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Federal Register / Vol. 86, No. 194 / Tuesday, October 12, 2021 / Proposed Rules develop on other products of the same type design.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Stratus Tool Technologies Mandatory Service Bulletin MSB SB001 Rev B, dated June 17, 2021. This MSB specifies procedures for removing a fiber gasket and replacing it with a copper gasket.

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 ADDRESSES.
Proposed AD Requirements in This NPRM
This proposed AD would require removal of the fiber gasket and replacement with a copper gasket.

56659

Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 6,300
engines installed on airplanes of U.S.
registry.
The FAA estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS
Action
Labor cost
Replace fiber gaskets with copper gaskets

2.5 work-hours $85 per hour = $212.50

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 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.

VerDate Sep<11>2014

16:14 Oct 08, 2021

Jkt 253001

Parts cost
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:
PART 39AIRWORTHINESS
DIRECTIVES

Authority: 49 U.S.C. 106g, 40113, 44701.
Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

Continental Aerospace Technologies, Inc.
and Continental Motors: Docket No.
FAA20210875; Project Identifier AD
202100675E.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by November 26, 2021.
b Affected ADs None.
c Applicability This AD applies to the reciprocating engine models identified in paragraphs c1 and 2
of this AD with an F&M Enterprises, Inc.
F&M or Stratus Tool Technologies, LLC
Stratus oil filter adapter installed per Supplemental Type Certificate SE8409SW, SE09356SC or SE10348SC.
1 Continental Aerospace Technologies, Inc. Type Certificate previously held by Continental Motors, Inc., and Teledyne Continental Motors C1251, C1252, C1452, C1452H, IO360C, IO360D, IO
360DB, IO360H, IO360HB, IO360K, IO360KB, IO470E, IO470S, IO550B, IO550G, O300B, O300C, O300D, O
300E, O470A, O470B, O470G, O

PO 00000

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Fmt 4702

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$34

$246.50

Cost on U.S.
operators $1,552,950

470J, O470K, O470L, O470M, O
470N, O470R, O470S, O470U O
47011, O47015, TSIO360E, TSIO360
EB, TSIO360F, TSIO360FB, TSIO360
GB, TSIO360LB, TSIO360MB, TSIO
360SB, TSIO520C, TSIO520CE, TSIO
520E, and TSIO520UB model reciprocating engines, and 2 Continental Motors Type Certificate previously held by Teledyne Continental Motors IO520A, IO520B, IO520BA, IO520BB, IO520C, IO520D, IO520J, and IO520L model reciprocating engines.
d Subject
1. The authority citation for part 39
continues to read as follows:

39.13

Cost per product
Joint Aircraft System Component JASC
Code 8550, Reciprocating Engine Oil System.
e Unsafe Condition This AD was prompted by reports of two accidents that were the result of power loss due to oil starvation. The FAA is issuing this AD to prevent loss of engine power. The unsafe condition, if not addressed, could result in failure of the engine, in-flight shutdown, and loss of control of the aircraft.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions Before accumulating 50 flight hours after the effective date of this AD or at the next scheduled oil change after the effective date of this AD, whichever occurs first, remove any F&M or Stratus oil filter adapter fiber gasket from service and replace it with a Stratus AN90028 or AN90029 oil filter adapter copper gasket in accordance with the Compliance Instructions, paragraph 6., pages 7 through 10 including all detailed instructions for Figure 5 through Figure 16, of Stratus Tool Technologies Mandatory Service Bulletin SB001 Rev B, dated June 17, 2021.
h Installation Prohibition After the effective date of this AD, do not install or reuse an F&M or Stratus fiber gasket in any F&M or Stratus Tool Technologies oil filter adapter.

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