Thanks dcoded. Some very interesting information in regards to the Assessment.
Looks like the lines he drew were a great circle and a rhumb line.
The question on a critical engine, I believe the Boeing 737 does have a critical engine, and it is related to the crosswind direction. For example, if there is a crosswind from the right, the critical engine will be your right engine as if the right engine failed, the left engine will yaw the aircraft more towards the left.
Remember, the critical engine is defined as that engine which if failed would cause the greatest yawing moment.
Last edited by G CEXO; 25th Feb 2011 at 13:18.