Above what fuel weight may 3 to 5 knots above final turn and final airspeed be required to maintain on speed AOA?

Maintaining the correct airspeed during the final approach in the T-6A is critical for ensuring a stable landing. As the fuel weight decreases, the aircraft’s performance characteristics change, including how it handles and its stall characteristics. In general, as fuel weight increases, the aircraft requires adjustments in airspeed to maintain the on-speed angle of attack (AOA), which is crucial for ensuring that the wings are generating enough lift to avoid stalling.

When the fuel weight exceeds a certain threshold, which is indicated here as above 700-800 pounds, it is common to require an adjustment of 3 to 5 knots above the normal final approach airspeed. This increase compensates for the additional weight and helps maintain proper lift and control of the aircraft. Adjusting airspeed while approaching the landing phase helps ensure that the aircraft remains within a safe flight envelope, particularly under heavier fuel loads which may require more precise control inputs.

Understanding this threshold is essential for pilots because it helps to establish the proper airspeed parameters necessary to maintain safe handling characteristics during landing, especially in a high-performance aircraft like the T-6A. The adjustment becomes crucial at higher weights to ensure that pilots maintain responsiveness and manage the increased inertia that comes with added fuel weight.