These Sigma Tek Gyros are direct replacements for the 52D54, 52D66, and 52D67 Century Autopilot Gyros. These units and their lighted alternates are FAA - PMA approved by identicality for use in Century CIIB, CIII, CIV, and CIVFD Autopilot installations. *All lighted units must order light tray separately.
Instruments - Directional Gyros - Sigma-Tek
