EASA Regulations for Cirrus Design Corporation SR22T

Cirrus Design Corporation (CDC) SR22 and SR22T Aeroplanes - Corrosion of Fuel Return Lines

The Special Airworthiness Information Bulletin SAIB CE-13-43R1 addresses potential corrosion issues in the fuel return lines passing through the Tecalemit Kilfrost-Sheepbridge-Stokes (TKS) deicing fluid tanks on Cirrus Design Corporation SR22 and SR22T airplanes equipped with ice protection. It highlights concerns about corrosion-induced pinholes in fuel return lines and softening of the TKS tank sealant in affected serial numbers. This bulletin provides information and recommendations but does not mandate regulatory action.