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2020-25-12

final rule

Airworthiness Directives; Superior Air Parts, Inc. Engines and Lycoming Engines Reciprocating Engines With a Certain SAP Crankshaft Assembly

Unsafe Condition: The presence of a white layer on the crankshaft assembly, which is brittle and can lead to spalling or fatigue cracking of the crankshaft assembly as a result of the normal mechanical loads during ...

Effective: Jan 15, 2021 Category: engine Compliance: This AD is effective January 15, 2021.

Why matched: Airworthiness Directives; Superior Air Parts, Inc. Engines and Lycoming Engines Reciprocating Engines With a Certain SAP Crankshaft Assembly

Technical illustration of an aircraft turbine engine assembly
Problem area Engine