Under 14 CFR § 89.305, which of the following is a required remote identification message element broadcast by a standard remote identification unmanned aircraft?

Why: 14 CFR § 89.305(b) lists the control station's latitude and longitude among the required message elements, alongside aircraft identity, control-station and aircraft altitude, aircraft latitude/longitude, velocity, a time mark, and emergency status.

• Section 89.305 lists eight message elements, and none of them is the remote pilot's certificate number; identity is conveyed through the aircraft's serial number or a session ID, not a pilot credential.
• Make and model are not among § 89.305's broadcast elements; that information instead appears on the producer's declaration of compliance and product label, not in the real-time broadcast.