EASA SIB CE-18-24
Textron Aviation Beechjet 400, 400A, 400T & MU-300-10 Aeroplanes - Flap Cable Inspection
Summary
The Special Airworthiness Information Bulletin SAIB: CE-18-24 is an FAA informational bulletin addressing flap cable inspection concerns on Textron Aviation Beechjet Models 400, 400A, 400T, and MU-300-10 airplanes. It highlights the potential for undetected flap cable failures due to corrosion, which could affect flap operation. The bulletin is not mandatory and does not impose regulatory requirements but serves to inform operators and maintenance personnel.
What Changed
This bulletin introduces awareness of severe corrosion issues found in flap cables on specific Beechjet models, based on multiple reports of cable separation. It recommends increased inspection and maintenance practices, particularly cleaning and lubrication of flap control cables, but does not mandate regulatory action or an airworthiness directive.
Why It Matters
This information is critical for aviation professionals because corrosion-related flap cable failures can compromise flap system reliability and potentially affect flight safety. Operators and maintenance teams need to be vigilant to detect and address corrosion early to prevent flap asymmetry or failure. Following the recommendations helps maintain aircraft airworthiness and operational safety.
What To Do
Operators and maintenance personnel should follow Textron Aviation Communique #126, which advises cleaning and lubricating flap control cables at least every AB check, with increased frequency in wet or salt-laden environments. Regular inspections should focus on detecting corrosion and cable integrity in the flap well area. There is no regulatory compliance deadline, but adherence to these recommendations is strongly encouraged.