What does the yellow range on the airspeed indicator signify?

The yellow range on the airspeed indicator signifies the cautionary range. This range indicates speeds that are above the normal operating limits but below the point at which the aircraft will stall. It serves as a warning to pilots that they need to exercise caution when flying within this range, as it can be indicative of conditions that are potentially hazardous, such as turbulence or having the aircraft close to its performance limits.

Understanding the function of the yellow range is crucial for maintaining safety and ensuring proper aircraft handling, particularly in situations that may require quick decision-making or adjustments in flight.