Voglio sapere a riguardo di…

Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Proposed Rules before July 2019, and any float supply hose manufactured before January 2014, performing a special inspection to verify that there is no blockage through the float supply hoses of the EFS inflation system.
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.

bulletin number would take a minimal amount of time at a nominal cost.
According to Safrans service information, some of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected individuals. The FAA does not control warranty coverage by Safran. Accordingly, all costs are included in this cost estimate.

Proposed AD Requirements This proposed AD would require, within 100 hours time-in-service TIS, removing each EFS supply hose and inspecting each end also referred to as fitting or banjo of the EFS supply hose using a certain plastic cable tie, and depending on the results of those inspections, removing from service certain parts and replacing those parts with airworthy parts. This proposed AD
would also require marking a green dot on the base of certain supply hoses and writing SB 0256921 above the external identification marking of the EFS with indelible ink. Finally, the proposed AD would prohibit installing any EFS supply hose manufactured before January 2014 unless it has been inspected in accordance with the proposed AD.

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.

Differences Between This Proposed AD
and the Transport Canada AD
The Transport Canada AD requires compliance within 600 hours air time or within the next 24-month inspection of the EFS, whichever occurs first, whereas this proposed AD would require compliance within 100 hours TIS. The Transport Canada AD limits the applicability to certain EFS supply hoses listed in SB 0256921, whereas this proposed AD would apply to certain EFS supply hoses manufactured before January 2014 but excludes EFS
supply hoses marked with SB 02569
21.
Costs of Compliance The FAA estimates that this proposed AD would affect 110 helicopters of U.S.
Registry. The FAA estimates that operators may incur the following costs in order to comply with this proposed AD. Labor costs are estimated at $85 per work-hour.
Removing and inspecting each EFS
supply hose would take about 0.75
work-hour, for an estimated cost of $64
per hose.
Installing or replacing each EFS
supply hose would take about 0.10
work-hour with a minimal parts cost, for an estimated cost of $9 per hose.
Marking each EFS supply hose with a green dot and the applicable service
VerDate Sep<11>2014

17:08 Mar 22, 2021

Jkt 253001

Authority for This Rulemaking
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. 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.
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 00005

Fmt 4702

Sfmt 4702

15435

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:

Bell Textron Canada Limited Helicopters:
Docket No. FAA20201170; Project Identifier MCAI202000720R.
a Applicability This airworthiness directive AD applies to Bell Textron Canada Limited Bell Model 429 helicopters, certificated in any category, with a Bell Emergency Flotation System EFS kit P/N 429706069101/103/105/
121/123/125/139/141/143/or 157
manufactured before July 2019, with a float supply hose manufactured before January 2014, installed, except for float supply hoses marked with SB 0256921 above the external identification marking.
b Unsafe Condition This AD defines the unsafe condition as a blocked float supply hose installed on an EFS. This condition could result in partial inflation of an EFS float during an emergency landing on water and subsequently preventing a timely egress from the helicopter.
c Comments Due Date The FAA must receive comments by May 7, 2021.
d Compliance You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
e Required Actions 1 Within 100 hours time-in-service TIS:
i Remove each EFS supply hose from the float and inspect each end of the EFS supply hose by inserting a plastic cable tie, 300 mm minimum 5 mm maximum 11.811 in.
minimum .196 in. maximum, into the holes of the related fitting as shown in Figure 1 of Safran Aerosystems Services Service Bulletin No. 0256921, Revision 00, dated March 23, 2020 SB 0256921.
Note 1 to paragraph e1i of this AD:
Each end of the supply hose may also be referred to as fitting or banjo.
ii If the cable tie does not pass through the hose, before further flight, remove the EFS supply hose from service and replace it with an airworthy part.
iii If the cable tie passes through the supply hose, mark a green dot with indelible ink on the base of the supply hose and write SB 0256921 above the external identification marking of the EFS with indelible ink.
2 As of the effective date of this AD, do not install an EFS supply hose manufactured before January 2014 on any helicopter unless
E:FRFM23MRP1.SGM

23MRP1