What is the required minimum level of fuel in the unit?

The required minimum level of fuel in a unit is set at a level that ensures operational reliability and safety. Maintaining a minimum of three-quarters (¾) tank of fuel is crucial because it allows for sufficient fuel availability during extended operations or emergencies. This prevents scenarios where the unit might run out of fuel unexpectedly, which can lead to equipment failure or inability to perform in critical situations. Keeping the fuel level at this threshold also helps mitigate the risk of air entering the fuel system, which can cause problems with the engine's performance. Thus, the choice of three-quarters tank reflects a standard practice aimed at ensuring readiness and reliability, especially in environments where consistent operation is essential.