Re-registration after unacceptable modification

In plain language

If you make a major (unacceptable) modification to your registered drone, you must not fly it until you have registered the drone again in its newly modified form.

Requirement as structured

A registered RPA that undergoes an unacceptable modification must not be operated unless it is registered again in its modified form.

Original regulatory text

If, after it has been registered, an unmanned aircraft to which this section applies is the subject of an unacceptable modification, the aircraft, as modified, must not be operated unless it is registered again in its modified form.