Increase maximum ramp weight to7245 lbs. and maximum takeoff weight to 7210 lbs. and installation of optional McCauley model3AF32C515/82NLA-4.0 propellers.

Install propeller governor control bracket.

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

Installation of Hartzell model PHC-C3YF-2UF/FC7693DF or PHC-C3YF-2UF/FC7693DFB propellers

Installation of various SMR Technologies electrical propeller deicer models.

Installation of detachable lead strap propeller deicers.

Installation of various propeller electrical de-icer models

Installation of Electronics Int'l digital automatic engine analyzer.

Installation of on-board engine analyzer system.

Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line (47J series w stc's SH4-235SW, SH4-826SW or SH479SW)