Federal Register - November 19, 2021
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Source: Federal Register
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Federal Register / Vol. 86, No. 221 / Friday, November 19, 2021 / Rules and Regulations
a. Removing Airworthiness Directive 20210904, Amendment 3921517 86
FR 21637, April 23, 2021; and b. Adding the following new airworthiness directive:
d Subject Joint Aircraft System Component JASC
Code 8550, Reciprocating Engine Oil System.
a Effective Date This airworthiness directive AD is effective December 27, 2021.
e Unsafe Condition This AD was prompted by reports of an oil pump blockage on the E4 model diesel piston engines. The FAA is issuing this AD to prevent failure of the engine lubrication system. The unsafe condition, if not addressed, could result in failure of the engine, in-flight shutdown, and loss of the airplane.
b Affected ADs This AD replaces AD 20210904, Amendment 3921517 86 FR 21637, April 23, 2021.
f Compliance Comply with this AD within the compliance times specified, unless already done.
c Applicability This AD applies to all Austro Engine GmbH E4 and E4P model diesel piston engines.
g Required Actions For Austro Engine GmbH E4 and E4P
model diesel piston engines having an oil pump, part number P/N E4A50000BHY,
20212410 Austro Engine GmbH:
Amendment 3921831; Docket No.
FAA20210781; Project Identifier AD
202100775E.
with a serial number S/N listed in paragraph 1.2., Engines Affected, of Austro Engine GmbH Mandatory Service Bulletin No. MSBE4030/4, Revision No. 4, dated March 30, 2021 the MSB, within the compliance time specified in Table 1 to paragraph g of this AD or before further flight, whichever occurs later:
1 Remove the oil pump, P/N E4A50
000BHY, 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.
2 Replace the oil filter and engine oil using the Accomplishment/Instructions, paragraph 2.2.1 or paragraph 2.2.2, of the MSB, as applicable.
BILLING CODE 491013P
Engine Group
Engine Flight Hours FHs Since New as of May 10, 2021 the effective date of AD
2021-09-04
Compliance Time after May 10, 2021, the effective date of AD 2021-09-04
Group 1 engines and Group 2 engines
10 FHs or less
Within 30 days or before accumulating 10 FHs, or during the next scheduled maintenance, whichever occurs first
Group 1 engines
More than 10 FHs, but less than 50 FHs
Within 3 months or before accumulating 70 FHs since new, or during the next scheduled maintenance, whichever occurs first
Group 1 engines
50 FHs or more
Within 3 months or 20 FHs, or during the next scheduled maintenance, whichever occurs first
Group 2 engines
More than 10 FHs
Within 3 months or 100 FHs, or during the next scheduled maintenance, whichever occurs first
h No Reporting Requirements
i Installation Prohibition
The reporting requirements in the Accomplishment/Instructions, paragraph 2.2., of the MSB, are not required by this AD.
After the effective date of this AD, do not install onto any engine an oil pump, P/N
BILLING CODE 491013C
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Table 1 to Paragraph g - Replacement of the Oil Pump, Oil Filter, and Engine Oil
