CESSNA 414A — Service Bulletins

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia, specifically addressing the Cessna 400 Series aircraft, including the Cessna 414A. It outlines mandatory requirements for inspections and modifications related to the engine mount beams due to reported cracking issues. The directive applies to all Cessna 414A aircraft with serial numbers 414A0001 through 414A1206. Compliance with the directive is crucial to ensure the safety and airworthiness of the aircraft, particularly in preventing potential engine failures that could lead to loss of control. The document specifies various kits and inspection methods that must be incorporated based on the aircraft's configuration and history of modifications.

• Cessna 414A aircraft with serial numbers 414A0001 through 414A1206 are affected by this directive.
• Mandatory inspections of engine mount beams must be conducted within specified timeframes: 1,600 hours or at the next engine overhaul.
• If cracks are found in the engine mount beam, specific actions must be taken based on the length and location of the cracks.
• Incorporation of Cessna Kits SK414-19-1, SK414-19-2, SK414-19-3, SK414-19-4, and SK414-19-5 is required depending on the aircraft's configuration.
• The directive emphasizes the need for modifications to eliminate ongoing repetitive inspections.