Cessna 340 — Airworthiness Directives

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia, specifically addressing the Cessna 340 and 340A series aircraft. It outlines critical requirements for the retirement of certain components of the aircraft's wing and airframe based on fatigue life assessments. The directive is aimed at ensuring the safety and airworthiness of these aircraft by mandating compliance with specified operational limits regarding flight hours and number of flights. The document provides essential guidelines for operators and maintenance personnel to adhere to in order to maintain compliance and safety standards.

• Retire wing main spar lower cap and attachment fittings before 22,300 hours or 20,300 flights.
• Retire the airframe before 44,600 hours or 40,600 flights.
• For unknown flight counts, estimate by dividing total hours by an average flight time of 0.8 hours.
• Fatigue data covers only wing main spars; other parts' durability is unknown.
• Operators may apply for an extension of retirement life with proper substantiation.