Beechcraft 99 Airliner — Service Bulletins

This document is an Airworthiness Directive (AD) schedule for the Beechcraft C90A, C90GT, and C90GTi series aircraft, issued on May 27, 2010. It outlines mandatory inspections, modifications, and compliance requirements to ensure the airworthiness of these aircraft models. The directives are applicable to specific serial numbers and address various components and systems, including the oxygen system, windows, wing attachments, elevator systems, and more. Each directive specifies the compliance timeline and references relevant FAA regulations. This document serves as a critical resource for maintenance personnel and operators to maintain safety and compliance with aviation regulations.

• Compliance with ADs is mandatory for safety and airworthiness.
• Specific serial numbers are affected by each directive, requiring careful tracking.
• Inspections must be performed within specified time frames, often within 50 to 150 hours TIS.
• Modifications may be required to prevent loss of control or structural failure.
• Flight manual revisions are necessary to address severe icing conditions.