In accordance with the Convention on International Civil Aviation all aircraft must be registered with a national aviation authority and they must carry proof of this registration in the form of a legal document called a Certificate of Registration at all times when in operation.
Sesuai Convention on International Civil Aviation semua pesawat terbang harus didaftarkan pada otoritas penerbangan sipil suatu negara dan harus membawa bukti registrasi dalam bentuk dokumen resmi bernama Certificate of Registration setiap saat beroperasi.