In the event of an unsuccessful airstart, which action should be taken next?

In the event of an unsuccessful airstart, executing a forced landing or ejecting is the most appropriate course of action. This response is rooted in ensuring safety when faced with a potential loss of aircraft control or engine failure. If the first attempt to restart the engine fails, it suggests that there may be a more significant issue at play that could compromise the aircraft's operational effectiveness and the safety of those on board.

Attempting a second airstart could lead to further complications or delays, and it is not advised unless explicitly dictated by specific procedures and conditions that allow for it. Switching the power control lever (PCL) to idle or off may not be suitable either, as this could hinder the opportunity for a successful restart or could exacerbate the situation if immediate action is needed to ensure safety. Thus, executing a forced landing or ejection represents a decisive action aimed at mitigating risk and prioritizing the safety of the crew and aircraft.