Voglio sapere a riguardo di…

35696

Federal Register / Vol. 86, No. 127 / Wednesday, July 7, 2021 / Proposed Rules
known relevant information and determining that the unsafe condition described previously is likely to exist or develop on other helicopters of these same type designs.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Airbus Helicopters Alert Service Bulletin ASB No. EC130
67A019, Revision 0, dated February 23, 2016, which specifies inspecting and adjusting the clearance between the hook and pin.
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.
Proposed AD Requirements in This NPRM
This proposed AD would require, within 90 hours time-in-service TIS
after the effective date of the AD, or before the next autorotation training flight, whichever occurs first, removing the protective boot along the collective and measuring the clearance between the hook and pin. If the clearance is less than 5 mm 0.196 in, adjusting the clearance between the hook and the pin to prevent interference would be required. This proposed AD would then require re-installing the protective boot in accordance with the manufacturers service information.

khammond on DSKJM1Z7X2PROD with PROPOSALS

Differences Between This Proposed AD
and the EASA AD
The EASA AD requires compliance within 165 hours TIS or 3 months, whichever occurs first. Since the unsafe condition occurred at a collective position commanded during an autorotation, this proposed AD would require compliance within 90 hours TIS
after the effective date of this AD or before the next autorotation training flight, whichever occurs first. Based on the average fleet usage, 90 hours TIS
would correspond with the 3-month compliance requirement of the EASA
AD.
Costs of Compliance The FAA estimates that this proposed AD would affect 214 helicopters of U.S.
Registry. At an average labor rate of $85
per work-hour, the FAA estimates that operators may incur the following costs in order to comply with this proposed AD. Removing the protective boot would require about 2 work-hours for a cost of $170 per helicopter and a cost of $36,380 for the U.S. fleet. Determining the clearance between the hook and pin would require about 0.5 work-hour, for a cost of $43 per helicopter and a cost
VerDate Sep<11>2014

16:33 Jul 06, 2021

Jkt 253001

of $9,202 for the U.S. fleet. If required, adjusting the clearance would take about 2 work-hours for a cost of $170
per helicopter. Re-installing the protective boot would require about 2
work-hours, for a cost of $170 per helicopter and a cost of $36,380 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 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.
For the reasons discussed, I certify this proposed regulation:
1 Is not a significant regulatory action under Executive Order 12866, 2 Would not affect intrastate aviation in Alaska, and 3 Would not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PO 00000

Frm 00037

Fmt 4702

Sfmt 4702

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 adding the following new airworthiness directive:

Airbus Helicopters: Docket No. FAA2021
500; Project Identifier 2017SW069
AD.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by August 23, 2021.
b Affected ADs None.
c Applicability This AD applies to Airbus Helicopters Model EC130B4 and Model EC130T2
helicopters, certificated in any category.
d Subject Joint Aircraft Service Component JASC
Code: 6700, Rotorcraft Flight Control.
e Unsafe Condition This AD was prompted by a report of a jammed pilot collective pitch lever collective. The FAA is issuing this AD to prevent an untimely locking of the collective and subsequent reduced control of the helicopter.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions Within 90 hours time-in-service after the effective date of this AD or before the next autorotation training flight, whichever occurs first:
1 For each collective, remove the protective boot along the collective and measure the clearance between the edge of the collective tab hook a and the edge of the low pitch locking pin b as shown in Figure 1 of Airbus Helicopters Alert Service Bulletin ASB No. EC13067A019, Revision 0, dated February 23, 2016 ASB EC13067A019. If the clearance is less than 5 mm 0.196 in, before further flight:
i Adjust the clearance by following the Accomplishment Instructions, paragraph 3.B.3., of ASB EC13067A019.
ii Test the collective for proper engagement of the low pitch locking pin by following the Accomplishment Instructions, paragraph 3.B.4., of ASB EC13067A019.
2 Re-install the protective boot on the collective, ensuring that no boot folds have entered the space between the collective tab hook and the low pitch locking pin, by following the Accomplishment Instructions, paragraph 3.B.5., of ASB EC13067A019.
h Special Flight Permits Special flight permits are prohibited.

E:FRFM07JYP1.SGM

07JYP1