Voglio sapere a riguardo di…

Federal Register / Vol. 86, No. 208 / Monday, November 1, 2021 / Rules and Regulations
60161

ESTIMATED COSTS
Action
Labor cost
Inspect HPP driving gear
Replace HPP driving gear for engines with an affected HPP driving gear.

.5 work-hours $85 per hour = $42.50
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
Cost per product
$0
145

$42.50
315

Cost on U.S.
operators $17,765
131,670

aircraft that might need this replacement:

ON-CONDITION COSTS
Action
Labor cost
Replace HPP driving gear for engines with an affected cylinder head.

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 AD may be covered under warranty, thereby reducing the cost impact on affected operators.

lotter on DSK11XQN23PROD with RULES1

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, and
VerDate Sep<11>2014

16:50 Oct 29, 2021

Jkt 256001

Parts cost $145

Cost per product $315

2 Will not affect intrastate aviation in Alaska.

dated September 30, 2021 MSBE4034/3
affected HPP driving gear.

List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

d Subject
The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

e Unsafe Condition
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:

20212220 Austro Engine GmbH Engines:
Amendment 3921793; Docket No.
FAA20210946; Project Identifier MCAI202101020E.
a Effective Date This airworthiness directive AD is effective November 16, 2021.
b Affected ADs None.
c Applicability This AD applies to Austro Engine GmbH
E4 and E4P model diesel piston engines equipped with either:
1 A cylinder head having part number P/
N E4A12500000 affected cylinder head, or 2 A high-pressure pump HPP driving gear, having P/N E4A30000201, with a serial number S/N listed in Chapter 1.4, Table 1 of Austro Engine Mandatory Service Bulletin No. MSBE4034/3, Revision No. 3,
PO 00000

Frm 00003

Fmt 4700

Sfmt 4700

Joint Aircraft System Component JASC
Code 8520, Reciprocating Engine Power Section.
This AD was prompted by reports of failure of the HPP driving gear and a subsequent investigation by the manufacturer, which determined that a certain batch of HPP
driving gears may have been damaged during assembly. The investigation also determined that affected engines equipped with an affected cylinder head were also subject to premature failure of the HPP driving gear.
The FAA is issuing this AD to prevent the failure of the HPP driving gear. The unsafe condition, if not addressed, could result in in-flight engine shut-down, forced landing, and damage to the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 For engines with an affected cylinder head, before further flight after the effective date of this AD, perform all actions in the Accomplishment/Instructions, paragraph 2.1., of Austro Engine Mandatory Service Bulletin No. MSBE4035/1, Revision No. 1, dated September 30, 2021 MSBE4035/1.
2 If, during the performance of the actions required by paragraph g1 of this AD, the HPP driving gear does not pass the inspection, as specified in paragraph 2.1. of Austro Engine MSBE4035/1, before further flight, replace the HPP driving gear with a part eligible for installation.
3 For engines equipped with an affected HPP driving gear, within the compliance time specified in Table 1 to paragraph g3
of this AD, as applicable, replace each affected HPP driving gear with a part eligible for installation.

E:FRFM01NOR1.SGM

01NOR1