EASA SIB CE-12-34
Hawker Beechcraft Model 76 (Duchess) Aeroplanes - MLG Cracks in A-Frame Assemblies - post-AD 97-06-10
Summary
The Special Airworthiness Information Bulletin SAIB: CE-12-34 addresses cracking issues in the main landing gear "A" frame assemblies with part numbers 105-810023-75 and 105-810023-76 on Hawker Beechcraft Model 76 (Duchess) airplanes. This bulletin provides information on the continued occurrence of cracks despite previous Airworthiness Directive 97-06-10, which allowed installation of these improved assemblies. The bulletin is informational and does not mandate new regulatory action.
What Changed
This bulletin highlights that cracking and failures of the improved "A" frame assemblies continue to be reported after AD 97-06-10, which had previously exempted these parts from repetitive inspections. It recommends ongoing inspections every 100 hours despite the lack of a current mandatory directive. The FAA also encourages reporting of any cracking or failures to support fleet safety.
Why It Matters
This information is critical for operators, maintenance personnel, and compliance teams managing Hawker Beechcraft Model 76 aircraft, especially those used in training with high landing cycle counts. Continued vigilance through inspections helps prevent potential landing gear failures that could compromise aircraft control during landing or taxi operations. Reporting issues aids the FAA and manufacturer in understanding and mitigating the risk.
What To Do
Operators and maintenance personnel should continue performing at least 100-hour repetitive inspections of the main landing gear "A" frame assemblies with part numbers 105-810023-75 and 105-810023-76. They should also submit detailed reports of any cracking or failures to the Wichita Aircraft Certification Office using the provided reporting form or email. No new compliance deadlines are mandated, but ongoing monitoring is strongly recommended.