Beechcraft King Air C90GTx — Airworthiness Directives

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) of Australia concerning the Beechcraft 90 & 65-90 (King Air) series aircraft. Specifically, it addresses the structural fatigue limitations of the wing components for certain models, including the C90. The directive mandates the retirement of specific wing structural components after they exceed a certain flight hour threshold, aimed at ensuring the safety and airworthiness of the aircraft. The document outlines compliance requirements and provides background information on the directive's issuance, including amendments and effective dates.

• The AD applies to Beechcraft Model 65-A90, B90, and C90 aircraft with wing components exceeding 10,000 hours.
• Operators must retire the center section and outer wing main spar lower caps after reaching the specified flight hours.
• Average mean flight cruise weight for compliance is set at 9,050 pounds, with specific conditions for higher weights.
• Only one spar cap replacement is allowed; further extensions require rigorous substantiation.
• The amendment is effective as of 21 February 2002.