Under Stabilized Approach Criteria, the airspeed should be within how many knots of Vref?

Under Stabilized Approach Criteria, the airspeed should be within how many knots of Vref?

• A. 10 knots
• B. 5 knots
• C. 15 knots
• D. 20 knots

Answer: (A)

Stabilized approach criteria emphasize keeping airspeed close to Vref so the aircraft maintains a predictable energy state and adequate control as you descend. Vref is the target landing speed for the current weight and configuration, and staying within a modest margin around it allows you to absorb normal gusts and pilot inputs without drifting into instability or overspeed/ stall risk. If the margin is too tight, gusts can push you outside the limit; if it’s too wide, you accumulate energy errors that complicate the final flare. So the best choice is the one that specifies a reasonable, close-to-Vref tolerance, supporting a stable and controllable approach.

Stabilized approach criteria emphasize keeping airspeed close to Vref so the aircraft maintains a predictable energy state and adequate control as you descend. Vref is the target landing speed for the current weight and configuration, and staying within a modest margin around it allows you to absorb normal gusts and pilot inputs without drifting into instability or overspeed/ stall risk. If the margin is too tight, gusts can push you outside the limit; if it’s too wide, you accumulate energy errors that complicate the final flare. So the best choice is the one that specifies a reasonable, close-to-Vref tolerance, supporting a stable and controllable approach.