An electric small UAS is showing a diminishing flight time capability compared to when it was new. According to AC 107-2A's maintenance and inspection best practices, what should the operator do?

Why: AC 107-2A's Appendix C best-practices table lists "diminishing flight time capability (electric powered propulsion systems)" as a condition requiring the operator to "further inspect to determine the integrity of the battery as a reliable power source," since diminishing capacity may indicate impending failure from exhausted service life or internal/external damage, with an electrical hazard posing a risk of fire or extreme heat.

• AC 107-2A treats diminishing flight time as a condition requiring further inspection, not a harmless and ignorable change — it may signal an impending battery failure and electrical hazard.
• The table attributes diminishing flight time to the battery's condition specifically, not the airframe, and calls for inspection and an assessment of needed repairs rather than automatic disposal of the whole aircraft.