Federal Register - March 10, 2021
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Source: Federal Register
13632
Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations
Comment Not Relevant to the NPRM
An individual commenter submitted information that was not relevant to the NPRM.
Request for the FAA To Change the Cost of Compliance of the AD
Request: Sikorsky requested the FAA
revise the On-Condition Costs table.
Sikorsky stated the parts cost for P/N
9225012281101 should be revised to $4,535.
FAA Response: The FAA agrees. The FAA obtained the cost information provided in the NPRM from Sikorskys website at www.sikorsky360.com.
However, as Sikorsky has indicated that the price of the part has increased, the cost information in this final rule is updated accordingly.
Conclusion The FAA reviewed the relevant data, considered any comments received, and determined that air safety and the public interest require adopting this
final rule with the changes described previously. These changes are consistent with the intent of the proposals in the NPRM. The FAA also determined that these changes will not increase the scope of this AD.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Sikorsky Aircraft Corporation Alert Service Bulletin 92
32008, Basic Issue, dated January 21, 2020 the ASB. The ASB describes procedures for a one-time inspection and replacement of non-conforming components on the MLG and NLG. 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.
Differences Between This AD and the Service Information This AD requires replacement of only affected hinge pins and MLG and NLG
actuator pins. The ASB requires replacement of additional parts, such as the MLG and NLG crossbolt and the MLG and NLG upper nut. The FAA has determined that the MLG and NLG
crossbolt and the MLG and NLG upper nut fail in a safe and contained manner and therefore are not subject to this AD.
In addition, this AD requires the onetime inspection within 300 hours time in service after the effective date of this AD and any affected hinge pins and MLG and NLG actuator pins be removed from service before further flight. The ASB requires that the inspection and replacement of the affected hinge pins and MLG and NLG actuator pins occur no later than January 21, 2021.
Costs of Compliance The FAA estimates that this AD
affects 85 helicopters of U.S. registry.
The FAA estimates the following costs to comply with this AD:
ESTIMATED COSTS
Action
Labor cost
Visually inspect landing gear right MLG assembly, left MLG assembly, and NLG kit.
1 work-hour $85 per hour = $85
per landing gear.
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
Cost per product $0
$255 three landing gear installed on each helicopter.
results of the proposed inspection. The FAA has no way of determining the
$21,675
number of helicopters that might need these replacements:
ON-CONDITION COSTS
Labor cost
Replace threaded hinge pin, P/N 9225012281101 ..
Replace MLG/NLG actuator pin, P/N 9225012287
101.
Replace MLG/NLG actuator pin, P/N 9225012287
103.
1 work-hour $85 per hour = $85
1 work-hour $85 = $85
$4,535
557
$4,620
642
1 work-hour $85 = $85
609
694
According to the manufacturer, some of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected individuals. The FAA does not control warranty coverage for affected individuals. As a result, the FAA has included all costs in its cost estimate.
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
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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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Parts cost
Cost per product
Action
Regulatory Findings 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
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