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Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations
accomplishment of Work Package 3 of Boeing Alert Service Bulletin 74727
2366, Revision 3, dated March 22, 2016, in lieu of the initial inspection specified by Table 4 of Boeing Alert Requirements Bulletin 74757A2367 RB, dated November 15, 2019. UPS asserted that there is significant overlap between the two flap inspections.
The FAA does not agree with the request. The inspections specified in Boeing Alert Requirements Bulletin 74757A2367 RB, dated November 15, 2019, include additional structure to inspect, compared to Boeing Alert Service Bulletin 747272366, Revision 3, dated March 22, 2016, and also specify corrective action if damage is detected. The requirements of this AD
have been coordinated with the DAH.
UPS did not provide the FAA any substantiating data to demonstrate that the less stringent inspections from Boeing Alert Service Bulletin 74727
2366, Revision 3, dated March 22, 2016, provide an acceptable level of safety.

The FAA has not changed this AD as a result of this comment.
Conclusion The FAA reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting this final rule as proposed, except for minor editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Boeing Alert Requirements Bulletin 74757A2367
RB, dated November 15, 2019. This service information describes procedures for repetitive replacement of certain parts; a general visual inspection
to determine production configuration for certain parts; a repetitive lubrication of certain parts and a repetitive general visual inspection of certain parts for any exuding grease; repetitive detailed inspections of certain parts for loose or missing attachment bolts, cracks or bushing migration, cracks or gouges, or broken, binding, or missing rollers;
repetitive detailed inspections of certain parts for cracks or corrosion; repetitive lubrication; and on-condition actions if necessary. On-condition actions include replacements and repair. 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.
Costs of Compliance The FAA estimates that this AD
affects 125 airplanes of U.S. registry.
The FAA estimate the following costs to comply with this AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Repetitive replacement

Up to 10 work-hours $85 per hour = Up to $850 per replacement cycle.
1 work-hour $85 per hour = $85

$35,719

4 work-hours $85 per hour =
$340 per inspection cycle.
1 work-hour $85 per hour = $85
per lubrication.

General visual inspection for parts production configuration.
Repetitive detailed inspections
Repetitive inspection for lubrication and repetitive lubrication.

The FAA estimates the following costs to do any necessary on-condition
Parts cost
Cost per product
Cost on U.S. operators
Up to $36,569 per replacement cycle.

Up to $4,571,125 per replacement cycle.

0

$85

$10,625.

0

$340 per inspection cycle
0

$85 per lubrication

$42,500 per inspection cycle.
$10,625 per lubrication.

actions that would be required. The FAA has no way of determining the
number of aircraft that might need these on-condition actions:

ESTIMATED COSTS OF ON-CONDITION REPLACEMENTS
Labor cost
Parts cost
Up to 8 work-hour $85 per hour = $680

Up to $17,720 ..

The FAA has received no definitive data that would enable the FAA to provide cost estimates for the oncondition repairs specified in this AD.
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
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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 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
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Cost per product Up to $18,400.

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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