Service Bulletin

SB 553

Lycoming Engines

Issued: 2018-02-09
Models covered: 1

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SB 553

Lycoming Engines

Issued 2018-02-09

NOT AN FAA REQUIREMENT — This is a manufacturer document. It is not an FAA Airworthiness Directive and compliance is not required by 14 CFR 39 unless an AD cites it.

Crankshaft Inspection for Lycoming Six Cylinder Turbocharged Engines

Source: Lycoming Engines, retrieved 2026-09-01

View on Lycoming Engines' site

Applies to 1 model in our index

Lycoming O-540 Lycoming Engines · engine