Answer :
Small unmanned aircraft's serial number are to be listed on The Certificate of Aircraft Registration when using either standard remote identification or a broadcast module.
A unique alphanumeric string number to identify the aircraft, which also shows the user the nationality means the country of registration of the aircraft, and also provides a legal document for the aircraft issues by the NAA( National Aircraft Authority) is called a Certificate of Registration.
It is one of the documents which is compulsary to be carried when the aircraft is in operation or when the pilot is using the aircraft.
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