Special Airworthiness Information Bulletin (SAIB) CE-11-29R1 informs registered owners/operators of Cessna 414A and 421C aircraft with S-TEC Corporation (S-TEC) Supplemental Type Certificate (STC) SA08996AC-D (system 55/55X) with optional Trim installed, Cessna 414A and 421C aircraft with S-TEC STC SA7787SW-D (system 65) with optional Trim installed, and Cessna 414A and 421C aircraft with S-TEC STC SA7790SW-D (system 60) with optional Trim installed, of an airworthiness concern. Specifically, this SAIB provides guidance on procedures for inspection of the rudder trim tab blocks which were relocated during the installation of the STC. This SAIB also provides guidance on inspecting phenolic blocks for wear along the flight control system.
414, STEC Autopilot, S-TECH Autopilot

