How can I correct the heading for this navigation problem? I'm a pilot trainee in Hungary and just encountered a navigation question problem which is from the PPL Training Questions book. Would be glad if someone can briefly explain how to do this typical question which I come across a lot.


  
    An aeroplane has a heading of 090°. The distance which has to be flown
    is 90 NM. After 45 NM the aeroplane is 4.5 NM north of the planned
    flight path. What is the corrected heading to reach the arrival
    aerodrome directly?
  
  
  a) 6° to the right, 
  
  b) 9° to the right,
  
  c) 18° to the right
  
  d) 12° to the right
The correct answer is 12 degrees.  The problem is as follows:



To determine wind correction use an E6-b or similar.

Set distance off course over distance already flown.  In this case, $\frac{4.5}{45}$. The degrees to eliminate wind drift will be under the rate arrow, in this case: 6.

Then, determine how much additional correction is needed to rejoin.  In this case, $\frac{4.5}{45}$ again.  You must add 6 more degrees to the first 6 to rejoin.

The total (therefore the answer) is 12.