Final answer:
Aircraft must be re-registered periodically, not just when ownership changes, per regulations from authorities like the FAA, typically every three years in the U.S.
Step-by-step explanation:
The statement that aircraft only need to be re-registered when ownership changes is false. According to regulations set by aviation authorities such as the Federal Aviation Administration (FAA) in the United States, aircraft are required to be periodically re-registered, regardless of whether the ownership has changed. The interval at which aircraft must be re-registered can vary; for example, in the U.S., it is required every three years. This process is important for maintaining up-to-date records of all aircraft and ensuring that all safety and regulatory requirements are being met.