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Federal Register / Vol. 86, No. 123 / Wednesday, June 30, 2021 / Proposed Rules
Explanation of Requirements Bulletin The FAA worked in conjunction with industry, under the Airworthiness Directive Implementation Aviation Rulemaking Committee AD ARC, to enhance the AD system. One enhancement is a process for annotating which steps in the service information are required for compliance RC with an AD. Boeing has implemented this RC
concept into Boeing service bulletins.

In an effort to further improve the quality of ADs and AD-related Boeing service information, a joint process improvement initiative was worked between the FAA and Boeing. The initiative resulted in the development of a new process in which the service information more clearly identifies the actions needed to address the unsafe condition in the Accomplishment Instructions. The new process results
in a Boeing Requirements Bulletin, which contains only the actions needed to address the unsafe condition i.e., only the RC actions.
Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 131
airplanes of U.S. registry. The FAA
estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS
Action
Labor cost
Repetitive lubrications

1 work-hour $85 per hour =
$85 per lubrication cycle.
1 work-hour $85 per hour =
$85.
40 work-hours $85 per hour = $3,400 per inspection cycle.

Verification of lubrication tasks.
Repetitive inspections

The FAA estimates the following costs to do any necessary on-condition actions that would be required based on
Cost per product
Cost on U.S. operators
$0

$85 per lubrication cycle

$11,135 per lubrication cycle.

0

$85

$11,135.

0

$3,400 per inspection cycle

$445,400 per inspection cycle.

Parts cost
the results of the proposed inspection.
The agency has no way of determining
the number of aircraft that might need these on-condition actions:

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ON-CONDITION COSTS
Cost per product
Action
Labor cost
Parts cost
Installation of new pivot pin

8 work-hours $85 per hour = $680

$98,197

Installation of new bushings
Lubrication and making sure lubrication passages are clear.
Detailed and FPI inspections on the inner cylinder lug bore.
Update lubrication tasks except for CMR
item number 32CMR01 incorporation.

1 work-hour $85 per hour = $85
1 work-hour $85 per hour = $85

$97,517 per pivot pin component assembly.
$5,968 per bushing
$0

2 work-hour $85 per hour = $170

$0

170

1 work-hour $85 per hour = $85

$0

85

The FAA has received no definitive data on which to base the cost estimates for the on-condition repairs specified in this proposed AD.
For the optional action to revise the maintenance or inspection program by incorporating CMR item number 32
CMR01, as applicable, the FAA has determined that revising the existing maintenance or inspection program takes an average of 90 work-hours per operator, although the agency recognizes that this number may vary from operator to operator. In the past, the FAA has estimated that this action takes 1 work-hour per airplane. Since operators incorporate maintenance or inspection program changes for their affected fleets, the FAA has determined that a per-operator estimate is more accurate than a per-airplane estimate. Therefore, the FAA estimates the average total cost per operator to be
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$7,650 90 work-hours $85 per workhour.
The FAA has included all known costs in its cost estimate. According to the manufacturer, however, some or all of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected operators.
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 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.

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