How often must a compass be calibrated in order to be legal for IFR flight?

Q: What are the track error correction methods?

Double track error correction : double your drift angle left or right depending on which side of track you have drifted and fly that heading to regain your track. This will only work if you are less than halfway to your destination. Opening and closing angle method: use the 1:60 rule to find your opening and closing drift angles, and them together, and then correct your current heading left or right by the sum of the two angle to fly DIRECTLY to your destination. Visual track error method : fly to a known landmark on your planned track and then alter your heading to correct for drift to fly along your track to your destination.

Q: How often must a compass be calibrated in order to be legal for IFR flight?

Every 12 months the compass must be checked and calibrated. This is due to the magnetic deviation the compass experiences, which is caused by electromagnetic interferences within the flight deck.

Double track error correction: double your drift angle left or right depending on which side of track you have drifted and fly that heading to regain your track. This will only work if you are less than halfway to your destination.

Opening and closing angle method: use the 1:60 rule to find your opening and closing drift angles, and them together, and then correct your current heading left or right by the sum of the two angle to fly DIRECTLY to your destination.

Visual track error method: fly to a known landmark on your planned track and then alter your heading to correct for drift to fly along your track to your destination.

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What are the track error correction methods?

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How often must a compass be calibrated in order to be legal for IFR flight?

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