What must each UAS operator maintain as per FAR regulations?

The requirement for each UAS operator to maintain a complete and accurate log of all flight operations aligns with regulations designed to ensure safety and accountability in unmanned aircraft system (UAS) operations. Keeping a detailed log assists operators in tracking flight times, maintenance schedules, and deviations from standard flight protocols, which can enhance safety and operational efficiency. This practice is vital for identifying trends or issues over time and is a best practice in aviation management, reflecting an operator's compliance with regulatory expectations.

Although registration is necessary for the UAS, the regulation emphasizes operational accountability, making the log of flight operations the primary focus. Other choices related to potential hazards or pilot qualifications, while important for overall safety management, are not explicitly mandated as record-keeping requirements by the FAR for UAS operators in the same way. Thus, maintaining a flight operations log is critical for ensuring compliance and operational integrity in UAS activities.