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Federal Register / Vol. 86, No. 87 / Friday, May 7, 2021 / Proposed Rules information and determining the unsafe condition described previously is likely to exist or develop in other products of these same type designs.
Certain changes described above expand the scope of the SNPRM. As a result, the FAA has determined that it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this SNPRM.

distance of the webs at the four attachment holes of the stretcher support on the left and right sides of the 9-degree frame, and additional actions depending on the findings. The additional actions include repetitively inspecting the frame for cracking, repair if necessary, and installation of a reinforcement plate reinforcing angle on the frame. These documents are distinct since they refer to different helicopter models.
American Eurocopter Engineering Report No. AEC/03RE005, Addendum ASB 53.00.42 and 53.00.43
AS365, dated January 29, 2003, specifies U.S. and European rivet equivalent part numbers, U.S. rivet part numbers with acceptable substitute materials with greater strength properties, and 5 rivet, 6 rivet, and pin Hi-lok alternatives.
This material 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.

Proposed AD Requirements This proposed AD would require accomplishing the actions specified in DGAC AD 2001061053A and DGAC
AD 2001283025A, described previously, as incorporated by reference, except for any differences identified as exceptions in the regulatory text of this AD and except as discussed under Differences Between this Proposed AD and the MCAI.

Comments The FAA gave the public the opportunity to participate in developing this proposed AD. The FAA received no comments on the first SNPRM or on the determination of the cost to the public.
FAAs Determination and Requirements of This SNPRM
These products have been approved by the aviation authority of another country, and are approved for operation in the United States. Pursuant to the bilateral agreement with the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI referenced above. The FAA is proposing this AD
after evaluating all the relevant
Explanation of Required Compliance Information In the FAAs ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a process to use certain EASA ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. As mentioned previously, when the SNPRM was published the DGAC was the Technical Agent for France. Since that time EASA has become the Technical Agent for the Member States of the European Union, which includes France. The FAA has since coordinated with other manufacturers and civil aviation authorities CAAs to use this process.
As a result, DGAC AD 2001061053A
and DGAC AD 2001283025A will be incorporated by reference in the FAA
final rule. This proposed AD would,
therefore, require compliance with DGAC AD 2001061053A and DGAC
AD 2001283025A in their entirety, through that incorporation, except for any differences identified as exceptions in the regulatory text of this proposed AD. Using common terms that are the same as the heading of a particular section in the DGAC ADs does not mean that operators need comply only with that section. Service information specified in DGAC AD 2001061
053A and DGAC AD 2001283025A
that is required for compliance with DGAC AD 2001061053A and DGAC
AD 2001283025A will be available on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0175 after the FAA final rule is published.
Differences Between This Proposed AD
and the MCAI
The FAA has determined that acceptable U.S. alternatives to the fasteners and materials needed to perform repairs or modifications are listed in American Eurocopter Engineering Report No. AEC/03RE005
Addendum ASB 53.00.42 and 53.00.043 AS365, dated January 29, 2003.
Where DGAC AD 2001061053A
exempts helicopters that were delivered after January 31, 2001, from the applicability, this proposed AD does not exempt those helicopters.
Costs of Compliance The FAA estimates that this proposed AD affects 31 helicopters of U.S.
registry. The FAA estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per product
Cost on U.S.
operators
3 work-hours $85 per hour = $255

$100

$355

$11,005

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

ESTIMATED COSTS OF ON-CONDITION ACTION
Labor cost
Parts cost
Cost per product
Up to 8 work-hours $85 per hour = $680

$250

Up to $930

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