What is the minimum amount of LOX liters required for a turnaround on a legacy aircraft?

The minimum amount of liquid oxygen (LOX) required for a turnaround on a legacy aircraft, such as those in the Navy's inventory, is established to ensure that all necessary operational and safety protocols are maintained. The selection of 6 liters is based on the operational needs of the aircraft, specifically to ensure that there is sufficient LOX for the crew and systems onboard without risking depletion during critical phases of flight.

In a turnaround scenario, the aircraft must be adequately prepared for its next mission, which includes refueling, replenishing supplies, and ensuring that systems like cockpit oxygen delivery are ready for immediate use. The 6 liters figure represents the minimum needed to support these requirements effectively and ensures that the crew can operate safely and without interference.

This operational standard takes into account typical consumption rates, environmental conditions, and the time needed for preparation between missions, giving a solid benchmark for ground support personnel to follow when managing aircraft resources.