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One more question to the experts:
When doing 1-in-60 exercises I am having a problem to calculate the New HDG after Intercept (M).
For example:
Given FPT= 273 M, Heading held= 274 M, Distance along Track= 80 nm, Distance off Track = 13 nm left, Distance to re-join Track= 50 nm.
I have found Track Error= 10 , TMG = 263 , Drift = 11 left, Closing angle = 16, TTI = 289, and HDG to Intercept = 300 M.
I just missing the step of how to calculate the new HDG after Intercept.

Hi Nikita,
Now that you have calculated the drift, 11° in this example, you can now apply it to your FPT. This will give you a new HDG which should keep you on track much better than what you originally planned. So we end up with planned track of 273° + 11° to the right = New HDG 284°.

Always found DR nav to be the most fun to do and it has saved my neck more than once when things like GPS and navaids failed.

The actual question in the workbook is Alt: 13800 ft, QNH 1022 and OAT 22 degrees C. This gives the Pressure altitude of 13530 ft. There was a misprint in the first post which mentioned the QNH being 1015. I have edited Nikita's original post to make the QNH 1022.

If the QNH was indeed 1015, your calculation would be correct