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Federal Register / Vol. 86, No. 193 / Friday, October 8, 2021 / Proposed Rules
that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI
as PROPIN. The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI
should be sent to Gregory Johnson, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Section, 901
Locust, Room 301, Kansas City, MO
641062641. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Background The European Union Aviation Safety Agency EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD
20200262, dated November 30, 2020
referred to after this as the MCAI, to address an unsafe condition on certain serial-numbered Vulcanair S.p.A.
Models P.68R, P.68C, P.68CTC, P.68
OBSERVER, P.68 OBSERVER 2, and P.68TC OBSERVER airplanes.
The MCAI states:
Two occurrences have been reported of finding a damaged stabilator trim control cable connected to the stabilator trim actuator assembly, mounted on fuselage frame No.16. The related technical investigation concluded that the cause of the damage is a design issue.
This condition, if not detected and corrected, could lead to failure of an affect
sic part, preventing trim surface control remaining in the last position, possibly resulting in reduced control of the aeroplane.
To address this potential unsafe condition, and pending a design improvement, Vulcanair published the service bulletin SB, to provide inspection instructions for detecting damage.
For the reasons described above, this EASA AD requires repetitive inspections of the affected parts, and, depending on findings, replacement.
This EASA AD is considered to be an interim action and further EASA AD action may follow.

You may examine the MCAI in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0871.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Vulcanair S.p.A.
P.68 Variants Mandatory Service Bulletin No. 263, dated October 20, 2020. The service information contains procedures for repetitively inspecting each stabilator trim control cable part number 5.60671, 5.61611, 5.61711, 5.62312, or 5.62314 for broken wires and replacing the cable if necessary.
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.
FAAs Determination This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to the FAAs bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI and service information referenced above. The FAA is issuing this NPRM after determining the unsafe condition described previously is likely to exist or develop on other products of the same type design.
Proposed AD Requirements This proposed AD would require accomplishing the actions specified in the service information already described. This proposed AD would also require reporting inspection results to the manufacturer.
Interim Action The FAA considers this proposed AD
an interim action. The inspection reports that would be required by this proposed AD will enable the manufacturer to obtain better insight into the nature, cause, and extent of the damage, and eventually to develop final action to address the unsafe condition.
Once final action has been identified, the FAA might consider further rulemaking.
Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 127
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS
Action
Labor cost
Inspection

0.50 work-hour $85 per hour = $42.50 per inspection cycle.
1 work-hour $85 per hour =
$85 per reporting cycle.

Report

The FAA estimates the following costs to do any replacements that would be required based on the results of the
Parts cost
Cost per product
Cost on U.S. operators
$0

$42.50 per inspection cycle

$5,397.50 per inspection cycle.

0

$85 per inspection cycle

$10,795 per inspection cycle.

proposed inspection. The FAA has no way of determining the number of
airplanes that might need this replacement:

jspears on DSK121TN23PROD with PROPOSALS1

ON-CONDITION COSTS
Action
Labor cost
Replacement

2 work-hours $85 per hour = $170

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 a penalty for failure to comply with
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a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a currently valid OMB Control Number. The OMB
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Parts cost
Cost per product
$340

collection is 21200056. Public reporting for this collection of information is estimated to be approximately 1 hour per response, including the time for reviewing instructions, searching existing data
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$510