Section 47.14 - Serial numbers for unmanned aircraft(a) The unmanned aircraft serial number provided as part of any application for aircraft registration of any standard remote identification unmanned aircraft must be the serial number issued by the manufacturer of the unmanned aircraft in accordance with the design and production requirements of part 89 of this chapter. The serial number provided in this application must not be listed on more than one Certificate of Aircraft Registration at the same time.(b) The unmanned aircraft serial number provided as part of any application for registration of any unmanned aircraft with a remote identification broadcast module must be the serial number issued by the manufacturer of the remote identification broadcast module in accordance with the design and production requirements of part 89 of this chapter. The serial number provided in this application must not be listed on more than one Certificate of Aircraft Registration at the same time.Docket No. FAA-2019-1100, Amdt. 47-31, 86 FR 4503 , Jan. 15, 2021