How is the commander expected to react if in-flight fuel checks indicate insufficient fuel remaining?

The expectation for a commander when faced with in-flight fuel checks indicating insufficient fuel remaining is to divert to any safe aerodrome. This action reflects a prioritization of safety for both the aircraft and its occupants. In situations where fuel levels are inadequate for safe arrival at the intended destination, diverting to the nearest suitable airfield allows the pilot to land while still having a margin of safety. This decision minimizes the risks associated with fuel starvation and potential emergency landings.

Proceeding to the original destination without adequate fuel poses significant risks, including the possibility of running out of fuel before reaching the airfield. Continuing as normal is equally risky, as it ignores the fuel state and may lead to an emergency landing situation. While calling for emergency assistance may be necessary in some situations, the proactive step of diverting to a safe airport is the more effective measure to ensure passenger safety and aircraft integrity.