landing distance required

landing distance required

i. (LDR) The distance on the ground that an aircraft needs to make a normal approach from the screen height to the point when it comes to a halt.
ii. (LDRH) In the case of performance class 1 helicopters, the horizontal distance required to land and come to a full stop from a point 35 ft (10 m) above the landing surface. The short form for the term is LDRH.