Quiero saber acerca de...

49906

Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Rules and Regulations
date for MSB 319 73 2825, Version J, appears on the Safran Helicopter Engines Arrius 2 B1 Service Bulletin Index, No. X 319 L5 980 2, dated December 11, 2020.

Costs of Compliance The FAA estimates that this AD
affects 194 engines installed on helicopters of U.S. registry.

The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS
Action
Labor cost
Visual inspection of drive gear shaft splines;
cleaning and inspection of sleeve assembly splines.

2 work-hours $85 per hour = $170

The FAA estimates the following costs to do any necessary replacements that would be required based on the
Parts cost
results of the inspection. The agency has no way of determining the number of
$900

Cost per product
Cost on U.S.
operators
$1,070

$207,580

aircraft that might need these replacements:

ON-CONDITION COSTS
Labor cost
Replace sleeve assembly on high-pressure pump drive gear shaft.
Replace HMU

1 work-hour $85 per hour = $85

$898

$983

1 work-hour $85 per hour = $85

45,000

45,085

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.

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.

a Effective Date This airworthiness directive AD is effective October 12, 2021.

List of Subjects in 14 CFR Part 39

c Applicability This AD applies to Safran Helicopter Engines, S.A. Type Certificate previously held by Turbomeca S.A. Arrius 2B1, 2B1A, 2B2, and 2K1 model turboshaft engines.

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.

lotter on DSK11XQN23PROD with RULES1

Regulatory Findings The FAA has determined that 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 this AD:
1 Is not a significant regulatory action under Executive Order 12866,
VerDate Sep<11>2014

16:15 Sep 03, 2021

Jkt 253001

Parts cost
Cost per product
Action
39.13

Amended
2. The FAA amends 39.13 by:
a. Removing Airworthiness Directive 20140406, Amendment 3917764 79
FR 9990, February 24, 2014; and b. Adding the following new airworthiness directive:

20211705 Safran Helicopter Engines, S.A. Type Certificate previously held by Turbomeca S.A.: Amendment 39
21688; Docket No. FAA20210137;
Project Identifier MCAI202000269E.

PO 00000

Frm 00004

Fmt 4700

Sfmt 4700

b Affected ADs This AD replaces AD 20140406, Amendment 3917764 79 FR 9990, February 24, 2014.

d Subject Joint Aircraft System Component JASC
Code 7320Fuel Controlling System.
e Unsafe Condition This AD was prompted by in-flight shutdowns caused by interrupted fuel supply at the hydro-mechanical metering unit HMU. The FAA is issuing this AD to prevent interrupted fuel supply at the HMU.
The unsafe condition, if not addressed, could result in engine in-flight shutdown, forced landing of the helicopter, damage to the helicopter and injury to occupants.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 Within the compliance time specified in Table 1 to paragraph g1 of this AD, as applicable, and before re-installation of the HMU after each removal from the engine, visually inspect the drive gear shaft splines of the high-pressure pump, and clean and inspect the sleeve assembly splines in accordance with paragraphs 2.4.2 and 2.4.3, or 4.4.2 and 4.4.3, as applicable, of Safran
E:FRFM07SER1.SGM

07SER1