![]() Maintenance work can also cause sizable amounts of compass error, resulting from the placement of magnetic metals (ferrous screws/bolts) near the compass. Routine Upkeepĭo you remember the last time your compass was checked for accuracy on a compass rose or with a calibrated site compass? Any changes in avionics (or even adding metallic objects to the glove box and around the panel) may affect the magnetic compass. In this article, we’ll address compass maintenance and replacement options, plus the procedure for calibrating one. ![]() Even calibration-which should be done regularly-can be a time-consuming project. Ever have one that leaked its fluid down the front of the instrument panel? The idea is to address the health of a compass before it comes to that. ![]() Given the primitive nature of a magnetic compass, owners are often shocked at the impressive invoices it can generate when it fails. ![]() That’s required for IFR, in addition to a compass. Don’t confuse this with the gyroscopic (or equivalent) directional indicator. Among the minimum equipment required for VFR and IFR flying, FAR 91.205 still lists the magnetic direction indicator as a must-have item.
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