EASA SIB 2007-32
FAA SAIB CE-07-45 - Flight Control Cable Fraying on aircraft built by Aeronca, Bellanca, Champion and American Champion Aircraft Corporation (ACAC)
Summary
FAA Special Airworthiness Information Bulletin CE-07-45 is an informational bulletin addressing flight control cable fraying on aircraft built by Aeronca, Bellanca, Champion, and American Champion Aircraft Corporation (ACAC). The affected models include various Aeronca and Champion aircraft such as the 7AC, 8KCAB, and 11AC series. The bulletin highlights the risk of flight control cable fraying, which could lead to loss of flight control if not detected during maintenance.
What Changed
This bulletin introduces awareness of potential flight control cable fraying issues in specified aircraft models and provides inspection and maintenance recommendations. It does not mandate regulatory action but advises operators and maintenance personnel to inspect cables thoroughly and consider using wire rope from Qualified Products List (QPL) manufacturers for replacements. It also emphasizes lubrication requirements for certain pulleys to prevent cable wear.
Why It Matters
Flight control cable integrity is critical for safe aircraft operation, and undetected fraying can result in control loss. Aviation professionals, including operators and maintenance organizations, must be vigilant in inspecting control cables, especially in areas where cables pass over pulleys. Proper inspection and maintenance help prevent in-flight control issues and ensure continued airworthiness of affected aircraft.
What To Do
Operators and maintenance personnel should perform thorough inspections of flight control cables every 100 flight hours, focusing on cable sections near pulleys. If fraying or damage is detected, cables should be replaced preferably with wire rope from QPL-qualified manufacturers. Additionally, lubrication of elevator trim and flap pulleys should be conducted at intervals not exceeding those specified in the aircraft service manuals.
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