×
Welcome to the CPL Navigation question and answer forum. Please feel free to post your questions but more importantly also suggest answers for your forum colleagues. Bob himself or one of the other tutors will get to your question as soon as we can.
Flying from the North of Australia
MosesK
Topic Author
MosesK created the topic: Flying from the North of Australia
Hey Guys,
Really need your help on this one. You are flying from from Northern Australia during the summer. To experience the earliest daylight you would fly?
a. South
b.North
c.East
d.West
I would say we fly east, but just need to know if this is correct?
John.Heddles replied the topic: Flying from the North of Australia
Just needs a bit of thinking about what you are doing. Let's presume that we have departed from wherever at 0-dark-30 so the question comes down to "which way to fly to see daylight first" ?
If you have a look at the daylight and darkness charts in the AIP, you can figure that flying north or south will approximate a daylight change rate of 1 degree for 2 minutes. Using the 15 degrees = 1 hour change for longitude, we would be looking at 1 degree = 4 minutes. End result is that we get a quicker result if we fly east or west rather than north or south. As we are reasonably near to the equator, the latitude and longitude distances per degree are not too different so, to a first order approximation, we might take them as being much the same for the purposes of this question.
Flying east would be the way to go.
Engineering specialist in aircraft performance and weight control.
