Beechcraft 99 Airliner — Airworthiness Directives

This document is a summary of FAA Airworthiness Directives (ADs) specifically related to Hartzell Propellers and their application to various aircraft, including the Beechcraft 99 Airliner. It provides a comprehensive list of ADs that affect different models of propellers and outlines the required compliance actions to ensure safety and airworthiness. The document is intended for aircraft operators, maintenance personnel, and pilots who need to stay informed about mandatory inspections and maintenance actions required by the FAA to prevent potential failures and ensure the continued airworthiness of their aircraft. Each AD includes specific instructions regarding inspections, replacements, and compliance timelines, emphasizing the importance of adhering to these directives to maintain flight safety.

• AD 2009-22-03 requires inspections of HC-2Y series propellers on Lycoming engines.
• AD 2008-13-28 mandates inspections for left-hand rotating HC-2Y series propellers due to crack risks.
• AD 2007-26-09 applies to all Hartzell models with aluminum blades, focusing on fatigue crack prevention.
• AD 2006-24-07 requires inspections for wear on Hartzell and McCauley propellers serviced by specific repair stations.
• AD 2005-14-12 mandates inspections of propeller mounting bolts to prevent separation.