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Federal Register / Vol. 86, No. 89 / Tuesday, May 11, 2021 / Proposed Rules Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 3,421
airplanes of U.S. registry.

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

ESTIMATED COSTS
Cost per product
Cost on U.S.
operators
Action
Labor cost
Parts cost
Inspections includes part removal for access, removal of foam, if required, visual inspection, eddy current inspection of the cap kick area, and reassembly.
Spar treatment application of primer and corrosion inhibitor .
Report of inspection results

12 work-hours $85 per hour = $1,020

Not applicable
$1,020

$3,489,420

3.5 work-hours $85 per hour = $297.50

$340

637.50

2,180,887.50

2 work-hours $85 per hour = $170

Not applicable
170

581,570

Model 210-series airplanes may only require application of corrosion inhibitor, depending on the condition of the zinc chromate primer. Model 177series airplanes may or may not require
application of the primer, depending on the production year and the quality of any existing zinc chromate primer.
The FAA estimates the following costs to do any necessary repairs or
replacements that would be required based on the results of the proposed inspection. The agency has no way of determining the number of aircraft that might need these actions:

ON-CONDITION COSTS
Action
Labor cost
Parts cost
Corrosion removal
On-condition eddy current inspection
Spar replacement, Model 210/T210-series airplanes ..
Spar replacement, Model P210-series airplanes
Spar replacement, Model 177-series airplanes

2 work-hours $85 per hour = $170
1 work-hour $85 per hour = $85
160 work-hours $85 per hour = $13,600
170 work-hours $85 per hour = $14,450
120 work-hours $85 per hour = $10,200

Not applicable Not applicable $30,000
$30,000
$30,000

The amount of work-hours necessary to complete the eddy current inspection and corrosion removal will depend on the extent of the corrosion on the spar.
The FAA has no way of estimating the work-hours that may be required for those procedures. The FAAs cost estimate assumes a minimum of one hour for the eddy current inspection and two hours for the corrosion removal. If the operator needs an alternative method of compliance for repair, the FAA has no way of estimating the extent of damage or follow-on eddy current inspection that may be required. The FAA has no way of estimating the potential cost of those actions.
Replacement spars are not currently available from Textron. Textron no longer produces the current spar design, and they are working to develop a new spar design. The FAA does not have data to determine the availability of replacement spars from other sources.
Paperwork Reduction Act A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to penalty for failure to comply with a collection of information subject to the requirements of the Paperwork
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Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB
Control Number for this information collection is 21200056. Public reporting for this collection of information is estimated to take approximately 2 hours per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information.
All responses to this collection of information are mandatory. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Information Collection Clearance Officer, Federal Aviation Administration, 10101 Hillwood Parkway, Fort Worth, TX 761771524.
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.

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Cost per product $170
85
43,600
44,450
40,200

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.
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
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