What is the final approach speed with a take-off flap setting when wind speed is reported at 10 knots gusting to 20 knots?

The final approach speed with a take-off flap setting is determined by different factors, including the aircraft's weight, configuration, and the operational conditions such as wind speed. For the T-6B, the final approach speed is typically calculated using the aircraft's indicated airspeed (KIAS) based on standard guidelines.

In conditions where wind is reported at 10 knots gusting to 20 knots, the consideration for gusty winds is crucial. Pilots often increase their approach speeds in gusty conditions to maintain better control and ensure a safe margin above stall speed. The procedure is to add a buffer to the normal final approach speed to compensate for potential wind turbulence.

The choice of 110 KIAS is based on the recommended adjustment for a take-off flap setting under gusty wind conditions. This speed allows the pilot to maintain responsive control of the aircraft while ensuring that they safely clear the stall margin amid fluctuating wind conditions, thereby promoting a stable approach.

In contrast, other speeds listed would either be too low for the gust conditions or unnecessarily high, potentially leading to complications during landing. Hence, 110 KIAS appropriately balances safety and performance in the described scenario.