The 310 has a very basic fixed compass card ADF indicator. This means that unless your current heading happens to be North then some mental maths is required to calculate the difference in the indicated and actual required heading. To simplify it, just ignore the compass rose and think of N as the nose of your aircraft and S as it’s tail, the needle then simply points to where the station is in relation to this nose to tail line through your aircraft. You simply steer towards the head of the needle to get it pointing directly up as normal.
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