An electric-powered small UA has shown a noticeable decrease in flight time over several flights, with no change in loading. Per AC 107-2A's Small UAS Condition Chart, what does this diminishing flight time capability most likely indicate?

Why: AC 107-2A's Table C-1, Small UAS Condition Chart, lists "Diminishing flight time capability (electric powered propulsion systems)" as a condition where the pilot should "further inspect to determine integrity of the battery as a reliable power source," since "diminishing battery capacity may indicate impending failure due to exhausted service life, internal, or external damage," posing a risk to aircraft performance and flight duration.

• Treats a documented warning sign as routine and expected, when the chart identifies diminishing flight time as a possible indicator of impending battery failure.
• Confuses battery degradation with the aircraft's maximum gross takeoff weight, which is a fixed structural limit set by the manufacturer and does not change based on battery condition.