Mnemonic. 1  V: vertebral artery. 2  I: internal thoracic artery. 3  T: thyrocervical trunk I: inferior thyroid artery.  C: costocervical artery S: superior intercostal 1  artery. D: dorsal scapular artery.
Aircraft Engine Governors Repairs, Overhaul and Refurbishing, overhaul services, exchanges and technical support for all major governor manufacturers including McCauley, Hartzell, MT-Propeller, Woodward, Hamilton Standard, Aero Technologies and Jihostroj.
Propeller manufactures then decided to put a governor on the propeller to control RPM. Thus the pilot would select a propeller RPM for the condition of flight that he was in, and through oil pressure, centrifugal forces, feather springs and speeder springs, the governor would maintain selected RPM. The B1900 is a constant speed propeller controlled through three governors. The primary governor controls RPM from 1450 to 1700 RPM.