Which of the following is true about ASDA?

The statement that ASDA (Accelerate-Stop Distance Available) includes the stopway length for aborting a landing is accurate. ASDA is defined as the length of runway plus any stopway that is available for aborting a takeoff. It allows pilots to understand the total distance they have available to safely bring the aircraft to a stop if they need to reject the takeoff after the decision point.

ASDA is particularly important during takeoff operations, as it provides a measure of safety by ensuring there is additional length beyond the runway to accommodate any potential stoppage during the takeoff phase. Thus, incorporating stopway length is crucial for fully understanding the operational limits under which a flight can proceed safely. The inclusion of the stopway is also vital for meeting regulatory requirements and ensuring safe flight operations.

The other options do not accurately reflect the role of ASDA. It is not limited solely to takeoff procedures, nor does it pertain to climb-out requirements or the landing approach length, making them less relevant in the context of ASDA's specific definition and purpose.