UA.I.F.K6: Minimum message elements broadcast for remote identification.

ACS Area I — Regulations Task F: Remote Identification (RIDRemote IdentificationCloseRemote ID broadcast requirements for most drones operating in U.S. airspace.) References: 14 CFRCode of Federal RegulationsCloseThe federal rulebook where Part 107, Part 89, Part 48, and other aviation rules live. part 89; ACAdvisory CircularCloseFAA guidance that explains acceptable ways to comply with rules or understand FAA procedures. 107-2; FAAFederal Aviation AdministrationCloseThe U.S. aviation regulator responsible for Part 107 rules, airspace, and pilot certification processes.-H-8083-25; FAAFederal Aviation AdministrationCloseThe U.S. aviation regulator responsible for Part 107 rules, airspace, and pilot certification processes.-G-8082-22

Key Concepts

Overview of Remote Identification Broadcast Requirements

Remote Identification (RIDRemote IdentificationCloseRemote ID broadcast requirements for most drones operating in U.S. airspace.) is now a foundational requirement for operation of most small unmanned aircraft systems (sUASSmall Unmanned Aircraft SystemCloseA small drone plus the control and communication links used to operate it.) within the National Airspace System (NASNational Airspace SystemCloseThe shared U.S. airspace system that drones must operate within.). Remote IDRemote IdentificationCloseRemote ID broadcast requirements for most drones operating in U.S. airspace. ensures that drones can be digitally identified in real time, providing both security and situational awareness to authorities and other airspace users. After September 16, 2023, most registered drones, or those required to be registered, must comply with these regulations^[3].

Part 107 pilots must understand the minimum RIDRemote IdentificationCloseRemote ID broadcast requirements for most drones operating in U.S. airspace. message elements required for compliance. There are two main compliance pathways: using a standard remote identification unmanned aircraft or equipping a non-standard aircraft with a remote identification broadcast module. The message elements broadcast by each type differ, and it is critical for remote pilots to recognize and verify that their system meets these minimum requirements^[6].

Minimum Message Elements for Standard Remote Identification UAS

A standard remote identification UASUnmanned Aircraft SystemCloseAn unmanned aircraft plus its control station, communication links, and supporting components. broadcasts a comprehensive set of message elements directly from the aircraft. These include:

• Identity of the Unmanned Aircraft: This can be either a unique serial number (assigned by the manufacturer and listed on the Certificate of Aircraft Registration) or a session ID. This identity enables traceability if authorities need to contact the operator^[2].
• Control Station Location: The latitude, longitude, and geometric altitude of the control station, allowing authorities to locate the person manipulating the flight controls in real time^[2].
• Aircraft Position and Altitude: The latitude, longitude, and geometric altitude of the unmanned aircraft itself are broadcast to allow tracking of its real-time position and vertical placement in the airspace^[2].
• Velocity: The speed and direction at which the unmanned aircraft is traveling, which helps with airspace deconfliction and tracking moving aircraft^[2].
• Time Mark (UTC): The timestamp matching Coordinated Universal Time when the data was recorded, synchronizing all position reports^[2].
• Emergency Status: The aircraft’s emergency condition, if applicable, is also broadcast. This can assist in responding to lost-link or in-flight emergencies^[2].

For a drone pilot, this means the UASUnmanned Aircraft SystemCloseAn unmanned aircraft plus its control station, communication links, and supporting components. must be equipped and configured so all these data points are actively broadcast during flight. Failure to broadcast any required element is a regulatory violation.

Minimum Message Elements for Remote ID Broadcast Modules

If the UASUnmanned Aircraft SystemCloseAn unmanned aircraft plus its control station, communication links, and supporting components. is not equipped with standard remote ID capabilities, a remote identification broadcast module can be attached. The minimum message set for broadcast modules is more limited but still critical for compliance. The required elements are:

• Module Serial Number: The serial number assigned to the broadcast module (not the aircraft itself), which must also be listed on the aircraft’s Certificate of Aircraft Registration^[1][3][6].
• Aircraft Latitude and Longitude: The position of the aircraft at any time during flight^[1].
• Aircraft Geometric Altitude: The vertical position of the aircraft^[1].
• Aircraft Velocity: The speed and heading of the aircraft^[1].
• Takeoff Location (latitude, longitude, geometric altitude): The precise home point used at takeoff, enabling authorities to determine the launch site even after the aircraft departs^[1].
• Time Mark (UTC): The synchronized timestamp for all data elements^[1].

Unlike standard RIDRemote IdentificationCloseRemote ID broadcast requirements for most drones operating in U.S. airspace., modules do not broadcast the location of the control station or emergency status. The operator must ensure the module is functioning before takeoff and throughout flight—and visual line of sight must be maintained at all times^[6].

Registration and Compliance Considerations

Proper record-keeping is critical: the serial number of either the standard remote identification aircraft or the broadcast module must be listed on only one Certificate of Aircraft Registration at a time. If a broadcast module is moved between aircraft, its serial number must be updated on the respective certificate before operation^[3]. Modules must be FAAFederal Aviation AdministrationCloseThe U.S. aviation regulator responsible for Part 107 rules, airspace, and pilot certification processes.-accepted, comply with performance requirements, and must continuously monitor and report malfunctions to the operator. This ensures that the broadcast data remains trustworthy and that authorities can confidently use RIDRemote IdentificationCloseRemote ID broadcast requirements for most drones operating in U.S. airspace. data for airspace safety and enforcement^[1][2].

remote pilots must know exactly which message elements are required for their equipment type, verify these are being broadcast every flight, and maintain compliance in their records—an essential competence for passing the Part 107 exam and for lawful operation in the NASNational Airspace SystemCloseThe shared U.S. airspace system that drones must operate within..