Welcome Guest. Sign in or Signup

2 Answers

Magnetic vs True Heading

Asked by: 20001 views , , , ,
Aircraft Systems, General Aviation, Instrument Rating

What is the difference between Magnetic Heading and true Heading? How both are calculated in aircraft? What is wander angle in Heading calculation?

2 Answers

  1. Dave M on Dec 24, 2011

    Magnetic Heading is the direction that the aircraft is pointing in relation to Magnetic North.
    True Heading is the direction that the aircraft is pointing in relation to True North.
    Since True north (directly over the earth’s axis of rotation) and Magnetic north (somewhere over northern Canada) are not at the same place (magnetic north is, in fact, slowly moving over time), both headings often differ.To find out the difference at a particular location, look at the isogonic lines on your sectional (the purple dashed lines labeled 5°W, 3°E, etc…). They will indicate the magnetic deviation.
    So when you are in the aircraft, to get the Magnetic Heading, just read it off of the magnetic compass. To get the True Heading, simply take the reading from the magnetic compass and either add an easterly, or subtract a westerly, magnetic deviation.
    Not sure about the wander angle. 

    +17 Votes Thumb up 17 Votes Thumb down 0 Votes

  2. Matthew Waugh on Dec 26, 2011

    I refer you to the Internet:
    I have no idea if that’s accurate.

    -3 Votes Thumb up 2 Votes Thumb down 5 Votes

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.