EASA SIB 2007-36
FAA SAIB CE-01-41R2 - Cessna 150, 172, P172, 175, 180, 182, 185, 205, 206, 210, 336 and 337 Aeroplanes - Possible Cracks in Plastic or Non-Metallic Control Wheels
Summary
FAA Special Airworthiness Information Bulletin CE-01-41R2 addresses the potential for cracks in plastic or non-metallic control wheels installed on Cessna 150, 172, P172, 175, 180, 182, 185, 205, 206, 210, 336, and 337 series airplanes manufactured between 1960 and 1964. The bulletin informs owners, operators, and maintenance personnel about this issue and provides guidance on inspection and replacement procedures. This information is also referenced in EASA Safety Information Notice 2007-36.
What Changed
This bulletin does not introduce new mandatory requirements but updates stakeholders on the ongoing concern regarding cracks in plastic control wheels. It clarifies that the risk is minimal and that mandatory airworthiness directive action is not warranted at this time. The FAA recommends continued visual inspections and proof load tests as per Cessna Service Letter 64-8, with replacement of cracked or failed control wheels by metallic ones.
Why It Matters
This information is important for aviation professionals because it highlights a potential structural issue that could affect flight controls on a large number of older Cessna aircraft. Proper inspection and maintenance help ensure flight safety and prevent incidents related to control wheel failure. Maintenance and compliance teams must be aware of the recommended inspection procedures to maintain airworthiness and avoid operational risks.
What To Do
Owners, operators, and maintenance technicians should emphasize thorough visual inspections of plastic or non-metallic control wheels during each 100-hour or annual inspection, focusing on the inside upper corners. If cracks are found or the control wheel fails a pull test (which may be conducted at a reduced force of 30 pounds), the control wheel must be replaced with a metallic one before further flight. Follow the procedures outlined in Cessna Service Letter 64-8 for inspection and replacement guidance.
AI-generated summary from official EASA source document. Always verify against the original.