A system comprising: a plurality of UAS service supplier, USS, computing systems that each provide service to one of a plurality of service areas within an airspace, wherein each USS computing system is operable to: (a) receive, from unmanned aircraft system, UAS, operators, operation data for UASs operating in the service area served by the USS computing system, wherein the received operation data identifies data for each UAS with a unique UAS identifier assigned to the UAS; (b) receive, from the other USS computing systems for the airspace, operation data for UASs operating in the other service areas served by the other USS computing systems, wherein the operation data for the other service areas identifies data for each UAS with a unique UAS identifier assigned to the UAS; (c) combine (i) the operation data received from the UAS operators for the corresponding service area, with (ii) the operation data received from the other USS computing systems for the other service areas in the airspace, to maintain an airspace-wide UAS database that identifies operation data for each UAS comprising the unique UAS identifier assigned to the UAS, wherein each USS computing system maintains its own airspace-wide UAS database; (d) provide a publicly accessible application interface for obtaining airspace data based on the airspace-wide UAS database; and (e) provide, to the other USS computing systems, the operation data received from the UAS operators such that the operation data received from the UAS operators and the operation data received from the other USS computing systems are redundantly stored at both the airspace-wide database of the USS computing system and the airspace-wide databases of the other USS computing systems. (a) receive, from unmanned aircraft system, UAS, operators, operation data for UASs operating in the service area served by the USS computing system, wherein the received operation data identifies data for each UAS with a unique UAS identifier assigned to the UAS; (b) receive, from the other USS computing systems for the airspace, operation data for UASs operating in the other service areas served by the other USS computing systems, wherein the operation data for the other service areas identifies data for each UAS with a unique UAS identifier assigned to the UAS; (c) combine (i) the operation data received from the UAS operators for the corresponding service area, with (ii) the operation data received from the other USS computing systems for the other service areas in the airspace, to maintain an airspace-wide UAS database that identifies operation data for each UAS comprising the unique UAS identifier assigned to the UAS, wherein each USS computing system maintains its own airspace-wide UAS database; (d) provide a publicly accessible application interface for obtaining airspace data based on the airspace-wide UAS database; and (e) provide, to the other USS computing systems, the operation data received from the UAS operators such that the operation data received from the UAS operators and the operation data received from the other USS computing systems are redundantly stored at both the airspace-wide database of the USS computing system and the airspace-wide databases of the other USS computing systems.