What is the recommended initial action to recover from a compressor stall?

The recommended initial action to recover from a compressor stall is to reduce the thrust lever and then slowly advance it again. This action helps to alleviate the conditions that caused the stall by decreasing the airflow demand on the engine. When a compressor stall occurs, it is often due to an imbalance in airflow or a disruption in the engine's normal operational parameters. By reducing thrust, the engine can stabilize before the thrust demands are gradually increased again, allowing the engine to recover from the stall effectively.

This method is based on maintaining control of the engine's performance and mitigating the risk of further deterioration. An abrupt increase in thrust or giving full power could exacerbate the stall condition, as it can lead to more significant airflow issues within the compressor. Additionally, trimming the aircraft for level flight does not address the underlying issue with the engine and would not provide the immediate corrective action needed for engine recovery.