What kind of maintenance documentation should an RPIC maintain?

The correct answer focuses on the importance of comprehensive maintenance records, which are essential for ensuring the airworthiness of the unmanned aircraft. Maintenance records must include critical information such as part numbers, details of any maintenance work done, and service history. This documentation serves multiple purposes: it helps in monitoring the health and performance of the aircraft, assures compliance with regulatory standards, and provides valuable information for troubleshooting and conducting future maintenance. By maintaining detailed records, the RPIC can ensure a higher level of operational safety and preparedness should any issues arise with the aircraft.

Meanwhile, the other options, while they might seem relevant, do not cover the full scope of what is required or useful from a maintenance perspective. For example, daily flight logs track flight operations but do not provide insights into the technical state of the aircraft. Similarly, while flight plans and weather logs are vital for safe operations, they are not directly related to documenting maintenance activities, which is critical for long-term aircraft reliability and safety. Only documenting repairs made by certified mechanics is too narrow, as it excludes other essential maintenance activities and checks that contribute to overall aircraft upkeep.