Performance / obstacle clearance
In our manuals it says that in case of an engine failure :our performance calculations will take into account all obstacles within 600 meters of either side of the runway extended centreline.
Our manuals also state that for the Sim check we need to fly headings/tracks within the tolerance limits of +\- 10 degrees for single engine.
On a wide body jet if you deviate +\- 10 degreee you will not stay within the 600M "protected area " for long !
I know that the limitations -/+ 10 degrees are for skill test/Check and the obstacle clearance limits of 600 M are for the Pan Ops regulatory but aren't they suppose to compliment each other ?