Under what condition is fuel crossfeed permitted in the King Air 350?

Fuel crossfeed is specifically designed to allow fuel from one tank to be drawn by the other engine when needed, such as during single-engine operations. This capability is important when one engine is inoperative, as it ensures that the remaining engine has an adequate supply of fuel to maintain power and control for safe flight. In situations where one engine is not functional, the other engine can utilize fuel from both sides, allowing for continued operation and control of the aircraft.

The conditions that govern fuel crossfeed are outlined in the aircraft’s operating procedures, emphasizing safety and effectiveness, particularly in emergency scenarios. Therefore, using crossfeed during single-engine operations is a critical practice for pilots to ensure safety and performance.