Fuel Topping? in C-130 Technical Posted January 25, 2008 You are correct about the different languages between the different military services, different countries. Then you throw in the fact that some of the US Navy Pilots and FE\'s came from or went to the P-3\'s. Now talk about two totally different designed and thought process aircraft. Even though the engines were basically the same, and I have been to Field Maintenance school at the Allison (Detroit Diesel or RR) Factory in Indianapolis for the -10W/-14 engines and have been back to Intermediate Maintenance school for the -15/-16 engines, same parts or components are called anywhere from 2 to 4 different names. And fuel governing for the A-10W is 103.8% to 106.0% and the A-14 is 103.9% to 106.4%. Bottom line is that the main purpose for the fuel control to start control engine RPM in those ranges are to ensure the Propeller Pitchlock Regulator has ported the propeller controlling fluid (by 103.5%) to pitchlock the propeller.