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Federal Register / Vol. 86, No. 149 / Friday, August 6, 2021 / Rules and Regulations List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

manufacturer in the Accomplishment/
Instructions, paragraph 2.2, of the MSB, are not required by this AD.

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

After the effective date of this AD, do not install onto any engine an oil pump with P/
N E4A50000BHY and an S/N listed in paragraph 1.2., Engines Affected, Tables 2
and 3, of the MSB.

PART 39AIRWORTHINESS
DIRECTIVES

For the purpose of this AD, a part eligible for installation is an oil pump that is not P/
N E4A50000BHY or an oil pump P/N
E4A50000BHY and an S/N that is not listed in paragraph 1.2., Engines Affected, Tables 2 and 3, of the MSB.

j Definitions
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:

20211701 Austro Engine GmbH:
Amendment 3921684; Docket No.
FAA20210654; Project Identifier MCAI202100682E.
a Effective Date This airworthiness directive AD is effective August 23, 2021.
b Affected ADs None.

d Subject Joint Aircraft System Component JASC
Code 8550, Reciprocating Engine Oil System.
e Unsafe Condition This AD was prompted by a report of oil pressure loss on an E4 model diesel piston engine. The FAA is issuing this AD to prevent failure of the engine. The unsafe condition, if not addressed, could result in failure of the engine, in-flight shutdown, and loss of the airplane.

jbell on DSKJLSW7X2PROD with RULES

f Compliance Comply with this AD within the compliance times specified, unless already done.

h No Communication or Reporting Requirements The instructions to contact the manufacturer and report information to the
Jkt 253001

Special flight permits, as described in Section 21.197 and Section 21.199 of the Federal Aviation Regulations 14 CFR 21.197
and 21.199, are subject to the requirements of paragraph k1 and 2 of this AD.
1 Operators of a twin-engine airplane that has one or two Model E4 engines in configuration B or C or Model E4P
engines installed may perform a one-time non-revenue ferry flight to a location where the engine can be removed from service. This ferry flight must be performed with only essential flight crew.
2 All other ferry flights are prohibited.

1 The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14
CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ECO Branch, send it to the attention of the person identified in Related Information. You may email your request to: ANE-AD-AMOC@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.
m Related Information
g Required Actions Before further flight after the effective date of this AD, remove the oil pump, part number P/N E4A50000BHY, with a serial number S/N listed in paragraph 1.2., Engines Affected, Tables 2 and 3, of Austro Engine GmbH Mandatory Service Bulletin No. MSBE4031/1, Revision No. 1, dated July 1, 2021 the MSB, from service and replace with a part eligible for installation using the Accomplishment/Instructions, paragraph 2.2.1 or paragraph 2.2.2., of the MSB, as applicable.

16:05 Aug 05, 2021

k Special Flight Permit
l Alternative Methods of Compliance AMOCs
c Applicability This AD applies to Austro Engine GmbH
E4 and E4P model diesel piston engines.

VerDate Sep<11>2014

i Installation Prohibition
1 For more information about this AD, contact Wego Wang, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387134; fax: 781 2387199; email:
wego.wang@faa.gov.
2 Refer to European Union Aviation Safety Agency EASA AD 20210143E, dated June 16, 2021, for more information.
You may examine the EASA AD in the AD
docket at https www.regulations.gov by searching for and locating Docket No. FAA
20210654.
n Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference IBR of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.

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2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
i Austro Engine Mandatory Service Bulletin No. MSBE4031/1, Revision No. 1, dated July 1, 2021.
ii Reserved 3 For Austro Engine service information identified in this AD, you may contact Austro Engine GmbH, Rudolf-Diesel-Strasse 11, 2700
Weiner Neustadt, Austria; phone: +43 2622
23000 2525; website: www.austroengine.at.
4 You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781 2387759.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on August 2, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202116895 Filed 8421; 11:15 am BILLING CODE 491013P

DEPARTMENT OF ENERGY
Federal Energy Regulatory Commission 18 CFR Parts 153 and 157
Docket No. RM2015002; Order No. 871
C

Limiting Authorizations to Proceed With Construction Activities Pending Rehearing Federal Energy Regulatory Commission, Department of Energy.
ACTION: Order addressing arguments raised on rehearing and clarification.
AGENCY:

The Federal Energy Regulatory Commission addresses requests for rehearing and clarification of Order No. 871B.
DATES: The effective date of the document published on May 13, 2021
86 FR 26,150, is confirmed: June 14, 2021.
SUMMARY:

Tara DiJohn, Office of the General Counsel, Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC
20426, 202 5028671, tara.dijohn@
ferc.gov.

FOR FURTHER INFORMATION CONTACT:

SUPPLEMENTARY INFORMATION:

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