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Federal Register / Vol. 86, No. 33 / Monday, February 22, 2021 / Proposed Rules
10503

ON-CONDITION COSTS
Action
Labor cost
Replace fuel filter pre-blockage pressure switch

2 work-hours $85 per hour = $170

The FAA has included all known costs in its cost estimate. According to the manufacturer, however, some of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected operators.
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.

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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 above, 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.

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18:29 Feb 19, 2021

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The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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 adding the following new airworthiness directive:

Safran Helicopter Engines, S.A. Type Certificate Previously Held by Turbomeca, S.A.: Docket No. FAA
20201180; Project Identifier MCAI
202000517E.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by April 8, 2021.
b Affected ADs None.
c Applicability This AD applies to Safran Helicopter Engines, S.A., type certificate previously held by Turbomeca, S.A. Arriel 2B, 2B1, 2C, 2C1, 2C2, 2S1 and 2S2 model turboshaft engines with a fuel filter pre-blockage pressure switch, part number 9 550 17 200
0, and serial number S/N 00001 to 12753, inclusive, and S/N A0001 to A0247, inclusive, installed.
d Subject Joint Aircraft System Component JASC
Code 7321 Fuel Control/Turbine Engines.
e Unsafe Condition This AD was prompted by reports from the manufacturer of non-conforming fuel filter pre-blockage pressure switches manufactured before December 2016. The FAA is issuing this AD to prevent the non-conformity of the fuel filter pre-blockage pressure switch, which can cause its non-activation in case of fuel system contamination, with consequent opening of the by-pass without indication in the cockpit. The unsafe condition, if not addressed, could result in uncommanded inflight shut-down of the engine, an emergency autorotation landing on a single engine helicopter, or an uncommanded in-flight shut-down of both engines on a twin engine helicopter.

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Parts cost $225

Cost per product $395

f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 After the effective date of this AD, during the pre-flight inspection for the first flight of each day the engine is operated, perform a visual inspection of the fuel filter by-pass indicator to determine if the fuel filter by-pass indicator pop-up has been activated.
2 Within the next 300 hydro-mechanical metering unit HMU operating hours or 180
days after the effective date of this AD, whichever occurs first, perform an operational test of the fuel filter pre-blockage pressure switch in accordance with Task 73
2301750801A01Pre-Blockage Pressure Switch of the Fuel Filter Tests Electrical, dated November 30, 2012, the Task from the Turbomeca Arriel 2 S1 Maintenance Manual.
3 During any visual inspection required by paragraph g1 of this AD, if the fuel filter by-pass indicator pop-up has been activated or, during the operational test required by paragraph g2 of this AD, any discrepancy is detected as described by the Task, before next flight, replace the fuel filter pre-blockage pressure switch with a part eligible for installation.
4 The actions required by paragraph g1
of this AD may be performed by the owner/
operator pilot holding at least a private pilot certificate, and must be entered into the aircraft records showing compliance with this AD, in accordance with 14 CFR
43.9a1 through 4 and 14 CFR
91.417a2v. The records must be maintained as required by 14 CFR 91.417, 121.380, or 135.439.
h Terminating Action Passing the operational test no failure detected of the fuel filter pre-blockage pressure switch, as required by paragraph g2 of this AD, or replacement of the fuel filter pre-blockage pressure switch with a part eligible for installation, constitutes a terminating action for the repetitive visual inspections required by paragraph g1 of this AD for that engine.
i Definition A part eligible for installation is a fuel filter pre-blockage pressure switch that is not listed in the Applicability, paragraph c, of this AD, or a fuel filter pre-blockage pressure switch that has passed the operational test no discrepancies detected required by paragraph g2 of this AD.
j Alternative Methods of Compliance AMOCs 1 The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14

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