Current aerospace gearing carburization technologies cannot effectively process internal surfaces in deep holes of high-aspect-ratio ( 3:1) gears. Advanced metallurgical research company, SANOVA, has developed and successfully demonstrated to Navy and OEMs new proprietary LINCARBOHEAT-53 technology for simultaneous carburizing of internal and external Pyrowear®53 steel surfaces of such gears. Different carburized case hardnesses and depths for internal and external gear surfaces have been achieved. Carburizing, hardening and final tempering steps are automatically performed in a single chamber of the same equipment without need for component relocation. Our process is highly energy, labor, material and operationally efficient. Target applications are gears 4” to 44” OD. Our goal is to commercialize and integrate this technology for gears in CH-53K helicopter program and other military and commercial applications.