At what altitude is the last point to lower the flaps to 30° during the landing transition?

The last point to lower the flaps to 30° during the landing transition is at 250 feet AGL. This altitude is critical as it allows for a stabilized approach, ensuring that the aircraft is configured properly for landing while maintaining optimal control and safety. At 250 feet AGL, the aircraft is usually close enough to the runway to make any necessary adjustments to the approach without compromising safety or increasing workload significantly.

Positioning the flaps to the 30° setting at this point helps to maximize lift while providing the necessary drag for a descending flight path. It also assists in improving visibility and control, which is vital during the final stages of landing. This protocol aligns with standard operating procedures and flight manuals, which dictate flap configuration timings based on altitude to optimize performance and safety during landing.

Understanding the sequence of flap deployment is crucial for pilots, as it directly impacts the aircraft's aerodynamic characteristics and its landing performance.