Beechcraft Beechjet 400A — Maintenance Manual

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) of Australia, specifically addressing the Beechcraft Beechjet 400A model. It outlines necessary inspections and compliance requirements to ensure the safety and airworthiness of the aircraft. The directive mandates a visual inspection of the bleed air supply tube assemblies for any signs of damage, such as broken wire braiding or leaks in the bellows assemblies. The document emphasizes the importance of these inspections to prevent potential failures that could lead to hazardous conditions during flight. Compliance with the directive is required within specified flight hour intervals, ensuring ongoing safety for operators of the Beechjet 400A.

• Inspect bleed air supply tube assemblies for broken wire braiding or leaks.
• Replace any defective duct before further flight.
• Initial compliance required within 200 flight hours of the directive's effective date.
• Subsequent inspections must occur at intervals not exceeding 400 flight hours.
• Failure of the bleed air supply tube can lead to serious safety hazards.