What action is needed if there is a discrepancy in the range markings on an instrument?

Consulting a certified mechanic is the appropriate action when there is a discrepancy in the range markings on an instrument. A certified mechanic possesses the necessary training and expertise to diagnose the issue effectively. They can determine whether it is a calibration issue, a mechanical fault, or if the instrument is beyond repair and needs replacing. It is important to rely on a professional since discrepancies could lead to inaccurate readings that impact safety and operational performance.

Manually adjusting the instrument may not resolve underlying issues and could further jeopardize accuracy if done improperly. Replacing the entire instrument may be unnecessary if the problem can be fixed or if it’s just a matter of recalibration. Ignoring the discrepancy risks operating with unreliable information, which is not advisable in aviation where precision and safety are crucial.