There are several cases where declared distances supplied by authoritative data differs from published values in AODB:
- Obstacle(s) may be present within obstacle splay within or adjacent to the clearway. In such circumstances, a reduction is made to the clearway length to one metre short of the obstacle distance.
- Where ASDA is shorter than TORA, TORA will be defaulted to ASDA
- Take Off Distance Available and Accelerate Stop Distance Available are both limited to a maximum of 1.5 times the length of TORA
If there are any questions as to any operational limitations, please submit a request via the support portal through the N-Performance (AODB/ToDC) link.