Concerns about possible 5G interference have led pilots to scrutinize radio altimeter readings more closely, resulting in more anomaly reports that might previously have gone unnoticed. This raises key questions about whether an issue is truly caused by 5G signals or by a fault within the radio altimeter system itself. The most effective way to answer these questions is to ensure the radio altimeter is functioning properly through pre‑ and post‑flight system checks. Verifying correct system performance helps maintenance teams distinguish genuine 5G‑related interference from actual equipment faults.

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