CESSNA 414 — Maintenance Manual

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia, specifically addressing safety concerns related to the avionics bus circuit breaker switch in various Cessna 400 series aircraft, including the Cessna 414. The directive outlines the necessary inspections and replacement procedures for affected circuit breaker switches to ensure the safety and airworthiness of the aircraft. It is crucial for maintenance personnel and operators of the Cessna 414 to comply with the requirements set forth in this directive to prevent potential failures that could compromise flight safety. The document includes detailed applicability, requirements, compliance timelines, and background information regarding the safety issues identified with the circuit breaker switches.

• The Cessna 414 is included in the Airworthiness Directive AD/CESSNA 400/113.
• Affected circuit breaker switches must be inspected for part number and date code.
• If the part number is CM3589-50, 593-250-101, 593-250-102, W31-X2M5A-50, or W31-X1000-50 and the date code is earlier than 0434, replacement is required within 1,000 hours TIS.
• Compliance timelines include inspections within 200 hours TIS or at the next scheduled inspection, and replacements before further flight if necessary.
• The directive is effective as of December 22, 2005.