Installation of Cablecraft throttle, mixture, and propeller control cables.

Installation of Hartzell Model PHC-C3YD-2UF/FC9587DB-7 or Model PHC-C3YD-2UF/FC9587D-7 propellers

Installation of Hartzell model HC-C3YN-2UF/FC9587D-7 or HC-C3YN-2UF/FC9587DB-7 propellers.

Installation of detachable lead strap propeller deicers.

Installation of 4-blade MT-Propeller Model MTV-16-1-E-C- F/CF225-37a propellers on Cessna 421 C. EASA.A.S.03114

Installation of vortex generators on the wings and rudder and installation of a strake on the outboard side of each engine.

Installation of various propeller electrical de-icer models

Installation of Electronics Int'l digital automatic engine analyzer.

Installation of a 4-blade MT-Propeller Models MTV-16-I-E-C-F/CF225-37a on a Cessna 421C airplanes.

Installation of on-board engine analyzer system.