Which situation indicates that ADSPs are working as intended?

ADSPs, or Air Data Sensor Probes, play a crucial role in providing accurate air data to the aircraft's systems, which is essential for safe operation. When evaluating whether ADSPs are functioning correctly, it is important to consider scenarios that allow them to operate under normal conditions.

For the situation where the engine is off and aircraft is airborne, the ADSPs may not be receiving proper airflow, which could lead to inaccurate readings. Additionally, visible contamination on probes would obstruct the sensors, preventing them from delivering reliable data, thus indicating a malfunction or issue with the ADSPs.

Conversely, when the aircraft is airborne with one engine running, the ADSPs can still function properly as long as the probes are clear and the airflow is adequate. This scenario suggests that the air data is being collected accurately. Therefore, when evaluating different scenarios, having visible contamination (like ice or debris) on probes or airborne with one engine running shows conditions under which the probes may still signal normal operational function or slight degradation that needs attention.

In this case, both the presence of one engine running and the visual contamination recognition are significant indicators that there are aspects of the ADSPs that require monitoring and possibly address any faults, making the selection of multiple