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Federal Register / Vol. 86, No. 187 / Thursday, September 30, 2021 / Rules and Regulations
Differences Between This AD and the EASA AD
For helicopters with DUNLOP cyclic stick grip MP/N AC66444 with UP/
DOWN switches for rescue hoist control installed, this AD requires accomplishing a ground test of the UP/
DOWN switches for proper function before each hoist operation, whereas the EASA AD does not. Where EASA AD
20210023 refers to its effective date or the effective date of EASA Emergency AD 20200217E, dated October 8, 2020, this AD requires using the effective date of this AD. Where the service information referenced in EASA
AD 20210023 specifies work must be performed on the helicopter by the operator, this AD requires that the work be accomplished by a mechanic that meets the requirements of 14 CFR
part 65 subpart D. Where the service information referenced in EASA AD
20210023 specifies to discard certain placards and Flight Manual pages that were required by EASA AD 20200217
E, this AD requires removing them instead.
EASA AD 20210023 requires operators to inform all flight crews of revisions to the RFM, and thereafter to operate the helicopter accordingly.
However, this AD does not specifically require those actions.
14 CFR 91.9 requires that no person may operate a civil aircraft without complying with the operating limitations specified in the RFM.
Therefore, including a requirement in this AD to operate the helicopter according to the revised RFM would be redundant and unnecessary. Further, compliance with such a requirement in an AD would be impracticable to demonstrate or track on an ongoing basis; therefore, a requirement to operate the helicopter in such a manner would be unenforceable.
Where paragraph 4 of EASA AD
20210023 allows modifying a Group 2
helicopter into a Group 1 helicopter, this AD also requires accomplishing the requirements of paragraph g1 of this AD. Finally, the service information referenced in EASA AD 20210023
requires reporting certain information, whereas this AD does not.

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Costs of Compliance The FAA estimates that this AD
affects 390 helicopters of U.S. Registry.
The FAA estimates that operators may incur the following costs in order to comply with this AD. Labor costs are estimated at $85 per work-hour.
Accomplishing a ground test of the UP/DOWN switches for proper function takes a minimal amount of time for a
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nominal cost. Replacing a DUNLOP
cyclic stick grip, if required, takes about 2.5 work-hours and parts cost about $2,500 for an estimated cost of $2,713.
Installing the placard and revising the existing RFM for your helicopter takes about 0.5 work-hour for an estimated cost of $43 per helicopter and $16,770
for the U.S. fleet.
Modifying the electrical wiring of the DUNLOP cyclic stick takes up to 4
work-hours and parts cost $2,147 for an estimated cost of up to $2,487 per helicopter and $969,930 for the U.S.
fleet. Removing the placard and revising the existing RFM for your helicopter takes about 0.5 work-hour for an estimated cost of $43 per helicopter and $16,770 for the U.S. fleet.
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 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 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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List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
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.
39.13

Amended
2. The FAA amends 39.13 by:
a. Removing Airworthiness Directive AD 20202403, Amendment 39
21333 85 FR 76955, December 1, 2020;
and b. Adding the following new AD:

20211909 Airbus Helicopters:
Amendment 3921727; Docket No.
FAA20210559; Project Identifier MCAI202100079R.
a Effective Date This airworthiness directive AD is effective November 4, 2021.
b Affected ADs This AD replaces AD 20202403, Amendment 3921333 85 FR 76955, December 1, 2020 AD 20202403.
c Applicability This AD applies to Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, and AS355F2 helicopters, certificated in any category, as identified in European Union Aviation Safety Agency EASA AD 20210023, dated January 19, 2021 EASA AD 20210023.
d Subject Joint Aircraft System Component JASC
Code 2500, Cabin Equipment/Furnishings.
e Unsafe Condition This AD was prompted by the development of a modification of the electrical wiring of the hoist control on the DUNLOP cyclic stick grip. The FAA is issuing this AD to prevent inadvertent activation of the rescue hoist cable cutter and consequent detachment of an external load or person from the helicopter hoist. This condition could result in personal injury or injury to persons on the ground.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Requirements 1 For helicopters with DUNLOP cyclic stick grip manufacturer part number AC66444 with UP/DOWN switches for rescue
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