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Federal Register / Vol. 86, No. 171 / Wednesday, September 8, 2021 / Rules and Regulations by Canadian AD CF201737, dated December 19, 2017 Canadian AD CF
201737, issued by Transport Canada, which is the aviation authority for Canada, to correct an unsafe condition for Airbus Helicopters Model AS 350 B, AS 350 BA, AS 350 B1, AS 350 B2, AS
350 B3, AS 350 D, AS 355 E, AS 355 F, AS 355 F1, AS 355 F2, AS 355 N, and AS 355 NP helicopters. Transport Canada advises that there have been reports that the lanyards, which hold the quick release pins to the forward bracket assembly of certain litter kits, can loop around the directional control pedal stubs, limiting the movement of the pedals, which affects the control of the flight. If this condition exists and is not corrected during installation, this limitation may not be apparent until the pedal input is required in flight. This condition, if not addressed, could result in difficulty controlling the helicopter.
Accordingly, Canadian AD CF2017
37 requires modification of the lanyard attachment location for certain litter kit installations. Canadian AD CF201737
also specifies that installation of an affected part number litter kit is prohibited unless the installation conforms to the requirements of Airbus Helicopters Service Bulletin SBAHCA
128, Revision 0, dated March 24, 2017.

Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion These helicopters have been approved by the aviation authority of Canada and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with Canada, Transport Canada, its technical representative, has notified the FAA of the unsafe condition described in its AD. The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these helicopters. Except for minor editorial changes, this AD is adopted as proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Airbus Helicopters Service Bulletin SBAHCA128, Revision 0, dated March 24, 2017. This service information specifies procedures for modifying the bead chain tether attachment locations for litter kits with certain part numbers. The modification includes relocating the bead chain tethers by removing the screws and
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washers for the pip pins on the forward bracket assembly; filling the empty holes with rivets; determining the new locations of and drilling new holes; and securing the bead chain tethers on the top side of the forward bracket assembly in the new hole locations. 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 Transport Canada AD
This AD requires a pre-flight check prior to each flight to determine if there is interference between the lanyards that hold the quick release pins to the forward bracket assembly of the litter kit and the flight controls. This pre-flight check requirement will be terminated upon completion of the modification of the litter kit installation. Canadian AD
CF201737 does not include a requirement for the pre-flight check prior to each flight to determine if there is interference between the lanyards and the flight controls.
Costs of Compliance The FAA estimates that this AD
affects 967 helicopters of U.S. Registry.
The FAA estimates the following costs to comply with this AD.

ESTIMATED COSTS
Action
Labor cost
Pre-flight check for lanyard interference.

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

Modification of lanyard attachment location.

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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 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
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Parts cost
Cost per product
Cost on U.S. operators
$0

$42.50 per inspection cycle

$41,097.50 per inspection cycle.

0

$85

$82,195.

unsafe condition that is likely to exist or develop on helicopters identified in this rulemaking action.

on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

Regulatory Findings
List of Subjects in 14 CFR Part 39

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 3 Will not have a significant economic impact, positive or negative,
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

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The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.

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