Final answer:
The Touch Down Zone (TDZ) is the area on a runway where a plane should touchdown during landing, marked with white paint indicating the TDZ markings. Landing in this zone reduces the risk of over-speeding or overrunning the runway.
Step-by-step explanation:
The Touch Down Zone (TDZ) refers to the area of a landing zone on a runway where a plane should touchdown during a landing. It is the region of the runway that is marked with white paint indicating the TDZ markings. These markings help pilots to aim for a precise touchdown point, ensuring a safe landing.
TDZ markings are typically found at the beginning and end of the touchdown zone and often extend for a distance of about 2,500 feet down the runway.
When a pilot lands the plane in the Touch Down Zone, it reduces the risk of over-speeding or overrunning the runway, which can be dangerous.