When checking altitude during an inadvertent departure from controlled flight, what action should be confirmed?

In the context of checking altitude during an inadvertent departure from controlled flight, confirming "Altitude - CHECK" is crucial. This action emphasizes the need to assess the current altitude accurately and ensure that the aircraft is either in a safe altitude range or taking necessary corrective measures, based on the situation at hand.

When a pilot experiences an inadvertent departure from controlled flight—often characterized by uncommanded changes in altitude or direction—it's essential to first establish a clear picture of the aircraft's current altitude. This assessment allows the pilot to make informed decisions regarding the necessary recovery actions. By confirming the altitude, the pilot can determine if the aircraft is climbing, descending, or in level flight, which directly influences the next steps needed to regain controlled flight.

The focus on checking altitude serves to uphold safety protocols during critical situations, where misjudging altitude could lead to hazardous outcomes, such as a stall or loss of altitude awareness. Thus, this option fosters a systematic and cautious approach in high-stress scenarios, which is integral to maintaining operational safety in aviation.