When must the station licensee make the station and the station records available for inspection?

The FCC rules strictly require that amateur radio operators make their station and any required station records available for inspection whenever requested by an authorized FCC representative. This compliance is a fundamental condition of holding an amateur radio license. Distractors suggesting a 10-day notice, written notification, or a valid warrant are incorrect. Agreeing to prompt, on-demand administrative inspections is part of the regulatory framework you accept when you are granted a federal license.