CESSNA 172Q CUTLASS — Airworthiness Directives

This document is an Airworthiness Directive (AD) issued by the FAA concerning Lycoming Engines, specifically models 320, 360, and 540 series, which are equipped with certain Engine Components, Inc. (ECi) cylinder assemblies. The directive aims to address safety concerns related to potential cylinder head separations that could lead to engine failure and loss of control of the aircraft. The AD outlines compliance requirements for visual inspections and compression tests of the affected cylinder assemblies, as well as replacement protocols for those found to be defective. It is crucial for operators of affected engines to adhere to the specified compliance times to ensure safety and airworthiness.

• The AD is effective from February 4, 2010.
• It applies to specific Lycoming Engines models with ECi cylinder assemblies.
• Operators must perform visual inspections and compression tests within specified timeframes.
• Cracked cylinder assemblies must be replaced before further flight.
• Group 'B' ECi cylinder assemblies cannot be installed after the AD's effective date.