for repetitively inspecting the hinge bolt installations and taking any necessary corrective actions until the hinge bolt is modified. Modifying the hinge bolt installation in accordance with Pilatus SB 55005 makes the airplane a CONFIG 2 design. 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 the ADDRESSES section.
Other Related Service Information Pilatus also issued Pilatus PC6 SB
No. 55003, dated November 29, 2013;
Pilatus PC6 SB No. 55003, Revision 1, dated December 9, 2014; Pilatus PC6
SB No. 55003, Revision 2, dated January 19, 2017; and Pilatus PC6 SB
No. 55003, Revision 3, dated November 6, 2017. This service information specifies procedures for modifying the hinge bolt installations, which makes the airplane a CONFIG 2
design. This service information was superseded by Pilatus SB 55005.
Costs of Compliance The FAA estimates that this AD
affects 50 airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS
Action
Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Inspecting CONFIG 1 airplanes

4.5 work-hours $85 per hour = $382.50

Not applicable

Modifying from CONFIG 1 to CONFIG 2

14 work-hours $85 per hour = $1,190

$1,200

$382.50 per inspection cycle.
$2,390

$19,125 per inspection cycle.
$119,500.

The FAA estimates the following costs to do any necessary corrective actions that would be required based on
the results of the mandated inspection.
The FAA has no way of determining the
number of airplanes that might need these actions:

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ON-CONDITION COSTS
Action
Labor cost
Accomplishing corrective actions

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

Authority for This Rulemaking
Regulatory Findings
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.

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.

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Parts cost $200

Cost per product $242.50

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 20120616, Amendment 3916997
77 FR 19061, March 30, 2012; and b. Adding the following new airworthiness directive:

E:FRFM21DER1.SGM

21DER1